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[Emacs-diffs] Changes to emacs/src/data.c [gnus-5_10-branch]
From: |
Miles Bader |
Subject: |
[Emacs-diffs] Changes to emacs/src/data.c [gnus-5_10-branch] |
Date: |
Sat, 04 Sep 2004 08:14:10 -0400 |
Index: emacs/src/data.c
diff -c /dev/null emacs/src/data.c:1.241.2.1
*** /dev/null Sat Sep 4 12:03:23 2004
--- emacs/src/data.c Sat Sep 4 12:01:17 2004
***************
*** 0 ****
--- 1,3384 ----
+ /* Primitive operations on Lisp data types for GNU Emacs Lisp interpreter.
+ Copyright (C) 1985,86,88,93,94,95,97,98,99, 2000, 2001, 03, 2004
+ Free Software Foundation, Inc.
+
+ This file is part of GNU Emacs.
+
+ GNU Emacs is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2, or (at your option)
+ any later version.
+
+ GNU Emacs is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with GNU Emacs; see the file COPYING. If not, write to
+ the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA. */
+
+
+ #include <config.h>
+ #include <signal.h>
+ #include <stdio.h>
+ #include "lisp.h"
+ #include "puresize.h"
+ #include "charset.h"
+ #include "buffer.h"
+ #include "keyboard.h"
+ #include "frame.h"
+ #include "syssignal.h"
+
+ #ifdef STDC_HEADERS
+ #include <float.h>
+ #endif
+
+ /* If IEEE_FLOATING_POINT isn't defined, default it from FLT_*. */
+ #ifndef IEEE_FLOATING_POINT
+ #if (FLT_RADIX == 2 && FLT_MANT_DIG == 24 \
+ && FLT_MIN_EXP == -125 && FLT_MAX_EXP == 128)
+ #define IEEE_FLOATING_POINT 1
+ #else
+ #define IEEE_FLOATING_POINT 0
+ #endif
+ #endif
+
+ /* Work around a problem that happens because math.h on hpux 7
+ defines two static variables--which, in Emacs, are not really static,
+ because `static' is defined as nothing. The problem is that they are
+ here, in floatfns.c, and in lread.c.
+ These macros prevent the name conflict. */
+ #if defined (HPUX) && !defined (HPUX8)
+ #define _MAXLDBL data_c_maxldbl
+ #define _NMAXLDBL data_c_nmaxldbl
+ #endif
+
+ #include <math.h>
+
+ #if !defined (atof)
+ extern double atof ();
+ #endif /* !atof */
+
+ Lisp_Object Qnil, Qt, Qquote, Qlambda, Qsubr, Qunbound;
+ Lisp_Object Qerror_conditions, Qerror_message, Qtop_level;
+ Lisp_Object Qerror, Qquit, Qwrong_type_argument, Qargs_out_of_range;
+ Lisp_Object Qvoid_variable, Qvoid_function, Qcyclic_function_indirection;
+ Lisp_Object Qcyclic_variable_indirection, Qcircular_list;
+ Lisp_Object Qsetting_constant, Qinvalid_read_syntax;
+ Lisp_Object Qinvalid_function, Qwrong_number_of_arguments, Qno_catch;
+ Lisp_Object Qend_of_file, Qarith_error, Qmark_inactive;
+ Lisp_Object Qbeginning_of_buffer, Qend_of_buffer, Qbuffer_read_only;
+ Lisp_Object Qtext_read_only;
+
+ Lisp_Object Qintegerp, Qnatnump, Qwholenump, Qsymbolp, Qlistp, Qconsp;
+ Lisp_Object Qstringp, Qarrayp, Qsequencep, Qbufferp;
+ Lisp_Object Qchar_or_string_p, Qmarkerp, Qinteger_or_marker_p, Qvectorp;
+ Lisp_Object Qbuffer_or_string_p, Qkeywordp;
+ Lisp_Object Qboundp, Qfboundp;
+ Lisp_Object Qchar_table_p, Qvector_or_char_table_p;
+
+ Lisp_Object Qcdr;
+ Lisp_Object Qad_advice_info, Qad_activate_internal;
+
+ Lisp_Object Qrange_error, Qdomain_error, Qsingularity_error;
+ Lisp_Object Qoverflow_error, Qunderflow_error;
+
+ Lisp_Object Qfloatp;
+ Lisp_Object Qnumberp, Qnumber_or_marker_p;
+
+ Lisp_Object Qinteger;
+ static Lisp_Object Qsymbol, Qstring, Qcons, Qmarker, Qoverlay;
+ static Lisp_Object Qfloat, Qwindow_configuration, Qwindow;
+ Lisp_Object Qprocess;
+ static Lisp_Object Qcompiled_function, Qbuffer, Qframe, Qvector;
+ static Lisp_Object Qchar_table, Qbool_vector, Qhash_table;
+ static Lisp_Object Qsubrp, Qmany, Qunevalled;
+
+ static Lisp_Object swap_in_symval_forwarding P_ ((Lisp_Object, Lisp_Object));
+
+ Lisp_Object Vmost_positive_fixnum, Vmost_negative_fixnum;
+
+
+ void
+ circular_list_error (list)
+ Lisp_Object list;
+ {
+ Fsignal (Qcircular_list, list);
+ }
+
+
+ Lisp_Object
+ wrong_type_argument (predicate, value)
+ register Lisp_Object predicate, value;
+ {
+ register Lisp_Object tem;
+ do
+ {
+ /* If VALUE is not even a valid Lisp object, abort here
+ where we can get a backtrace showing where it came from. */
+ if ((unsigned int) XGCTYPE (value) >= Lisp_Type_Limit)
+ abort ();
+
+ value = Fsignal (Qwrong_type_argument, Fcons (predicate, Fcons (value,
Qnil)));
+ tem = call1 (predicate, value);
+ }
+ while (NILP (tem));
+ return value;
+ }
+
+ void
+ pure_write_error ()
+ {
+ error ("Attempt to modify read-only object");
+ }
+
+ void
+ args_out_of_range (a1, a2)
+ Lisp_Object a1, a2;
+ {
+ while (1)
+ Fsignal (Qargs_out_of_range, Fcons (a1, Fcons (a2, Qnil)));
+ }
+
+ void
+ args_out_of_range_3 (a1, a2, a3)
+ Lisp_Object a1, a2, a3;
+ {
+ while (1)
+ Fsignal (Qargs_out_of_range, Fcons (a1, Fcons (a2, Fcons (a3, Qnil))));
+ }
+
+ /* On some machines, XINT needs a temporary location.
+ Here it is, in case it is needed. */
+
+ int sign_extend_temp;
+
+ /* On a few machines, XINT can only be done by calling this. */
+
+ int
+ sign_extend_lisp_int (num)
+ EMACS_INT num;
+ {
+ if (num & (((EMACS_INT) 1) << (VALBITS - 1)))
+ return num | (((EMACS_INT) (-1)) << VALBITS);
+ else
+ return num & ((((EMACS_INT) 1) << VALBITS) - 1);
+ }
+
+ /* Data type predicates */
+
+ DEFUN ("eq", Feq, Seq, 2, 2, 0,
+ doc: /* Return t if the two args are the same Lisp object. */)
+ (obj1, obj2)
+ Lisp_Object obj1, obj2;
+ {
+ if (EQ (obj1, obj2))
+ return Qt;
+ return Qnil;
+ }
+
+ DEFUN ("null", Fnull, Snull, 1, 1, 0,
+ doc: /* Return t if OBJECT is nil. */)
+ (object)
+ Lisp_Object object;
+ {
+ if (NILP (object))
+ return Qt;
+ return Qnil;
+ }
+
+ DEFUN ("type-of", Ftype_of, Stype_of, 1, 1, 0,
+ doc: /* Return a symbol representing the type of OBJECT.
+ The symbol returned names the object's basic type;
+ for example, (type-of 1) returns `integer'. */)
+ (object)
+ Lisp_Object object;
+ {
+ switch (XGCTYPE (object))
+ {
+ case Lisp_Int:
+ return Qinteger;
+
+ case Lisp_Symbol:
+ return Qsymbol;
+
+ case Lisp_String:
+ return Qstring;
+
+ case Lisp_Cons:
+ return Qcons;
+
+ case Lisp_Misc:
+ switch (XMISCTYPE (object))
+ {
+ case Lisp_Misc_Marker:
+ return Qmarker;
+ case Lisp_Misc_Overlay:
+ return Qoverlay;
+ case Lisp_Misc_Float:
+ return Qfloat;
+ }
+ abort ();
+
+ case Lisp_Vectorlike:
+ if (GC_WINDOW_CONFIGURATIONP (object))
+ return Qwindow_configuration;
+ if (GC_PROCESSP (object))
+ return Qprocess;
+ if (GC_WINDOWP (object))
+ return Qwindow;
+ if (GC_SUBRP (object))
+ return Qsubr;
+ if (GC_COMPILEDP (object))
+ return Qcompiled_function;
+ if (GC_BUFFERP (object))
+ return Qbuffer;
+ if (GC_CHAR_TABLE_P (object))
+ return Qchar_table;
+ if (GC_BOOL_VECTOR_P (object))
+ return Qbool_vector;
+ if (GC_FRAMEP (object))
+ return Qframe;
+ if (GC_HASH_TABLE_P (object))
+ return Qhash_table;
+ return Qvector;
+
+ case Lisp_Float:
+ return Qfloat;
+
+ default:
+ abort ();
+ }
+ }
+
+ DEFUN ("consp", Fconsp, Sconsp, 1, 1, 0,
+ doc: /* Return t if OBJECT is a cons cell. */)
+ (object)
+ Lisp_Object object;
+ {
+ if (CONSP (object))
+ return Qt;
+ return Qnil;
+ }
+
+ DEFUN ("atom", Fatom, Satom, 1, 1, 0,
+ doc: /* Return t if OBJECT is not a cons cell. This includes nil. */)
+ (object)
+ Lisp_Object object;
+ {
+ if (CONSP (object))
+ return Qnil;
+ return Qt;
+ }
+
+ DEFUN ("listp", Flistp, Slistp, 1, 1, 0,
+ doc: /* Return t if OBJECT is a list. This includes nil. */)
+ (object)
+ Lisp_Object object;
+ {
+ if (CONSP (object) || NILP (object))
+ return Qt;
+ return Qnil;
+ }
+
+ DEFUN ("nlistp", Fnlistp, Snlistp, 1, 1, 0,
+ doc: /* Return t if OBJECT is not a list. Lists include nil. */)
+ (object)
+ Lisp_Object object;
+ {
+ if (CONSP (object) || NILP (object))
+ return Qnil;
+ return Qt;
+ }
+
+ DEFUN ("symbolp", Fsymbolp, Ssymbolp, 1, 1, 0,
+ doc: /* Return t if OBJECT is a symbol. */)
+ (object)
+ Lisp_Object object;
+ {
+ if (SYMBOLP (object))
+ return Qt;
+ return Qnil;
+ }
+
+ /* Define this in C to avoid unnecessarily consing up the symbol
+ name. */
+ DEFUN ("keywordp", Fkeywordp, Skeywordp, 1, 1, 0,
+ doc: /* Return t if OBJECT is a keyword.
+ This means that it is a symbol with a print name beginning with `:'
+ interned in the initial obarray. */)
+ (object)
+ Lisp_Object object;
+ {
+ if (SYMBOLP (object)
+ && SREF (SYMBOL_NAME (object), 0) == ':'
+ && SYMBOL_INTERNED_IN_INITIAL_OBARRAY_P (object))
+ return Qt;
+ return Qnil;
+ }
+
+ DEFUN ("vectorp", Fvectorp, Svectorp, 1, 1, 0,
+ doc: /* Return t if OBJECT is a vector. */)
+ (object)
+ Lisp_Object object;
+ {
+ if (VECTORP (object))
+ return Qt;
+ return Qnil;
+ }
+
+ DEFUN ("stringp", Fstringp, Sstringp, 1, 1, 0,
+ doc: /* Return t if OBJECT is a string. */)
+ (object)
+ Lisp_Object object;
+ {
+ if (STRINGP (object))
+ return Qt;
+ return Qnil;
+ }
+
+ DEFUN ("multibyte-string-p", Fmultibyte_string_p, Smultibyte_string_p,
+ 1, 1, 0,
+ doc: /* Return t if OBJECT is a multibyte string. */)
+ (object)
+ Lisp_Object object;
+ {
+ if (STRINGP (object) && STRING_MULTIBYTE (object))
+ return Qt;
+ return Qnil;
+ }
+
+ DEFUN ("char-table-p", Fchar_table_p, Schar_table_p, 1, 1, 0,
+ doc: /* Return t if OBJECT is a char-table. */)
+ (object)
+ Lisp_Object object;
+ {
+ if (CHAR_TABLE_P (object))
+ return Qt;
+ return Qnil;
+ }
+
+ DEFUN ("vector-or-char-table-p", Fvector_or_char_table_p,
+ Svector_or_char_table_p, 1, 1, 0,
+ doc: /* Return t if OBJECT is a char-table or vector. */)
+ (object)
+ Lisp_Object object;
+ {
+ if (VECTORP (object) || CHAR_TABLE_P (object))
+ return Qt;
+ return Qnil;
+ }
+
+ DEFUN ("bool-vector-p", Fbool_vector_p, Sbool_vector_p, 1, 1, 0,
+ doc: /* Return t if OBJECT is a bool-vector. */)
+ (object)
+ Lisp_Object object;
+ {
+ if (BOOL_VECTOR_P (object))
+ return Qt;
+ return Qnil;
+ }
+
+ DEFUN ("arrayp", Farrayp, Sarrayp, 1, 1, 0,
+ doc: /* Return t if OBJECT is an array (string or vector). */)
+ (object)
+ Lisp_Object object;
+ {
+ if (VECTORP (object) || STRINGP (object)
+ || CHAR_TABLE_P (object) || BOOL_VECTOR_P (object))
+ return Qt;
+ return Qnil;
+ }
+
+ DEFUN ("sequencep", Fsequencep, Ssequencep, 1, 1, 0,
+ doc: /* Return t if OBJECT is a sequence (list or array). */)
+ (object)
+ register Lisp_Object object;
+ {
+ if (CONSP (object) || NILP (object) || VECTORP (object) || STRINGP (object)
+ || CHAR_TABLE_P (object) || BOOL_VECTOR_P (object))
+ return Qt;
+ return Qnil;
+ }
+
+ DEFUN ("bufferp", Fbufferp, Sbufferp, 1, 1, 0,
+ doc: /* Return t if OBJECT is an editor buffer. */)
+ (object)
+ Lisp_Object object;
+ {
+ if (BUFFERP (object))
+ return Qt;
+ return Qnil;
+ }
+
+ DEFUN ("markerp", Fmarkerp, Smarkerp, 1, 1, 0,
+ doc: /* Return t if OBJECT is a marker (editor pointer). */)
+ (object)
+ Lisp_Object object;
+ {
+ if (MARKERP (object))
+ return Qt;
+ return Qnil;
+ }
+
+ DEFUN ("subrp", Fsubrp, Ssubrp, 1, 1, 0,
+ doc: /* Return t if OBJECT is a built-in function. */)
+ (object)
+ Lisp_Object object;
+ {
+ if (SUBRP (object))
+ return Qt;
+ return Qnil;
+ }
+
+ DEFUN ("byte-code-function-p", Fbyte_code_function_p, Sbyte_code_function_p,
+ 1, 1, 0,
+ doc: /* Return t if OBJECT is a byte-compiled function object. */)
+ (object)
+ Lisp_Object object;
+ {
+ if (COMPILEDP (object))
+ return Qt;
+ return Qnil;
+ }
+
+ DEFUN ("char-or-string-p", Fchar_or_string_p, Schar_or_string_p, 1, 1, 0,
+ doc: /* Return t if OBJECT is a character (an integer) or a string.
*/)
+ (object)
+ register Lisp_Object object;
+ {
+ if (INTEGERP (object) || STRINGP (object))
+ return Qt;
+ return Qnil;
+ }
+
+ DEFUN ("integerp", Fintegerp, Sintegerp, 1, 1, 0,
+ doc: /* Return t if OBJECT is an integer. */)
+ (object)
+ Lisp_Object object;
+ {
+ if (INTEGERP (object))
+ return Qt;
+ return Qnil;
+ }
+
+ DEFUN ("integer-or-marker-p", Finteger_or_marker_p, Sinteger_or_marker_p, 1,
1, 0,
+ doc: /* Return t if OBJECT is an integer or a marker (editor pointer).
*/)
+ (object)
+ register Lisp_Object object;
+ {
+ if (MARKERP (object) || INTEGERP (object))
+ return Qt;
+ return Qnil;
+ }
+
+ DEFUN ("natnump", Fnatnump, Snatnump, 1, 1, 0,
+ doc: /* Return t if OBJECT is a nonnegative integer. */)
+ (object)
+ Lisp_Object object;
+ {
+ if (NATNUMP (object))
+ return Qt;
+ return Qnil;
+ }
+
+ DEFUN ("numberp", Fnumberp, Snumberp, 1, 1, 0,
+ doc: /* Return t if OBJECT is a number (floating point or integer).
*/)
+ (object)
+ Lisp_Object object;
+ {
+ if (NUMBERP (object))
+ return Qt;
+ else
+ return Qnil;
+ }
+
+ DEFUN ("number-or-marker-p", Fnumber_or_marker_p,
+ Snumber_or_marker_p, 1, 1, 0,
+ doc: /* Return t if OBJECT is a number or a marker. */)
+ (object)
+ Lisp_Object object;
+ {
+ if (NUMBERP (object) || MARKERP (object))
+ return Qt;
+ return Qnil;
+ }
+
+ DEFUN ("floatp", Ffloatp, Sfloatp, 1, 1, 0,
+ doc: /* Return t if OBJECT is a floating point number. */)
+ (object)
+ Lisp_Object object;
+ {
+ if (FLOATP (object))
+ return Qt;
+ return Qnil;
+ }
+
+
+ /* Extract and set components of lists */
+
+ DEFUN ("car", Fcar, Scar, 1, 1, 0,
+ doc: /* Return the car of LIST. If arg is nil, return nil.
+ Error if arg is not nil and not a cons cell. See also `car-safe'. */)
+ (list)
+ register Lisp_Object list;
+ {
+ while (1)
+ {
+ if (CONSP (list))
+ return XCAR (list);
+ else if (EQ (list, Qnil))
+ return Qnil;
+ else
+ list = wrong_type_argument (Qlistp, list);
+ }
+ }
+
+ DEFUN ("car-safe", Fcar_safe, Scar_safe, 1, 1, 0,
+ doc: /* Return the car of OBJECT if it is a cons cell, or else nil.
*/)
+ (object)
+ Lisp_Object object;
+ {
+ if (CONSP (object))
+ return XCAR (object);
+ else
+ return Qnil;
+ }
+
+ DEFUN ("cdr", Fcdr, Scdr, 1, 1, 0,
+ doc: /* Return the cdr of LIST. If arg is nil, return nil.
+ Error if arg is not nil and not a cons cell. See also `cdr-safe'. */)
+ (list)
+ register Lisp_Object list;
+ {
+ while (1)
+ {
+ if (CONSP (list))
+ return XCDR (list);
+ else if (EQ (list, Qnil))
+ return Qnil;
+ else
+ list = wrong_type_argument (Qlistp, list);
+ }
+ }
+
+ DEFUN ("cdr-safe", Fcdr_safe, Scdr_safe, 1, 1, 0,
+ doc: /* Return the cdr of OBJECT if it is a cons cell, or else nil.
*/)
+ (object)
+ Lisp_Object object;
+ {
+ if (CONSP (object))
+ return XCDR (object);
+ else
+ return Qnil;
+ }
+
+ DEFUN ("setcar", Fsetcar, Ssetcar, 2, 2, 0,
+ doc: /* Set the car of CELL to be NEWCAR. Returns NEWCAR. */)
+ (cell, newcar)
+ register Lisp_Object cell, newcar;
+ {
+ if (!CONSP (cell))
+ cell = wrong_type_argument (Qconsp, cell);
+
+ CHECK_IMPURE (cell);
+ XSETCAR (cell, newcar);
+ return newcar;
+ }
+
+ DEFUN ("setcdr", Fsetcdr, Ssetcdr, 2, 2, 0,
+ doc: /* Set the cdr of CELL to be NEWCDR. Returns NEWCDR. */)
+ (cell, newcdr)
+ register Lisp_Object cell, newcdr;
+ {
+ if (!CONSP (cell))
+ cell = wrong_type_argument (Qconsp, cell);
+
+ CHECK_IMPURE (cell);
+ XSETCDR (cell, newcdr);
+ return newcdr;
+ }
+
+ /* Extract and set components of symbols */
+
+ DEFUN ("boundp", Fboundp, Sboundp, 1, 1, 0,
+ doc: /* Return t if SYMBOL's value is not void. */)
+ (symbol)
+ register Lisp_Object symbol;
+ {
+ Lisp_Object valcontents;
+ CHECK_SYMBOL (symbol);
+
+ valcontents = SYMBOL_VALUE (symbol);
+
+ if (BUFFER_LOCAL_VALUEP (valcontents)
+ || SOME_BUFFER_LOCAL_VALUEP (valcontents))
+ valcontents = swap_in_symval_forwarding (symbol, valcontents);
+
+ return (EQ (valcontents, Qunbound) ? Qnil : Qt);
+ }
+
+ DEFUN ("fboundp", Ffboundp, Sfboundp, 1, 1, 0,
+ doc: /* Return t if SYMBOL's function definition is not void. */)
+ (symbol)
+ register Lisp_Object symbol;
+ {
+ CHECK_SYMBOL (symbol);
+ return (EQ (XSYMBOL (symbol)->function, Qunbound) ? Qnil : Qt);
+ }
+
+ DEFUN ("makunbound", Fmakunbound, Smakunbound, 1, 1, 0,
+ doc: /* Make SYMBOL's value be void.
+ Return SYMBOL. */)
+ (symbol)
+ register Lisp_Object symbol;
+ {
+ CHECK_SYMBOL (symbol);
+ if (XSYMBOL (symbol)->constant)
+ return Fsignal (Qsetting_constant, Fcons (symbol, Qnil));
+ Fset (symbol, Qunbound);
+ return symbol;
+ }
+
+ DEFUN ("fmakunbound", Ffmakunbound, Sfmakunbound, 1, 1, 0,
+ doc: /* Make SYMBOL's function definition be void.
+ Return SYMBOL. */)
+ (symbol)
+ register Lisp_Object symbol;
+ {
+ CHECK_SYMBOL (symbol);
+ if (NILP (symbol) || EQ (symbol, Qt))
+ return Fsignal (Qsetting_constant, Fcons (symbol, Qnil));
+ XSYMBOL (symbol)->function = Qunbound;
+ return symbol;
+ }
+
+ DEFUN ("symbol-function", Fsymbol_function, Ssymbol_function, 1, 1, 0,
+ doc: /* Return SYMBOL's function definition. Error if that is void.
*/)
+ (symbol)
+ register Lisp_Object symbol;
+ {
+ CHECK_SYMBOL (symbol);
+ if (EQ (XSYMBOL (symbol)->function, Qunbound))
+ return Fsignal (Qvoid_function, Fcons (symbol, Qnil));
+ return XSYMBOL (symbol)->function;
+ }
+
+ DEFUN ("symbol-plist", Fsymbol_plist, Ssymbol_plist, 1, 1, 0,
+ doc: /* Return SYMBOL's property list. */)
+ (symbol)
+ register Lisp_Object symbol;
+ {
+ CHECK_SYMBOL (symbol);
+ return XSYMBOL (symbol)->plist;
+ }
+
+ DEFUN ("symbol-name", Fsymbol_name, Ssymbol_name, 1, 1, 0,
+ doc: /* Return SYMBOL's name, a string. */)
+ (symbol)
+ register Lisp_Object symbol;
+ {
+ register Lisp_Object name;
+
+ CHECK_SYMBOL (symbol);
+ name = SYMBOL_NAME (symbol);
+ return name;
+ }
+
+ DEFUN ("fset", Ffset, Sfset, 2, 2, 0,
+ doc: /* Set SYMBOL's function definition to DEFINITION, and return
DEFINITION. */)
+ (symbol, definition)
+ register Lisp_Object symbol, definition;
+ {
+ CHECK_SYMBOL (symbol);
+ if (NILP (symbol) || EQ (symbol, Qt))
+ return Fsignal (Qsetting_constant, Fcons (symbol, Qnil));
+ if (!NILP (Vautoload_queue) && !EQ (XSYMBOL (symbol)->function, Qunbound))
+ Vautoload_queue = Fcons (Fcons (symbol, XSYMBOL (symbol)->function),
+ Vautoload_queue);
+ XSYMBOL (symbol)->function = definition;
+ /* Handle automatic advice activation */
+ if (CONSP (XSYMBOL (symbol)->plist) && !NILP (Fget (symbol,
Qad_advice_info)))
+ {
+ call2 (Qad_activate_internal, symbol, Qnil);
+ definition = XSYMBOL (symbol)->function;
+ }
+ return definition;
+ }
+
+ extern Lisp_Object Qfunction_documentation;
+
+ DEFUN ("defalias", Fdefalias, Sdefalias, 2, 3, 0,
+ doc: /* Set SYMBOL's function definition to DEFINITION, and return
DEFINITION.
+ Associates the function with the current load file, if any.
+ The optional third argument DOCSTRING specifies the documentation string
+ for SYMBOL; if it is omitted or nil, SYMBOL uses the documentation string
+ determined by DEFINITION. */)
+ (symbol, definition, docstring)
+ register Lisp_Object symbol, definition, docstring;
+ {
+ if (CONSP (XSYMBOL (symbol)->function)
+ && EQ (XCAR (XSYMBOL (symbol)->function), Qautoload))
+ LOADHIST_ATTACH (Fcons (Qt, symbol));
+ definition = Ffset (symbol, definition);
+ LOADHIST_ATTACH (symbol);
+ if (!NILP (docstring))
+ Fput (symbol, Qfunction_documentation, docstring);
+ return definition;
+ }
+
+ DEFUN ("setplist", Fsetplist, Ssetplist, 2, 2, 0,
+ doc: /* Set SYMBOL's property list to NEWPLIST, and return NEWPLIST.
*/)
+ (symbol, newplist)
+ register Lisp_Object symbol, newplist;
+ {
+ CHECK_SYMBOL (symbol);
+ XSYMBOL (symbol)->plist = newplist;
+ return newplist;
+ }
+
+ DEFUN ("subr-arity", Fsubr_arity, Ssubr_arity, 1, 1, 0,
+ doc: /* Return minimum and maximum number of args allowed for SUBR.
+ SUBR must be a built-in function.
+ The returned value is a pair (MIN . MAX). MIN is the minimum number
+ of args. MAX is the maximum number or the symbol `many', for a
+ function with `&rest' args, or `unevalled' for a special form. */)
+ (subr)
+ Lisp_Object subr;
+ {
+ short minargs, maxargs;
+ if (!SUBRP (subr))
+ wrong_type_argument (Qsubrp, subr);
+ minargs = XSUBR (subr)->min_args;
+ maxargs = XSUBR (subr)->max_args;
+ if (maxargs == MANY)
+ return Fcons (make_number (minargs), Qmany);
+ else if (maxargs == UNEVALLED)
+ return Fcons (make_number (minargs), Qunevalled);
+ else
+ return Fcons (make_number (minargs), make_number (maxargs));
+ }
+
+ DEFUN ("subr-name", Fsubr_name, Ssubr_name, 1, 1, 0,
+ doc: /* Return name of subroutine SUBR.
+ SUBR must be a built-in function. */)
+ (subr)
+ Lisp_Object subr;
+ {
+ const char *name;
+ if (!SUBRP (subr))
+ wrong_type_argument (Qsubrp, subr);
+ name = XSUBR (subr)->symbol_name;
+ return make_string (name, strlen (name));
+ }
+
+ DEFUN ("interactive-form", Finteractive_form, Sinteractive_form, 1, 1, 0,
+ doc: /* Return the interactive form of CMD or nil if none.
+ If CMD is not a command, the return value is nil.
+ Value, if non-nil, is a list \(interactive SPEC). */)
+ (cmd)
+ Lisp_Object cmd;
+ {
+ Lisp_Object fun = indirect_function (cmd);
+
+ if (SUBRP (fun))
+ {
+ if (XSUBR (fun)->prompt)
+ return list2 (Qinteractive, build_string (XSUBR (fun)->prompt));
+ }
+ else if (COMPILEDP (fun))
+ {
+ if ((ASIZE (fun) & PSEUDOVECTOR_SIZE_MASK) > COMPILED_INTERACTIVE)
+ return list2 (Qinteractive, AREF (fun, COMPILED_INTERACTIVE));
+ }
+ else if (CONSP (fun))
+ {
+ Lisp_Object funcar = XCAR (fun);
+ if (EQ (funcar, Qlambda))
+ return Fassq (Qinteractive, Fcdr (XCDR (fun)));
+ else if (EQ (funcar, Qautoload))
+ {
+ struct gcpro gcpro1;
+ GCPRO1 (cmd);
+ do_autoload (fun, cmd);
+ UNGCPRO;
+ return Finteractive_form (cmd);
+ }
+ }
+ return Qnil;
+ }
+
+
+ /***********************************************************************
+ Getting and Setting Values of Symbols
+ ***********************************************************************/
+
+ /* Return the symbol holding SYMBOL's value. Signal
+ `cyclic-variable-indirection' if SYMBOL's chain of variable
+ indirections contains a loop. */
+
+ Lisp_Object
+ indirect_variable (symbol)
+ Lisp_Object symbol;
+ {
+ Lisp_Object tortoise, hare;
+
+ hare = tortoise = symbol;
+
+ while (XSYMBOL (hare)->indirect_variable)
+ {
+ hare = XSYMBOL (hare)->value;
+ if (!XSYMBOL (hare)->indirect_variable)
+ break;
+
+ hare = XSYMBOL (hare)->value;
+ tortoise = XSYMBOL (tortoise)->value;
+
+ if (EQ (hare, tortoise))
+ Fsignal (Qcyclic_variable_indirection, Fcons (symbol, Qnil));
+ }
+
+ return hare;
+ }
+
+
+ DEFUN ("indirect-variable", Findirect_variable, Sindirect_variable, 1, 1, 0,
+ doc: /* Return the variable at the end of OBJECT's variable chain.
+ If OBJECT is a symbol, follow all variable indirections and return the final
+ variable. If OBJECT is not a symbol, just return it.
+ Signal a cyclic-variable-indirection error if there is a loop in the
+ variable chain of symbols. */)
+ (object)
+ Lisp_Object object;
+ {
+ if (SYMBOLP (object))
+ object = indirect_variable (object);
+ return object;
+ }
+
+
+ /* Given the raw contents of a symbol value cell,
+ return the Lisp value of the symbol.
+ This does not handle buffer-local variables; use
+ swap_in_symval_forwarding for that. */
+
+ Lisp_Object
+ do_symval_forwarding (valcontents)
+ register Lisp_Object valcontents;
+ {
+ register Lisp_Object val;
+ int offset;
+ if (MISCP (valcontents))
+ switch (XMISCTYPE (valcontents))
+ {
+ case Lisp_Misc_Intfwd:
+ XSETINT (val, *XINTFWD (valcontents)->intvar);
+ return val;
+
+ case Lisp_Misc_Boolfwd:
+ return (*XBOOLFWD (valcontents)->boolvar ? Qt : Qnil);
+
+ case Lisp_Misc_Objfwd:
+ return *XOBJFWD (valcontents)->objvar;
+
+ case Lisp_Misc_Buffer_Objfwd:
+ offset = XBUFFER_OBJFWD (valcontents)->offset;
+ return PER_BUFFER_VALUE (current_buffer, offset);
+
+ case Lisp_Misc_Kboard_Objfwd:
+ offset = XKBOARD_OBJFWD (valcontents)->offset;
+ return *(Lisp_Object *)(offset + (char *)current_kboard);
+ }
+ return valcontents;
+ }
+
+ /* Store NEWVAL into SYMBOL, where VALCONTENTS is found in the value cell
+ of SYMBOL. If SYMBOL is buffer-local, VALCONTENTS should be the
+ buffer-independent contents of the value cell: forwarded just one
+ step past the buffer-localness.
+
+ BUF non-zero means set the value in buffer BUF instead of the
+ current buffer. This only plays a role for per-buffer variables. */
+
+ void
+ store_symval_forwarding (symbol, valcontents, newval, buf)
+ Lisp_Object symbol;
+ register Lisp_Object valcontents, newval;
+ struct buffer *buf;
+ {
+ int offset;
+
+ switch (SWITCH_ENUM_CAST (XTYPE (valcontents)))
+ {
+ case Lisp_Misc:
+ switch (XMISCTYPE (valcontents))
+ {
+ case Lisp_Misc_Intfwd:
+ CHECK_NUMBER (newval);
+ *XINTFWD (valcontents)->intvar = XINT (newval);
+ if (*XINTFWD (valcontents)->intvar != XINT (newval))
+ error ("Value out of range for variable `%s'",
+ SDATA (SYMBOL_NAME (symbol)));
+ break;
+
+ case Lisp_Misc_Boolfwd:
+ *XBOOLFWD (valcontents)->boolvar = NILP (newval) ? 0 : 1;
+ break;
+
+ case Lisp_Misc_Objfwd:
+ *XOBJFWD (valcontents)->objvar = newval;
+
+ /* If this variable is a default for something stored
+ in the buffer itself, such as default-fill-column,
+ find the buffers that don't have local values for it
+ and update them. */
+ if (XOBJFWD (valcontents)->objvar > (Lisp_Object *) &buffer_defaults
+ && XOBJFWD (valcontents)->objvar < (Lisp_Object *)
(&buffer_defaults + 1))
+ {
+ int offset = ((char *) XOBJFWD (valcontents)->objvar
+ - (char *) &buffer_defaults);
+ int idx = PER_BUFFER_IDX (offset);
+
+ Lisp_Object tail, buf;
+
+ if (idx <= 0)
+ break;
+
+ for (tail = Vbuffer_alist; CONSP (tail); tail = XCDR (tail))
+ {
+ Lisp_Object buf;
+ struct buffer *b;
+
+ buf = Fcdr (XCAR (tail));
+ if (!BUFFERP (buf)) continue;
+ b = XBUFFER (buf);
+
+ if (! PER_BUFFER_VALUE_P (b, idx))
+ PER_BUFFER_VALUE (b, offset) = newval;
+ }
+ }
+ break;
+
+ case Lisp_Misc_Buffer_Objfwd:
+ {
+ int offset = XBUFFER_OBJFWD (valcontents)->offset;
+ Lisp_Object type;
+
+ type = PER_BUFFER_TYPE (offset);
+ if (! NILP (type) && ! NILP (newval)
+ && XTYPE (newval) != XINT (type))
+ buffer_slot_type_mismatch (offset);
+
+ if (buf == NULL)
+ buf = current_buffer;
+ PER_BUFFER_VALUE (buf, offset) = newval;
+ }
+ break;
+
+ case Lisp_Misc_Kboard_Objfwd:
+ {
+ char *base = (char *) current_kboard;
+ char *p = base + XKBOARD_OBJFWD (valcontents)->offset;
+ *(Lisp_Object *) p = newval;
+ }
+ break;
+
+ default:
+ goto def;
+ }
+ break;
+
+ default:
+ def:
+ valcontents = SYMBOL_VALUE (symbol);
+ if (BUFFER_LOCAL_VALUEP (valcontents)
+ || SOME_BUFFER_LOCAL_VALUEP (valcontents))
+ XBUFFER_LOCAL_VALUE (valcontents)->realvalue = newval;
+ else
+ SET_SYMBOL_VALUE (symbol, newval);
+ }
+ }
+
+ /* Set up SYMBOL to refer to its global binding.
+ This makes it safe to alter the status of other bindings. */
+
+ void
+ swap_in_global_binding (symbol)
+ Lisp_Object symbol;
+ {
+ Lisp_Object valcontents, cdr;
+
+ valcontents = SYMBOL_VALUE (symbol);
+ if (!BUFFER_LOCAL_VALUEP (valcontents)
+ && !SOME_BUFFER_LOCAL_VALUEP (valcontents))
+ abort ();
+ cdr = XBUFFER_LOCAL_VALUE (valcontents)->cdr;
+
+ /* Unload the previously loaded binding. */
+ Fsetcdr (XCAR (cdr),
+ do_symval_forwarding (XBUFFER_LOCAL_VALUE (valcontents)->realvalue));
+
+ /* Select the global binding in the symbol. */
+ XSETCAR (cdr, cdr);
+ store_symval_forwarding (symbol, valcontents, XCDR (cdr), NULL);
+
+ /* Indicate that the global binding is set up now. */
+ XBUFFER_LOCAL_VALUE (valcontents)->frame = Qnil;
+ XBUFFER_LOCAL_VALUE (valcontents)->buffer = Qnil;
+ XBUFFER_LOCAL_VALUE (valcontents)->found_for_frame = 0;
+ XBUFFER_LOCAL_VALUE (valcontents)->found_for_buffer = 0;
+ }
+
+ /* Set up the buffer-local symbol SYMBOL for validity in the current buffer.
+ VALCONTENTS is the contents of its value cell,
+ which points to a struct Lisp_Buffer_Local_Value.
+
+ Return the value forwarded one step past the buffer-local stage.
+ This could be another forwarding pointer. */
+
+ static Lisp_Object
+ swap_in_symval_forwarding (symbol, valcontents)
+ Lisp_Object symbol, valcontents;
+ {
+ register Lisp_Object tem1;
+
+ tem1 = XBUFFER_LOCAL_VALUE (valcontents)->buffer;
+
+ if (NILP (tem1)
+ || current_buffer != XBUFFER (tem1)
+ || (XBUFFER_LOCAL_VALUE (valcontents)->check_frame
+ && ! EQ (selected_frame, XBUFFER_LOCAL_VALUE (valcontents)->frame)))
+ {
+ if (XSYMBOL (symbol)->indirect_variable)
+ symbol = indirect_variable (symbol);
+
+ /* Unload the previously loaded binding. */
+ tem1 = XCAR (XBUFFER_LOCAL_VALUE (valcontents)->cdr);
+ Fsetcdr (tem1,
+ do_symval_forwarding (XBUFFER_LOCAL_VALUE
(valcontents)->realvalue));
+ /* Choose the new binding. */
+ tem1 = assq_no_quit (symbol, current_buffer->local_var_alist);
+ XBUFFER_LOCAL_VALUE (valcontents)->found_for_frame = 0;
+ XBUFFER_LOCAL_VALUE (valcontents)->found_for_buffer = 0;
+ if (NILP (tem1))
+ {
+ if (XBUFFER_LOCAL_VALUE (valcontents)->check_frame)
+ tem1 = assq_no_quit (symbol, XFRAME (selected_frame)->param_alist);
+ if (! NILP (tem1))
+ XBUFFER_LOCAL_VALUE (valcontents)->found_for_frame = 1;
+ else
+ tem1 = XBUFFER_LOCAL_VALUE (valcontents)->cdr;
+ }
+ else
+ XBUFFER_LOCAL_VALUE (valcontents)->found_for_buffer = 1;
+
+ /* Load the new binding. */
+ XSETCAR (XBUFFER_LOCAL_VALUE (valcontents)->cdr, tem1);
+ XSETBUFFER (XBUFFER_LOCAL_VALUE (valcontents)->buffer, current_buffer);
+ XBUFFER_LOCAL_VALUE (valcontents)->frame = selected_frame;
+ store_symval_forwarding (symbol,
+ XBUFFER_LOCAL_VALUE (valcontents)->realvalue,
+ Fcdr (tem1), NULL);
+ }
+ return XBUFFER_LOCAL_VALUE (valcontents)->realvalue;
+ }
+
+ /* Find the value of a symbol, returning Qunbound if it's not bound.
+ This is helpful for code which just wants to get a variable's value
+ if it has one, without signaling an error.
+ Note that it must not be possible to quit
+ within this function. Great care is required for this. */
+
+ Lisp_Object
+ find_symbol_value (symbol)
+ Lisp_Object symbol;
+ {
+ register Lisp_Object valcontents;
+ register Lisp_Object val;
+
+ CHECK_SYMBOL (symbol);
+ valcontents = SYMBOL_VALUE (symbol);
+
+ if (BUFFER_LOCAL_VALUEP (valcontents)
+ || SOME_BUFFER_LOCAL_VALUEP (valcontents))
+ valcontents = swap_in_symval_forwarding (symbol, valcontents);
+
+ if (MISCP (valcontents))
+ {
+ switch (XMISCTYPE (valcontents))
+ {
+ case Lisp_Misc_Intfwd:
+ XSETINT (val, *XINTFWD (valcontents)->intvar);
+ return val;
+
+ case Lisp_Misc_Boolfwd:
+ return (*XBOOLFWD (valcontents)->boolvar ? Qt : Qnil);
+
+ case Lisp_Misc_Objfwd:
+ return *XOBJFWD (valcontents)->objvar;
+
+ case Lisp_Misc_Buffer_Objfwd:
+ return PER_BUFFER_VALUE (current_buffer,
+ XBUFFER_OBJFWD (valcontents)->offset);
+
+ case Lisp_Misc_Kboard_Objfwd:
+ return *(Lisp_Object *)(XKBOARD_OBJFWD (valcontents)->offset
+ + (char *)current_kboard);
+ }
+ }
+
+ return valcontents;
+ }
+
+ DEFUN ("symbol-value", Fsymbol_value, Ssymbol_value, 1, 1, 0,
+ doc: /* Return SYMBOL's value. Error if that is void. */)
+ (symbol)
+ Lisp_Object symbol;
+ {
+ Lisp_Object val;
+
+ val = find_symbol_value (symbol);
+ if (EQ (val, Qunbound))
+ return Fsignal (Qvoid_variable, Fcons (symbol, Qnil));
+ else
+ return val;
+ }
+
+ DEFUN ("set", Fset, Sset, 2, 2, 0,
+ doc: /* Set SYMBOL's value to NEWVAL, and return NEWVAL. */)
+ (symbol, newval)
+ register Lisp_Object symbol, newval;
+ {
+ return set_internal (symbol, newval, current_buffer, 0);
+ }
+
+ /* Return 1 if SYMBOL currently has a let-binding
+ which was made in the buffer that is now current. */
+
+ static int
+ let_shadows_buffer_binding_p (symbol)
+ Lisp_Object symbol;
+ {
+ volatile struct specbinding *p;
+
+ for (p = specpdl_ptr - 1; p >= specpdl; p--)
+ if (p->func == NULL
+ && CONSP (p->symbol))
+ {
+ Lisp_Object let_bound_symbol = XCAR (p->symbol);
+ if ((EQ (symbol, let_bound_symbol)
+ || (XSYMBOL (let_bound_symbol)->indirect_variable
+ && EQ (symbol, indirect_variable (let_bound_symbol))))
+ && XBUFFER (XCDR (XCDR (p->symbol))) == current_buffer)
+ break;
+ }
+
+ return p >= specpdl;
+ }
+
+ /* Store the value NEWVAL into SYMBOL.
+ If buffer-locality is an issue, BUF specifies which buffer to use.
+ (0 stands for the current buffer.)
+
+ If BINDFLAG is zero, then if this symbol is supposed to become
+ local in every buffer where it is set, then we make it local.
+ If BINDFLAG is nonzero, we don't do that. */
+
+ Lisp_Object
+ set_internal (symbol, newval, buf, bindflag)
+ register Lisp_Object symbol, newval;
+ struct buffer *buf;
+ int bindflag;
+ {
+ int voide = EQ (newval, Qunbound);
+
+ register Lisp_Object valcontents, innercontents, tem1,
current_alist_element;
+
+ if (buf == 0)
+ buf = current_buffer;
+
+ /* If restoring in a dead buffer, do nothing. */
+ if (NILP (buf->name))
+ return newval;
+
+ CHECK_SYMBOL (symbol);
+ if (SYMBOL_CONSTANT_P (symbol)
+ && (NILP (Fkeywordp (symbol))
+ || !EQ (newval, SYMBOL_VALUE (symbol))))
+ return Fsignal (Qsetting_constant, Fcons (symbol, Qnil));
+
+ innercontents = valcontents = SYMBOL_VALUE (symbol);
+
+ if (BUFFER_OBJFWDP (valcontents))
+ {
+ int offset = XBUFFER_OBJFWD (valcontents)->offset;
+ int idx = PER_BUFFER_IDX (offset);
+ if (idx > 0
+ && !bindflag
+ && !let_shadows_buffer_binding_p (symbol))
+ SET_PER_BUFFER_VALUE_P (buf, idx, 1);
+ }
+ else if (BUFFER_LOCAL_VALUEP (valcontents)
+ || SOME_BUFFER_LOCAL_VALUEP (valcontents))
+ {
+ /* valcontents is a struct Lisp_Buffer_Local_Value. */
+ if (XSYMBOL (symbol)->indirect_variable)
+ symbol = indirect_variable (symbol);
+
+ /* What binding is loaded right now? */
+ current_alist_element
+ = XCAR (XBUFFER_LOCAL_VALUE (valcontents)->cdr);
+
+ /* If the current buffer is not the buffer whose binding is
+ loaded, or if there may be frame-local bindings and the frame
+ isn't the right one, or if it's a Lisp_Buffer_Local_Value and
+ the default binding is loaded, the loaded binding may be the
+ wrong one. */
+ if (!BUFFERP (XBUFFER_LOCAL_VALUE (valcontents)->buffer)
+ || buf != XBUFFER (XBUFFER_LOCAL_VALUE (valcontents)->buffer)
+ || (XBUFFER_LOCAL_VALUE (valcontents)->check_frame
+ && !EQ (selected_frame, XBUFFER_LOCAL_VALUE (valcontents)->frame))
+ || (BUFFER_LOCAL_VALUEP (valcontents)
+ && EQ (XCAR (current_alist_element),
+ current_alist_element)))
+ {
+ /* The currently loaded binding is not necessarily valid.
+ We need to unload it, and choose a new binding. */
+
+ /* Write out `realvalue' to the old loaded binding. */
+ Fsetcdr (current_alist_element,
+ do_symval_forwarding (XBUFFER_LOCAL_VALUE
(valcontents)->realvalue));
+
+ /* Find the new binding. */
+ tem1 = Fassq (symbol, buf->local_var_alist);
+ XBUFFER_LOCAL_VALUE (valcontents)->found_for_buffer = 1;
+ XBUFFER_LOCAL_VALUE (valcontents)->found_for_frame = 0;
+
+ if (NILP (tem1))
+ {
+ /* This buffer still sees the default value. */
+
+ /* If the variable is a Lisp_Some_Buffer_Local_Value,
+ or if this is `let' rather than `set',
+ make CURRENT-ALIST-ELEMENT point to itself,
+ indicating that we're seeing the default value.
+ Likewise if the variable has been let-bound
+ in the current buffer. */
+ if (bindflag || SOME_BUFFER_LOCAL_VALUEP (valcontents)
+ || let_shadows_buffer_binding_p (symbol))
+ {
+ XBUFFER_LOCAL_VALUE (valcontents)->found_for_buffer = 0;
+
+ if (XBUFFER_LOCAL_VALUE (valcontents)->check_frame)
+ tem1 = Fassq (symbol,
+ XFRAME (selected_frame)->param_alist);
+
+ if (! NILP (tem1))
+ XBUFFER_LOCAL_VALUE (valcontents)->found_for_frame = 1;
+ else
+ tem1 = XBUFFER_LOCAL_VALUE (valcontents)->cdr;
+ }
+ /* If it's a Lisp_Buffer_Local_Value, being set not bound,
+ and we're not within a let that was made for this buffer,
+ create a new buffer-local binding for the variable.
+ That means, give this buffer a new assoc for a local value
+ and load that binding. */
+ else
+ {
+ tem1 = Fcons (symbol, XCDR (current_alist_element));
+ buf->local_var_alist
+ = Fcons (tem1, buf->local_var_alist);
+ }
+ }
+
+ /* Record which binding is now loaded. */
+ XSETCAR (XBUFFER_LOCAL_VALUE (valcontents)->cdr,
+ tem1);
+
+ /* Set `buffer' and `frame' slots for thebinding now loaded. */
+ XSETBUFFER (XBUFFER_LOCAL_VALUE (valcontents)->buffer, buf);
+ XBUFFER_LOCAL_VALUE (valcontents)->frame = selected_frame;
+ }
+ innercontents = XBUFFER_LOCAL_VALUE (valcontents)->realvalue;
+ }
+
+ /* If storing void (making the symbol void), forward only through
+ buffer-local indicator, not through Lisp_Objfwd, etc. */
+ if (voide)
+ store_symval_forwarding (symbol, Qnil, newval, buf);
+ else
+ store_symval_forwarding (symbol, innercontents, newval, buf);
+
+ /* If we just set a variable whose current binding is frame-local,
+ store the new value in the frame parameter too. */
+
+ if (BUFFER_LOCAL_VALUEP (valcontents)
+ || SOME_BUFFER_LOCAL_VALUEP (valcontents))
+ {
+ /* What binding is loaded right now? */
+ current_alist_element
+ = XCAR (XBUFFER_LOCAL_VALUE (valcontents)->cdr);
+
+ /* If the current buffer is not the buffer whose binding is
+ loaded, or if there may be frame-local bindings and the frame
+ isn't the right one, or if it's a Lisp_Buffer_Local_Value and
+ the default binding is loaded, the loaded binding may be the
+ wrong one. */
+ if (XBUFFER_LOCAL_VALUE (valcontents)->found_for_frame)
+ XSETCDR (current_alist_element, newval);
+ }
+
+ return newval;
+ }
+
+ /* Access or set a buffer-local symbol's default value. */
+
+ /* Return the default value of SYMBOL, but don't check for voidness.
+ Return Qunbound if it is void. */
+
+ Lisp_Object
+ default_value (symbol)
+ Lisp_Object symbol;
+ {
+ register Lisp_Object valcontents;
+
+ CHECK_SYMBOL (symbol);
+ valcontents = SYMBOL_VALUE (symbol);
+
+ /* For a built-in buffer-local variable, get the default value
+ rather than letting do_symval_forwarding get the current value. */
+ if (BUFFER_OBJFWDP (valcontents))
+ {
+ int offset = XBUFFER_OBJFWD (valcontents)->offset;
+ if (PER_BUFFER_IDX (offset) != 0)
+ return PER_BUFFER_DEFAULT (offset);
+ }
+
+ /* Handle user-created local variables. */
+ if (BUFFER_LOCAL_VALUEP (valcontents)
+ || SOME_BUFFER_LOCAL_VALUEP (valcontents))
+ {
+ /* If var is set up for a buffer that lacks a local value for it,
+ the current value is nominally the default value.
+ But the `realvalue' slot may be more up to date, since
+ ordinary setq stores just that slot. So use that. */
+ Lisp_Object current_alist_element, alist_element_car;
+ current_alist_element
+ = XCAR (XBUFFER_LOCAL_VALUE (valcontents)->cdr);
+ alist_element_car = XCAR (current_alist_element);
+ if (EQ (alist_element_car, current_alist_element))
+ return do_symval_forwarding (XBUFFER_LOCAL_VALUE
(valcontents)->realvalue);
+ else
+ return XCDR (XBUFFER_LOCAL_VALUE (valcontents)->cdr);
+ }
+ /* For other variables, get the current value. */
+ return do_symval_forwarding (valcontents);
+ }
+
+ DEFUN ("default-boundp", Fdefault_boundp, Sdefault_boundp, 1, 1, 0,
+ doc: /* Return t if SYMBOL has a non-void default value.
+ This is the value that is seen in buffers that do not have their own values
+ for this variable. */)
+ (symbol)
+ Lisp_Object symbol;
+ {
+ register Lisp_Object value;
+
+ value = default_value (symbol);
+ return (EQ (value, Qunbound) ? Qnil : Qt);
+ }
+
+ DEFUN ("default-value", Fdefault_value, Sdefault_value, 1, 1, 0,
+ doc: /* Return SYMBOL's default value.
+ This is the value that is seen in buffers that do not have their own values
+ for this variable. The default value is meaningful for variables with
+ local bindings in certain buffers. */)
+ (symbol)
+ Lisp_Object symbol;
+ {
+ register Lisp_Object value;
+
+ value = default_value (symbol);
+ if (EQ (value, Qunbound))
+ return Fsignal (Qvoid_variable, Fcons (symbol, Qnil));
+ return value;
+ }
+
+ DEFUN ("set-default", Fset_default, Sset_default, 2, 2, 0,
+ doc: /* Set SYMBOL's default value to VALUE. SYMBOL and VALUE are
evaluated.
+ The default value is seen in buffers that do not have their own values
+ for this variable. */)
+ (symbol, value)
+ Lisp_Object symbol, value;
+ {
+ register Lisp_Object valcontents, current_alist_element,
alist_element_buffer;
+
+ CHECK_SYMBOL (symbol);
+ valcontents = SYMBOL_VALUE (symbol);
+
+ /* Handle variables like case-fold-search that have special slots
+ in the buffer. Make them work apparently like Lisp_Buffer_Local_Value
+ variables. */
+ if (BUFFER_OBJFWDP (valcontents))
+ {
+ int offset = XBUFFER_OBJFWD (valcontents)->offset;
+ int idx = PER_BUFFER_IDX (offset);
+
+ PER_BUFFER_DEFAULT (offset) = value;
+
+ /* If this variable is not always local in all buffers,
+ set it in the buffers that don't nominally have a local value. */
+ if (idx > 0)
+ {
+ struct buffer *b;
+
+ for (b = all_buffers; b; b = b->next)
+ if (!PER_BUFFER_VALUE_P (b, idx))
+ PER_BUFFER_VALUE (b, offset) = value;
+ }
+ return value;
+ }
+
+ if (!BUFFER_LOCAL_VALUEP (valcontents)
+ && !SOME_BUFFER_LOCAL_VALUEP (valcontents))
+ return Fset (symbol, value);
+
+ /* Store new value into the DEFAULT-VALUE slot. */
+ XSETCDR (XBUFFER_LOCAL_VALUE (valcontents)->cdr, value);
+
+ /* If the default binding is now loaded, set the REALVALUE slot too. */
+ current_alist_element
+ = XCAR (XBUFFER_LOCAL_VALUE (valcontents)->cdr);
+ alist_element_buffer = Fcar (current_alist_element);
+ if (EQ (alist_element_buffer, current_alist_element))
+ store_symval_forwarding (symbol,
+ XBUFFER_LOCAL_VALUE (valcontents)->realvalue,
+ value, NULL);
+
+ return value;
+ }
+
+ DEFUN ("setq-default", Fsetq_default, Ssetq_default, 2, UNEVALLED, 0,
+ doc: /* Set the default value of variable VAR to VALUE.
+ VAR, the variable name, is literal (not evaluated);
+ VALUE is an expression: it is evaluated and its value returned.
+ The default value of a variable is seen in buffers
+ that do not have their own values for the variable.
+
+ More generally, you can use multiple variables and values, as in
+ (setq-default VAR VALUE VAR VALUE...)
+ This sets each VAR's default value to the corresponding VALUE.
+ The VALUE for the Nth VAR can refer to the new default values
+ of previous VARs.
+ usage: (setq-default VAR VALUE [VAR VALUE...]) */)
+ (args)
+ Lisp_Object args;
+ {
+ register Lisp_Object args_left;
+ register Lisp_Object val, symbol;
+ struct gcpro gcpro1;
+
+ if (NILP (args))
+ return Qnil;
+
+ args_left = args;
+ GCPRO1 (args);
+
+ do
+ {
+ val = Feval (Fcar (Fcdr (args_left)));
+ symbol = XCAR (args_left);
+ Fset_default (symbol, val);
+ args_left = Fcdr (XCDR (args_left));
+ }
+ while (!NILP (args_left));
+
+ UNGCPRO;
+ return val;
+ }
+
+ /* Lisp functions for creating and removing buffer-local variables. */
+
+ DEFUN ("make-variable-buffer-local", Fmake_variable_buffer_local,
Smake_variable_buffer_local,
+ 1, 1, "vMake Variable Buffer Local: ",
+ doc: /* Make VARIABLE become buffer-local whenever it is set.
+ At any time, the value for the current buffer is in effect,
+ unless the variable has never been set in this buffer,
+ in which case the default value is in effect.
+ Note that binding the variable with `let', or setting it while
+ a `let'-style binding made in this buffer is in effect,
+ does not make the variable buffer-local. Return VARIABLE.
+
+ The function `default-value' gets the default value and `set-default' sets
it. */)
+ (variable)
+ register Lisp_Object variable;
+ {
+ register Lisp_Object tem, valcontents, newval;
+
+ CHECK_SYMBOL (variable);
+ variable = indirect_variable (variable);
+
+ valcontents = SYMBOL_VALUE (variable);
+ if (EQ (variable, Qnil) || EQ (variable, Qt) || KBOARD_OBJFWDP
(valcontents))
+ error ("Symbol %s may not be buffer-local", SDATA (SYMBOL_NAME
(variable)));
+
+ if (BUFFER_LOCAL_VALUEP (valcontents) || BUFFER_OBJFWDP (valcontents))
+ return variable;
+ if (SOME_BUFFER_LOCAL_VALUEP (valcontents))
+ {
+ XMISCTYPE (SYMBOL_VALUE (variable)) = Lisp_Misc_Buffer_Local_Value;
+ return variable;
+ }
+ if (EQ (valcontents, Qunbound))
+ SET_SYMBOL_VALUE (variable, Qnil);
+ tem = Fcons (Qnil, Fsymbol_value (variable));
+ XSETCAR (tem, tem);
+ newval = allocate_misc ();
+ XMISCTYPE (newval) = Lisp_Misc_Buffer_Local_Value;
+ XBUFFER_LOCAL_VALUE (newval)->realvalue = SYMBOL_VALUE (variable);
+ XBUFFER_LOCAL_VALUE (newval)->buffer = Fcurrent_buffer ();
+ XBUFFER_LOCAL_VALUE (newval)->frame = Qnil;
+ XBUFFER_LOCAL_VALUE (newval)->found_for_buffer = 0;
+ XBUFFER_LOCAL_VALUE (newval)->found_for_frame = 0;
+ XBUFFER_LOCAL_VALUE (newval)->check_frame = 0;
+ XBUFFER_LOCAL_VALUE (newval)->cdr = tem;
+ SET_SYMBOL_VALUE (variable, newval);
+ return variable;
+ }
+
+ DEFUN ("make-local-variable", Fmake_local_variable, Smake_local_variable,
+ 1, 1, "vMake Local Variable: ",
+ doc: /* Make VARIABLE have a separate value in the current buffer.
+ Other buffers will continue to share a common default value.
+ \(The buffer-local value of VARIABLE starts out as the same value
+ VARIABLE previously had. If VARIABLE was void, it remains void.\)
+ See also `make-variable-buffer-local'. Return VARIABLE.
+
+ If the variable is already arranged to become local when set,
+ this function causes a local value to exist for this buffer,
+ just as setting the variable would do.
+
+ This function returns VARIABLE, and therefore
+ (set (make-local-variable 'VARIABLE) VALUE-EXP)
+ works.
+
+ Do not use `make-local-variable' to make a hook variable buffer-local.
+ Instead, use `add-hook' and specify t for the LOCAL argument. */)
+ (variable)
+ register Lisp_Object variable;
+ {
+ register Lisp_Object tem, valcontents;
+
+ CHECK_SYMBOL (variable);
+ variable = indirect_variable (variable);
+
+ valcontents = SYMBOL_VALUE (variable);
+ if (EQ (variable, Qnil) || EQ (variable, Qt) || KBOARD_OBJFWDP
(valcontents))
+ error ("Symbol %s may not be buffer-local", SDATA (SYMBOL_NAME
(variable)));
+
+ if (BUFFER_LOCAL_VALUEP (valcontents) || BUFFER_OBJFWDP (valcontents))
+ {
+ tem = Fboundp (variable);
+
+ /* Make sure the symbol has a local value in this particular buffer,
+ by setting it to the same value it already has. */
+ Fset (variable, (EQ (tem, Qt) ? Fsymbol_value (variable) : Qunbound));
+ return variable;
+ }
+ /* Make sure symbol is set up to hold per-buffer values. */
+ if (!SOME_BUFFER_LOCAL_VALUEP (valcontents))
+ {
+ Lisp_Object newval;
+ tem = Fcons (Qnil, do_symval_forwarding (valcontents));
+ XSETCAR (tem, tem);
+ newval = allocate_misc ();
+ XMISCTYPE (newval) = Lisp_Misc_Some_Buffer_Local_Value;
+ XBUFFER_LOCAL_VALUE (newval)->realvalue = SYMBOL_VALUE (variable);
+ XBUFFER_LOCAL_VALUE (newval)->buffer = Qnil;
+ XBUFFER_LOCAL_VALUE (newval)->frame = Qnil;
+ XBUFFER_LOCAL_VALUE (newval)->found_for_buffer = 0;
+ XBUFFER_LOCAL_VALUE (newval)->found_for_frame = 0;
+ XBUFFER_LOCAL_VALUE (newval)->check_frame = 0;
+ XBUFFER_LOCAL_VALUE (newval)->cdr = tem;
+ SET_SYMBOL_VALUE (variable, newval);;
+ }
+ /* Make sure this buffer has its own value of symbol. */
+ tem = Fassq (variable, current_buffer->local_var_alist);
+ if (NILP (tem))
+ {
+ /* Swap out any local binding for some other buffer, and make
+ sure the current value is permanently recorded, if it's the
+ default value. */
+ find_symbol_value (variable);
+
+ current_buffer->local_var_alist
+ = Fcons (Fcons (variable, XCDR (XBUFFER_LOCAL_VALUE (SYMBOL_VALUE
(variable))->cdr)),
+ current_buffer->local_var_alist);
+
+ /* Make sure symbol does not think it is set up for this buffer;
+ force it to look once again for this buffer's value. */
+ {
+ Lisp_Object *pvalbuf;
+
+ valcontents = SYMBOL_VALUE (variable);
+
+ pvalbuf = &XBUFFER_LOCAL_VALUE (valcontents)->buffer;
+ if (current_buffer == XBUFFER (*pvalbuf))
+ *pvalbuf = Qnil;
+ XBUFFER_LOCAL_VALUE (valcontents)->found_for_buffer = 0;
+ }
+ }
+
+ /* If the symbol forwards into a C variable, then load the binding
+ for this buffer now. If C code modifies the variable before we
+ load the binding in, then that new value will clobber the default
+ binding the next time we unload it. */
+ valcontents = XBUFFER_LOCAL_VALUE (SYMBOL_VALUE (variable))->realvalue;
+ if (INTFWDP (valcontents) || BOOLFWDP (valcontents) || OBJFWDP
(valcontents))
+ swap_in_symval_forwarding (variable, SYMBOL_VALUE (variable));
+
+ return variable;
+ }
+
+ DEFUN ("kill-local-variable", Fkill_local_variable, Skill_local_variable,
+ 1, 1, "vKill Local Variable: ",
+ doc: /* Make VARIABLE no longer have a separate value in the current
buffer.
+ From now on the default value will apply in this buffer. Return VARIABLE.
*/)
+ (variable)
+ register Lisp_Object variable;
+ {
+ register Lisp_Object tem, valcontents;
+
+ CHECK_SYMBOL (variable);
+ variable = indirect_variable (variable);
+
+ valcontents = SYMBOL_VALUE (variable);
+
+ if (BUFFER_OBJFWDP (valcontents))
+ {
+ int offset = XBUFFER_OBJFWD (valcontents)->offset;
+ int idx = PER_BUFFER_IDX (offset);
+
+ if (idx > 0)
+ {
+ SET_PER_BUFFER_VALUE_P (current_buffer, idx, 0);
+ PER_BUFFER_VALUE (current_buffer, offset)
+ = PER_BUFFER_DEFAULT (offset);
+ }
+ return variable;
+ }
+
+ if (!BUFFER_LOCAL_VALUEP (valcontents)
+ && !SOME_BUFFER_LOCAL_VALUEP (valcontents))
+ return variable;
+
+ /* Get rid of this buffer's alist element, if any. */
+
+ tem = Fassq (variable, current_buffer->local_var_alist);
+ if (!NILP (tem))
+ current_buffer->local_var_alist
+ = Fdelq (tem, current_buffer->local_var_alist);
+
+ /* If the symbol is set up with the current buffer's binding
+ loaded, recompute its value. We have to do it now, or else
+ forwarded objects won't work right. */
+ {
+ Lisp_Object *pvalbuf, buf;
+ valcontents = SYMBOL_VALUE (variable);
+ pvalbuf = &XBUFFER_LOCAL_VALUE (valcontents)->buffer;
+ XSETBUFFER (buf, current_buffer);
+ if (EQ (buf, *pvalbuf))
+ {
+ *pvalbuf = Qnil;
+ XBUFFER_LOCAL_VALUE (valcontents)->found_for_buffer = 0;
+ find_symbol_value (variable);
+ }
+ }
+
+ return variable;
+ }
+
+ /* Lisp functions for creating and removing buffer-local variables. */
+
+ DEFUN ("make-variable-frame-local", Fmake_variable_frame_local,
Smake_variable_frame_local,
+ 1, 1, "vMake Variable Frame Local: ",
+ doc: /* Enable VARIABLE to have frame-local bindings.
+ When a frame-local binding exists in the current frame,
+ it is in effect whenever the current buffer has no buffer-local binding.
+ A frame-local binding is actually a frame parameter value;
+ thus, any given frame has a local binding for VARIABLE if it has
+ a value for the frame parameter named VARIABLE. Return VARIABLE.
+ See `modify-frame-parameters' for how to set frame parameters. */)
+ (variable)
+ register Lisp_Object variable;
+ {
+ register Lisp_Object tem, valcontents, newval;
+
+ CHECK_SYMBOL (variable);
+ variable = indirect_variable (variable);
+
+ valcontents = SYMBOL_VALUE (variable);
+ if (EQ (variable, Qnil) || EQ (variable, Qt) || KBOARD_OBJFWDP (valcontents)
+ || BUFFER_OBJFWDP (valcontents))
+ error ("Symbol %s may not be frame-local", SDATA (SYMBOL_NAME
(variable)));
+
+ if (BUFFER_LOCAL_VALUEP (valcontents)
+ || SOME_BUFFER_LOCAL_VALUEP (valcontents))
+ {
+ XBUFFER_LOCAL_VALUE (valcontents)->check_frame = 1;
+ return variable;
+ }
+
+ if (EQ (valcontents, Qunbound))
+ SET_SYMBOL_VALUE (variable, Qnil);
+ tem = Fcons (Qnil, Fsymbol_value (variable));
+ XSETCAR (tem, tem);
+ newval = allocate_misc ();
+ XMISCTYPE (newval) = Lisp_Misc_Some_Buffer_Local_Value;
+ XBUFFER_LOCAL_VALUE (newval)->realvalue = SYMBOL_VALUE (variable);
+ XBUFFER_LOCAL_VALUE (newval)->buffer = Qnil;
+ XBUFFER_LOCAL_VALUE (newval)->frame = Qnil;
+ XBUFFER_LOCAL_VALUE (newval)->found_for_buffer = 0;
+ XBUFFER_LOCAL_VALUE (newval)->found_for_frame = 0;
+ XBUFFER_LOCAL_VALUE (newval)->check_frame = 1;
+ XBUFFER_LOCAL_VALUE (newval)->cdr = tem;
+ SET_SYMBOL_VALUE (variable, newval);
+ return variable;
+ }
+
+ DEFUN ("local-variable-p", Flocal_variable_p, Slocal_variable_p,
+ 1, 2, 0,
+ doc: /* Non-nil if VARIABLE has a local binding in buffer BUFFER.
+ BUFFER defaults to the current buffer. */)
+ (variable, buffer)
+ register Lisp_Object variable, buffer;
+ {
+ Lisp_Object valcontents;
+ register struct buffer *buf;
+
+ if (NILP (buffer))
+ buf = current_buffer;
+ else
+ {
+ CHECK_BUFFER (buffer);
+ buf = XBUFFER (buffer);
+ }
+
+ CHECK_SYMBOL (variable);
+ variable = indirect_variable (variable);
+
+ valcontents = SYMBOL_VALUE (variable);
+ if (BUFFER_LOCAL_VALUEP (valcontents)
+ || SOME_BUFFER_LOCAL_VALUEP (valcontents))
+ {
+ Lisp_Object tail, elt;
+
+ for (tail = buf->local_var_alist; CONSP (tail); tail = XCDR (tail))
+ {
+ elt = XCAR (tail);
+ if (EQ (variable, XCAR (elt)))
+ return Qt;
+ }
+ }
+ if (BUFFER_OBJFWDP (valcontents))
+ {
+ int offset = XBUFFER_OBJFWD (valcontents)->offset;
+ int idx = PER_BUFFER_IDX (offset);
+ if (idx == -1 || PER_BUFFER_VALUE_P (buf, idx))
+ return Qt;
+ }
+ return Qnil;
+ }
+
+ DEFUN ("local-variable-if-set-p", Flocal_variable_if_set_p,
Slocal_variable_if_set_p,
+ 1, 2, 0,
+ doc: /* Non-nil if VARIABLE will be local in buffer BUFFER if it is
set there.
+ BUFFER defaults to the current buffer. */)
+ (variable, buffer)
+ register Lisp_Object variable, buffer;
+ {
+ Lisp_Object valcontents;
+ register struct buffer *buf;
+
+ if (NILP (buffer))
+ buf = current_buffer;
+ else
+ {
+ CHECK_BUFFER (buffer);
+ buf = XBUFFER (buffer);
+ }
+
+ CHECK_SYMBOL (variable);
+ variable = indirect_variable (variable);
+
+ valcontents = SYMBOL_VALUE (variable);
+
+ /* This means that make-variable-buffer-local was done. */
+ if (BUFFER_LOCAL_VALUEP (valcontents))
+ return Qt;
+ /* All these slots become local if they are set. */
+ if (BUFFER_OBJFWDP (valcontents))
+ return Qt;
+ if (SOME_BUFFER_LOCAL_VALUEP (valcontents))
+ {
+ Lisp_Object tail, elt;
+ for (tail = buf->local_var_alist; CONSP (tail); tail = XCDR (tail))
+ {
+ elt = XCAR (tail);
+ if (EQ (variable, XCAR (elt)))
+ return Qt;
+ }
+ }
+ return Qnil;
+ }
+
+ DEFUN ("variable-binding-locus", Fvariable_binding_locus,
Svariable_binding_locus,
+ 1, 1, 0,
+ doc: /* Return a value indicating where VARIABLE's current binding
comes from.
+ If the current binding is buffer-local, the value is the current buffer.
+ If the current binding is frame-local, the value is the selected frame.
+ If the current binding is global (the default), the value is nil. */)
+ (variable)
+ register Lisp_Object variable;
+ {
+ Lisp_Object valcontents;
+
+ CHECK_SYMBOL (variable);
+ variable = indirect_variable (variable);
+
+ /* Make sure the current binding is actually swapped in. */
+ find_symbol_value (variable);
+
+ valcontents = XSYMBOL (variable)->value;
+
+ if (BUFFER_LOCAL_VALUEP (valcontents)
+ || SOME_BUFFER_LOCAL_VALUEP (valcontents)
+ || BUFFER_OBJFWDP (valcontents))
+ {
+ /* For a local variable, record both the symbol and which
+ buffer's or frame's value we are saving. */
+ if (!NILP (Flocal_variable_p (variable, Qnil)))
+ return Fcurrent_buffer ();
+ else if (!BUFFER_OBJFWDP (valcontents)
+ && XBUFFER_LOCAL_VALUE (valcontents)->found_for_frame)
+ return XBUFFER_LOCAL_VALUE (valcontents)->frame;
+ }
+
+ return Qnil;
+ }
+
+ /* Find the function at the end of a chain of symbol function indirections.
*/
+
+ /* If OBJECT is a symbol, find the end of its function chain and
+ return the value found there. If OBJECT is not a symbol, just
+ return it. If there is a cycle in the function chain, signal a
+ cyclic-function-indirection error.
+
+ This is like Findirect_function, except that it doesn't signal an
+ error if the chain ends up unbound. */
+ Lisp_Object
+ indirect_function (object)
+ register Lisp_Object object;
+ {
+ Lisp_Object tortoise, hare;
+
+ hare = tortoise = object;
+
+ for (;;)
+ {
+ if (!SYMBOLP (hare) || EQ (hare, Qunbound))
+ break;
+ hare = XSYMBOL (hare)->function;
+ if (!SYMBOLP (hare) || EQ (hare, Qunbound))
+ break;
+ hare = XSYMBOL (hare)->function;
+
+ tortoise = XSYMBOL (tortoise)->function;
+
+ if (EQ (hare, tortoise))
+ Fsignal (Qcyclic_function_indirection, Fcons (object, Qnil));
+ }
+
+ return hare;
+ }
+
+ DEFUN ("indirect-function", Findirect_function, Sindirect_function, 1, 1, 0,
+ doc: /* Return the function at the end of OBJECT's function chain.
+ If OBJECT is a symbol, follow all function indirections and return the final
+ function binding.
+ If OBJECT is not a symbol, just return it.
+ Signal a void-function error if the final symbol is unbound.
+ Signal a cyclic-function-indirection error if there is a loop in the
+ function chain of symbols. */)
+ (object)
+ register Lisp_Object object;
+ {
+ Lisp_Object result;
+
+ result = indirect_function (object);
+
+ if (EQ (result, Qunbound))
+ return Fsignal (Qvoid_function, Fcons (object, Qnil));
+ return result;
+ }
+
+ /* Extract and set vector and string elements */
+
+ DEFUN ("aref", Faref, Saref, 2, 2, 0,
+ doc: /* Return the element of ARRAY at index IDX.
+ ARRAY may be a vector, a string, a char-table, a bool-vector,
+ or a byte-code object. IDX starts at 0. */)
+ (array, idx)
+ register Lisp_Object array;
+ Lisp_Object idx;
+ {
+ register int idxval;
+
+ CHECK_NUMBER (idx);
+ idxval = XINT (idx);
+ if (STRINGP (array))
+ {
+ int c, idxval_byte;
+
+ if (idxval < 0 || idxval >= SCHARS (array))
+ args_out_of_range (array, idx);
+ if (! STRING_MULTIBYTE (array))
+ return make_number ((unsigned char) SREF (array, idxval));
+ idxval_byte = string_char_to_byte (array, idxval);
+
+ c = STRING_CHAR (SDATA (array) + idxval_byte,
+ SBYTES (array) - idxval_byte);
+ return make_number (c);
+ }
+ else if (BOOL_VECTOR_P (array))
+ {
+ int val;
+
+ if (idxval < 0 || idxval >= XBOOL_VECTOR (array)->size)
+ args_out_of_range (array, idx);
+
+ val = (unsigned char) XBOOL_VECTOR (array)->data[idxval /
BOOL_VECTOR_BITS_PER_CHAR];
+ return (val & (1 << (idxval % BOOL_VECTOR_BITS_PER_CHAR)) ? Qt : Qnil);
+ }
+ else if (CHAR_TABLE_P (array))
+ {
+ Lisp_Object val;
+
+ val = Qnil;
+
+ if (idxval < 0)
+ args_out_of_range (array, idx);
+ if (idxval < CHAR_TABLE_ORDINARY_SLOTS)
+ {
+ /* For ASCII and 8-bit European characters, the element is
+ stored in the top table. */
+ val = XCHAR_TABLE (array)->contents[idxval];
+ if (NILP (val))
+ val = XCHAR_TABLE (array)->defalt;
+ while (NILP (val)) /* Follow parents until we find some value. */
+ {
+ array = XCHAR_TABLE (array)->parent;
+ if (NILP (array))
+ return Qnil;
+ val = XCHAR_TABLE (array)->contents[idxval];
+ if (NILP (val))
+ val = XCHAR_TABLE (array)->defalt;
+ }
+ return val;
+ }
+ else
+ {
+ int code[4], i;
+ Lisp_Object sub_table;
+
+ SPLIT_CHAR (idxval, code[0], code[1], code[2]);
+ if (code[1] < 32) code[1] = -1;
+ else if (code[2] < 32) code[2] = -1;
+
+ /* Here, the possible range of CODE[0] (== charset ID) is
+ 128..MAX_CHARSET. Since the top level char table contains
+ data for multibyte characters after 256th element, we must
+ increment CODE[0] by 128 to get a correct index. */
+ code[0] += 128;
+ code[3] = -1; /* anchor */
+
+ try_parent_char_table:
+ sub_table = array;
+ for (i = 0; code[i] >= 0; i++)
+ {
+ val = XCHAR_TABLE (sub_table)->contents[code[i]];
+ if (SUB_CHAR_TABLE_P (val))
+ sub_table = val;
+ else
+ {
+ if (NILP (val))
+ val = XCHAR_TABLE (sub_table)->defalt;
+ if (NILP (val))
+ {
+ array = XCHAR_TABLE (array)->parent;
+ if (!NILP (array))
+ goto try_parent_char_table;
+ }
+ return val;
+ }
+ }
+ /* Here, VAL is a sub char table. We try the default value
+ and parent. */
+ val = XCHAR_TABLE (val)->defalt;
+ if (NILP (val))
+ {
+ array = XCHAR_TABLE (array)->parent;
+ if (!NILP (array))
+ goto try_parent_char_table;
+ }
+ return val;
+ }
+ }
+ else
+ {
+ int size = 0;
+ if (VECTORP (array))
+ size = XVECTOR (array)->size;
+ else if (COMPILEDP (array))
+ size = XVECTOR (array)->size & PSEUDOVECTOR_SIZE_MASK;
+ else
+ wrong_type_argument (Qarrayp, array);
+
+ if (idxval < 0 || idxval >= size)
+ args_out_of_range (array, idx);
+ return XVECTOR (array)->contents[idxval];
+ }
+ }
+
+ DEFUN ("aset", Faset, Saset, 3, 3, 0,
+ doc: /* Store into the element of ARRAY at index IDX the value NEWELT.
+ Return NEWELT. ARRAY may be a vector, a string, a char-table or a
+ bool-vector. IDX starts at 0. */)
+ (array, idx, newelt)
+ register Lisp_Object array;
+ Lisp_Object idx, newelt;
+ {
+ register int idxval;
+
+ CHECK_NUMBER (idx);
+ idxval = XINT (idx);
+ if (!VECTORP (array) && !STRINGP (array) && !BOOL_VECTOR_P (array)
+ && ! CHAR_TABLE_P (array))
+ array = wrong_type_argument (Qarrayp, array);
+ CHECK_IMPURE (array);
+
+ if (VECTORP (array))
+ {
+ if (idxval < 0 || idxval >= XVECTOR (array)->size)
+ args_out_of_range (array, idx);
+ XVECTOR (array)->contents[idxval] = newelt;
+ }
+ else if (BOOL_VECTOR_P (array))
+ {
+ int val;
+
+ if (idxval < 0 || idxval >= XBOOL_VECTOR (array)->size)
+ args_out_of_range (array, idx);
+
+ val = (unsigned char) XBOOL_VECTOR (array)->data[idxval /
BOOL_VECTOR_BITS_PER_CHAR];
+
+ if (! NILP (newelt))
+ val |= 1 << (idxval % BOOL_VECTOR_BITS_PER_CHAR);
+ else
+ val &= ~(1 << (idxval % BOOL_VECTOR_BITS_PER_CHAR));
+ XBOOL_VECTOR (array)->data[idxval / BOOL_VECTOR_BITS_PER_CHAR] = val;
+ }
+ else if (CHAR_TABLE_P (array))
+ {
+ if (idxval < 0)
+ args_out_of_range (array, idx);
+ if (idxval < CHAR_TABLE_ORDINARY_SLOTS)
+ XCHAR_TABLE (array)->contents[idxval] = newelt;
+ else
+ {
+ int code[4], i;
+ Lisp_Object val;
+
+ SPLIT_CHAR (idxval, code[0], code[1], code[2]);
+ if (code[1] < 32) code[1] = -1;
+ else if (code[2] < 32) code[2] = -1;
+
+ /* See the comment of the corresponding part in Faref. */
+ code[0] += 128;
+ code[3] = -1; /* anchor */
+ for (i = 0; code[i + 1] >= 0; i++)
+ {
+ val = XCHAR_TABLE (array)->contents[code[i]];
+ if (SUB_CHAR_TABLE_P (val))
+ array = val;
+ else
+ {
+ Lisp_Object temp;
+
+ /* VAL is a leaf. Create a sub char table with the
+ default value VAL or XCHAR_TABLE (array)->defalt
+ and look into it. */
+
+ temp = make_sub_char_table (NILP (val)
+ ? XCHAR_TABLE (array)->defalt
+ : val);
+ XCHAR_TABLE (array)->contents[code[i]] = temp;
+ array = temp;
+ }
+ }
+ XCHAR_TABLE (array)->contents[code[i]] = newelt;
+ }
+ }
+ else if (STRING_MULTIBYTE (array))
+ {
+ int idxval_byte, prev_bytes, new_bytes, nbytes;
+ unsigned char workbuf[MAX_MULTIBYTE_LENGTH], *p0 = workbuf, *p1;
+
+ if (idxval < 0 || idxval >= SCHARS (array))
+ args_out_of_range (array, idx);
+ CHECK_NUMBER (newelt);
+
+ nbytes = SBYTES (array);
+
+ idxval_byte = string_char_to_byte (array, idxval);
+ p1 = SDATA (array) + idxval_byte;
+ PARSE_MULTIBYTE_SEQ (p1, nbytes - idxval_byte, prev_bytes);
+ new_bytes = CHAR_STRING (XINT (newelt), p0);
+ if (prev_bytes != new_bytes)
+ {
+ /* We must relocate the string data. */
+ int nchars = SCHARS (array);
+ unsigned char *str;
+ USE_SAFE_ALLOCA;
+
+ SAFE_ALLOCA (str, unsigned char *, nbytes);
+ bcopy (SDATA (array), str, nbytes);
+ allocate_string_data (XSTRING (array), nchars,
+ nbytes + new_bytes - prev_bytes);
+ bcopy (str, SDATA (array), idxval_byte);
+ p1 = SDATA (array) + idxval_byte;
+ bcopy (str + idxval_byte + prev_bytes, p1 + new_bytes,
+ nbytes - (idxval_byte + prev_bytes));
+ SAFE_FREE (nbytes);
+ clear_string_char_byte_cache ();
+ }
+ while (new_bytes--)
+ *p1++ = *p0++;
+ }
+ else
+ {
+ if (idxval < 0 || idxval >= SCHARS (array))
+ args_out_of_range (array, idx);
+ CHECK_NUMBER (newelt);
+
+ if (XINT (newelt) < 0 || SINGLE_BYTE_CHAR_P (XINT (newelt)))
+ SSET (array, idxval, XINT (newelt));
+ else
+ {
+ /* We must relocate the string data while converting it to
+ multibyte. */
+ int idxval_byte, prev_bytes, new_bytes;
+ unsigned char workbuf[MAX_MULTIBYTE_LENGTH], *p0 = workbuf, *p1;
+ unsigned char *origstr = SDATA (array), *str;
+ int nchars, nbytes;
+ USE_SAFE_ALLOCA;
+
+ nchars = SCHARS (array);
+ nbytes = idxval_byte = count_size_as_multibyte (origstr, idxval);
+ nbytes += count_size_as_multibyte (origstr + idxval,
+ nchars - idxval);
+ SAFE_ALLOCA (str, unsigned char *, nbytes);
+ copy_text (SDATA (array), str, nchars, 0, 1);
+ PARSE_MULTIBYTE_SEQ (str + idxval_byte, nbytes - idxval_byte,
+ prev_bytes);
+ new_bytes = CHAR_STRING (XINT (newelt), p0);
+ allocate_string_data (XSTRING (array), nchars,
+ nbytes + new_bytes - prev_bytes);
+ bcopy (str, SDATA (array), idxval_byte);
+ p1 = SDATA (array) + idxval_byte;
+ while (new_bytes--)
+ *p1++ = *p0++;
+ bcopy (str + idxval_byte + prev_bytes, p1,
+ nbytes - (idxval_byte + prev_bytes));
+ SAFE_FREE (nbytes);
+ clear_string_char_byte_cache ();
+ }
+ }
+
+ return newelt;
+ }
+
+ /* Arithmetic functions */
+
+ enum comparison { equal, notequal, less, grtr, less_or_equal, grtr_or_equal };
+
+ Lisp_Object
+ arithcompare (num1, num2, comparison)
+ Lisp_Object num1, num2;
+ enum comparison comparison;
+ {
+ double f1 = 0, f2 = 0;
+ int floatp = 0;
+
+ CHECK_NUMBER_OR_FLOAT_COERCE_MARKER (num1);
+ CHECK_NUMBER_OR_FLOAT_COERCE_MARKER (num2);
+
+ if (FLOATP (num1) || FLOATP (num2))
+ {
+ floatp = 1;
+ f1 = (FLOATP (num1)) ? XFLOAT_DATA (num1) : XINT (num1);
+ f2 = (FLOATP (num2)) ? XFLOAT_DATA (num2) : XINT (num2);
+ }
+
+ switch (comparison)
+ {
+ case equal:
+ if (floatp ? f1 == f2 : XINT (num1) == XINT (num2))
+ return Qt;
+ return Qnil;
+
+ case notequal:
+ if (floatp ? f1 != f2 : XINT (num1) != XINT (num2))
+ return Qt;
+ return Qnil;
+
+ case less:
+ if (floatp ? f1 < f2 : XINT (num1) < XINT (num2))
+ return Qt;
+ return Qnil;
+
+ case less_or_equal:
+ if (floatp ? f1 <= f2 : XINT (num1) <= XINT (num2))
+ return Qt;
+ return Qnil;
+
+ case grtr:
+ if (floatp ? f1 > f2 : XINT (num1) > XINT (num2))
+ return Qt;
+ return Qnil;
+
+ case grtr_or_equal:
+ if (floatp ? f1 >= f2 : XINT (num1) >= XINT (num2))
+ return Qt;
+ return Qnil;
+
+ default:
+ abort ();
+ }
+ }
+
+ DEFUN ("=", Feqlsign, Seqlsign, 2, 2, 0,
+ doc: /* Return t if two args, both numbers or markers, are equal. */)
+ (num1, num2)
+ register Lisp_Object num1, num2;
+ {
+ return arithcompare (num1, num2, equal);
+ }
+
+ DEFUN ("<", Flss, Slss, 2, 2, 0,
+ doc: /* Return t if first arg is less than second arg. Both must be
numbers or markers. */)
+ (num1, num2)
+ register Lisp_Object num1, num2;
+ {
+ return arithcompare (num1, num2, less);
+ }
+
+ DEFUN (">", Fgtr, Sgtr, 2, 2, 0,
+ doc: /* Return t if first arg is greater than second arg. Both must
be numbers or markers. */)
+ (num1, num2)
+ register Lisp_Object num1, num2;
+ {
+ return arithcompare (num1, num2, grtr);
+ }
+
+ DEFUN ("<=", Fleq, Sleq, 2, 2, 0,
+ doc: /* Return t if first arg is less than or equal to second arg.
+ Both must be numbers or markers. */)
+ (num1, num2)
+ register Lisp_Object num1, num2;
+ {
+ return arithcompare (num1, num2, less_or_equal);
+ }
+
+ DEFUN (">=", Fgeq, Sgeq, 2, 2, 0,
+ doc: /* Return t if first arg is greater than or equal to second arg.
+ Both must be numbers or markers. */)
+ (num1, num2)
+ register Lisp_Object num1, num2;
+ {
+ return arithcompare (num1, num2, grtr_or_equal);
+ }
+
+ DEFUN ("/=", Fneq, Sneq, 2, 2, 0,
+ doc: /* Return t if first arg is not equal to second arg. Both must
be numbers or markers. */)
+ (num1, num2)
+ register Lisp_Object num1, num2;
+ {
+ return arithcompare (num1, num2, notequal);
+ }
+
+ DEFUN ("zerop", Fzerop, Szerop, 1, 1, 0,
+ doc: /* Return t if NUMBER is zero. */)
+ (number)
+ register Lisp_Object number;
+ {
+ CHECK_NUMBER_OR_FLOAT (number);
+
+ if (FLOATP (number))
+ {
+ if (XFLOAT_DATA (number) == 0.0)
+ return Qt;
+ return Qnil;
+ }
+
+ if (!XINT (number))
+ return Qt;
+ return Qnil;
+ }
+
+ /* Convert between long values and pairs of Lisp integers. */
+
+ Lisp_Object
+ long_to_cons (i)
+ unsigned long i;
+ {
+ unsigned long top = i >> 16;
+ unsigned int bot = i & 0xFFFF;
+ if (top == 0)
+ return make_number (bot);
+ if (top == (unsigned long)-1 >> 16)
+ return Fcons (make_number (-1), make_number (bot));
+ return Fcons (make_number (top), make_number (bot));
+ }
+
+ unsigned long
+ cons_to_long (c)
+ Lisp_Object c;
+ {
+ Lisp_Object top, bot;
+ if (INTEGERP (c))
+ return XINT (c);
+ top = XCAR (c);
+ bot = XCDR (c);
+ if (CONSP (bot))
+ bot = XCAR (bot);
+ return ((XINT (top) << 16) | XINT (bot));
+ }
+
+ DEFUN ("number-to-string", Fnumber_to_string, Snumber_to_string, 1, 1, 0,
+ doc: /* Return the decimal representation of NUMBER as a string.
+ Uses a minus sign if negative.
+ NUMBER may be an integer or a floating point number. */)
+ (number)
+ Lisp_Object number;
+ {
+ char buffer[VALBITS];
+
+ CHECK_NUMBER_OR_FLOAT (number);
+
+ if (FLOATP (number))
+ {
+ char pigbuf[350]; /* see comments in float_to_string */
+
+ float_to_string (pigbuf, XFLOAT_DATA (number));
+ return build_string (pigbuf);
+ }
+
+ if (sizeof (int) == sizeof (EMACS_INT))
+ sprintf (buffer, "%d", XINT (number));
+ else if (sizeof (long) == sizeof (EMACS_INT))
+ sprintf (buffer, "%ld", (long) XINT (number));
+ else
+ abort ();
+ return build_string (buffer);
+ }
+
+ INLINE static int
+ digit_to_number (character, base)
+ int character, base;
+ {
+ int digit;
+
+ if (character >= '0' && character <= '9')
+ digit = character - '0';
+ else if (character >= 'a' && character <= 'z')
+ digit = character - 'a' + 10;
+ else if (character >= 'A' && character <= 'Z')
+ digit = character - 'A' + 10;
+ else
+ return -1;
+
+ if (digit >= base)
+ return -1;
+ else
+ return digit;
+ }
+
+ DEFUN ("string-to-number", Fstring_to_number, Sstring_to_number, 1, 2, 0,
+ doc: /* Parse STRING as a decimal number and return the number.
+ This parses both integers and floating point numbers.
+ It ignores leading spaces and tabs.
+
+ If BASE, interpret STRING as a number in that base. If BASE isn't
+ present, base 10 is used. BASE must be between 2 and 16 (inclusive).
+ If the base used is not 10, floating point is not recognized. */)
+ (string, base)
+ register Lisp_Object string, base;
+ {
+ register unsigned char *p;
+ register int b;
+ int sign = 1;
+ Lisp_Object val;
+
+ CHECK_STRING (string);
+
+ if (NILP (base))
+ b = 10;
+ else
+ {
+ CHECK_NUMBER (base);
+ b = XINT (base);
+ if (b < 2 || b > 16)
+ Fsignal (Qargs_out_of_range, Fcons (base, Qnil));
+ }
+
+ /* Skip any whitespace at the front of the number. Some versions of
+ atoi do this anyway, so we might as well make Emacs lisp consistent. */
+ p = SDATA (string);
+ while (*p == ' ' || *p == '\t')
+ p++;
+
+ if (*p == '-')
+ {
+ sign = -1;
+ p++;
+ }
+ else if (*p == '+')
+ p++;
+
+ if (isfloat_string (p) && b == 10)
+ val = make_float (sign * atof (p));
+ else
+ {
+ double v = 0;
+
+ while (1)
+ {
+ int digit = digit_to_number (*p++, b);
+ if (digit < 0)
+ break;
+ v = v * b + digit;
+ }
+
+ val = make_fixnum_or_float (sign * v);
+ }
+
+ return val;
+ }
+
+
+ enum arithop
+ {
+ Aadd,
+ Asub,
+ Amult,
+ Adiv,
+ Alogand,
+ Alogior,
+ Alogxor,
+ Amax,
+ Amin
+ };
+
+ static Lisp_Object float_arith_driver P_ ((double, int, enum arithop,
+ int, Lisp_Object *));
+ extern Lisp_Object fmod_float ();
+
+ Lisp_Object
+ arith_driver (code, nargs, args)
+ enum arithop code;
+ int nargs;
+ register Lisp_Object *args;
+ {
+ register Lisp_Object val;
+ register int argnum;
+ register EMACS_INT accum = 0;
+ register EMACS_INT next;
+
+ switch (SWITCH_ENUM_CAST (code))
+ {
+ case Alogior:
+ case Alogxor:
+ case Aadd:
+ case Asub:
+ accum = 0;
+ break;
+ case Amult:
+ accum = 1;
+ break;
+ case Alogand:
+ accum = -1;
+ break;
+ default:
+ break;
+ }
+
+ for (argnum = 0; argnum < nargs; argnum++)
+ {
+ /* Using args[argnum] as argument to CHECK_NUMBER_... */
+ val = args[argnum];
+ CHECK_NUMBER_OR_FLOAT_COERCE_MARKER (val);
+
+ if (FLOATP (val))
+ return float_arith_driver ((double) accum, argnum, code,
+ nargs, args);
+ args[argnum] = val;
+ next = XINT (args[argnum]);
+ switch (SWITCH_ENUM_CAST (code))
+ {
+ case Aadd:
+ accum += next;
+ break;
+ case Asub:
+ accum = argnum ? accum - next : nargs == 1 ? - next : next;
+ break;
+ case Amult:
+ accum *= next;
+ break;
+ case Adiv:
+ if (!argnum)
+ accum = next;
+ else
+ {
+ if (next == 0)
+ Fsignal (Qarith_error, Qnil);
+ accum /= next;
+ }
+ break;
+ case Alogand:
+ accum &= next;
+ break;
+ case Alogior:
+ accum |= next;
+ break;
+ case Alogxor:
+ accum ^= next;
+ break;
+ case Amax:
+ if (!argnum || next > accum)
+ accum = next;
+ break;
+ case Amin:
+ if (!argnum || next < accum)
+ accum = next;
+ break;
+ }
+ }
+
+ XSETINT (val, accum);
+ return val;
+ }
+
+ #undef isnan
+ #define isnan(x) ((x) != (x))
+
+ static Lisp_Object
+ float_arith_driver (accum, argnum, code, nargs, args)
+ double accum;
+ register int argnum;
+ enum arithop code;
+ int nargs;
+ register Lisp_Object *args;
+ {
+ register Lisp_Object val;
+ double next;
+
+ for (; argnum < nargs; argnum++)
+ {
+ val = args[argnum]; /* using args[argnum] as argument to
CHECK_NUMBER_... */
+ CHECK_NUMBER_OR_FLOAT_COERCE_MARKER (val);
+
+ if (FLOATP (val))
+ {
+ next = XFLOAT_DATA (val);
+ }
+ else
+ {
+ args[argnum] = val; /* runs into a compiler bug. */
+ next = XINT (args[argnum]);
+ }
+ switch (SWITCH_ENUM_CAST (code))
+ {
+ case Aadd:
+ accum += next;
+ break;
+ case Asub:
+ accum = argnum ? accum - next : nargs == 1 ? - next : next;
+ break;
+ case Amult:
+ accum *= next;
+ break;
+ case Adiv:
+ if (!argnum)
+ accum = next;
+ else
+ {
+ if (! IEEE_FLOATING_POINT && next == 0)
+ Fsignal (Qarith_error, Qnil);
+ accum /= next;
+ }
+ break;
+ case Alogand:
+ case Alogior:
+ case Alogxor:
+ return wrong_type_argument (Qinteger_or_marker_p, val);
+ case Amax:
+ if (!argnum || isnan (next) || next > accum)
+ accum = next;
+ break;
+ case Amin:
+ if (!argnum || isnan (next) || next < accum)
+ accum = next;
+ break;
+ }
+ }
+
+ return make_float (accum);
+ }
+
+
+ DEFUN ("+", Fplus, Splus, 0, MANY, 0,
+ doc: /* Return sum of any number of arguments, which are numbers or
markers.
+ usage: (+ &rest NUMBERS-OR-MARKERS) */)
+ (nargs, args)
+ int nargs;
+ Lisp_Object *args;
+ {
+ return arith_driver (Aadd, nargs, args);
+ }
+
+ DEFUN ("-", Fminus, Sminus, 0, MANY, 0,
+ doc: /* Negate number or subtract numbers or markers and return the
result.
+ With one arg, negates it. With more than one arg,
+ subtracts all but the first from the first.
+ usage: (- &optional NUMBER-OR-MARKER &rest MORE-NUMBERS-OR-MARKERS) */)
+ (nargs, args)
+ int nargs;
+ Lisp_Object *args;
+ {
+ return arith_driver (Asub, nargs, args);
+ }
+
+ DEFUN ("*", Ftimes, Stimes, 0, MANY, 0,
+ doc: /* Return product of any number of arguments, which are numbers
or markers.
+ usage: (* &rest NUMBERS-OR-MARKERS) */)
+ (nargs, args)
+ int nargs;
+ Lisp_Object *args;
+ {
+ return arith_driver (Amult, nargs, args);
+ }
+
+ DEFUN ("/", Fquo, Squo, 2, MANY, 0,
+ doc: /* Return first argument divided by all the remaining arguments.
+ The arguments must be numbers or markers.
+ usage: (/ DIVIDEND DIVISOR &rest DIVISORS) */)
+ (nargs, args)
+ int nargs;
+ Lisp_Object *args;
+ {
+ int argnum;
+ for (argnum = 2; argnum < nargs; argnum++)
+ if (FLOATP (args[argnum]))
+ return float_arith_driver (0, 0, Adiv, nargs, args);
+ return arith_driver (Adiv, nargs, args);
+ }
+
+ DEFUN ("%", Frem, Srem, 2, 2, 0,
+ doc: /* Return remainder of X divided by Y.
+ Both must be integers or markers. */)
+ (x, y)
+ register Lisp_Object x, y;
+ {
+ Lisp_Object val;
+
+ CHECK_NUMBER_COERCE_MARKER (x);
+ CHECK_NUMBER_COERCE_MARKER (y);
+
+ if (XFASTINT (y) == 0)
+ Fsignal (Qarith_error, Qnil);
+
+ XSETINT (val, XINT (x) % XINT (y));
+ return val;
+ }
+
+ #ifndef HAVE_FMOD
+ double
+ fmod (f1, f2)
+ double f1, f2;
+ {
+ double r = f1;
+
+ if (f2 < 0.0)
+ f2 = -f2;
+
+ /* If the magnitude of the result exceeds that of the divisor, or
+ the sign of the result does not agree with that of the dividend,
+ iterate with the reduced value. This does not yield a
+ particularly accurate result, but at least it will be in the
+ range promised by fmod. */
+ do
+ r -= f2 * floor (r / f2);
+ while (f2 <= (r < 0 ? -r : r) || ((r < 0) != (f1 < 0) && ! isnan (r)));
+
+ return r;
+ }
+ #endif /* ! HAVE_FMOD */
+
+ DEFUN ("mod", Fmod, Smod, 2, 2, 0,
+ doc: /* Return X modulo Y.
+ The result falls between zero (inclusive) and Y (exclusive).
+ Both X and Y must be numbers or markers. */)
+ (x, y)
+ register Lisp_Object x, y;
+ {
+ Lisp_Object val;
+ EMACS_INT i1, i2;
+
+ CHECK_NUMBER_OR_FLOAT_COERCE_MARKER (x);
+ CHECK_NUMBER_OR_FLOAT_COERCE_MARKER (y);
+
+ if (FLOATP (x) || FLOATP (y))
+ return fmod_float (x, y);
+
+ i1 = XINT (x);
+ i2 = XINT (y);
+
+ if (i2 == 0)
+ Fsignal (Qarith_error, Qnil);
+
+ i1 %= i2;
+
+ /* If the "remainder" comes out with the wrong sign, fix it. */
+ if (i2 < 0 ? i1 > 0 : i1 < 0)
+ i1 += i2;
+
+ XSETINT (val, i1);
+ return val;
+ }
+
+ DEFUN ("max", Fmax, Smax, 1, MANY, 0,
+ doc: /* Return largest of all the arguments (which must be numbers or
markers).
+ The value is always a number; markers are converted to numbers.
+ usage: (max NUMBER-OR-MARKER &rest NUMBERS-OR-MARKERS) */)
+ (nargs, args)
+ int nargs;
+ Lisp_Object *args;
+ {
+ return arith_driver (Amax, nargs, args);
+ }
+
+ DEFUN ("min", Fmin, Smin, 1, MANY, 0,
+ doc: /* Return smallest of all the arguments (which must be numbers or
markers).
+ The value is always a number; markers are converted to numbers.
+ usage: (min NUMBER-OR-MARKER &rest NUMBERS-OR-MARKERS) */)
+ (nargs, args)
+ int nargs;
+ Lisp_Object *args;
+ {
+ return arith_driver (Amin, nargs, args);
+ }
+
+ DEFUN ("logand", Flogand, Slogand, 0, MANY, 0,
+ doc: /* Return bitwise-and of all the arguments.
+ Arguments may be integers, or markers converted to integers.
+ usage: (logand &rest INTS-OR-MARKERS) */)
+ (nargs, args)
+ int nargs;
+ Lisp_Object *args;
+ {
+ return arith_driver (Alogand, nargs, args);
+ }
+
+ DEFUN ("logior", Flogior, Slogior, 0, MANY, 0,
+ doc: /* Return bitwise-or of all the arguments.
+ Arguments may be integers, or markers converted to integers.
+ usage: (logior &rest INTS-OR-MARKERS) */)
+ (nargs, args)
+ int nargs;
+ Lisp_Object *args;
+ {
+ return arith_driver (Alogior, nargs, args);
+ }
+
+ DEFUN ("logxor", Flogxor, Slogxor, 0, MANY, 0,
+ doc: /* Return bitwise-exclusive-or of all the arguments.
+ Arguments may be integers, or markers converted to integers.
+ usage: (logxor &rest INTS-OR-MARKERS) */)
+ (nargs, args)
+ int nargs;
+ Lisp_Object *args;
+ {
+ return arith_driver (Alogxor, nargs, args);
+ }
+
+ DEFUN ("ash", Fash, Sash, 2, 2, 0,
+ doc: /* Return VALUE with its bits shifted left by COUNT.
+ If COUNT is negative, shifting is actually to the right.
+ In this case, the sign bit is duplicated. */)
+ (value, count)
+ register Lisp_Object value, count;
+ {
+ register Lisp_Object val;
+
+ CHECK_NUMBER (value);
+ CHECK_NUMBER (count);
+
+ if (XINT (count) >= BITS_PER_EMACS_INT)
+ XSETINT (val, 0);
+ else if (XINT (count) > 0)
+ XSETINT (val, XINT (value) << XFASTINT (count));
+ else if (XINT (count) <= -BITS_PER_EMACS_INT)
+ XSETINT (val, XINT (value) < 0 ? -1 : 0);
+ else
+ XSETINT (val, XINT (value) >> -XINT (count));
+ return val;
+ }
+
+ DEFUN ("lsh", Flsh, Slsh, 2, 2, 0,
+ doc: /* Return VALUE with its bits shifted left by COUNT.
+ If COUNT is negative, shifting is actually to the right.
+ In this case, zeros are shifted in on the left. */)
+ (value, count)
+ register Lisp_Object value, count;
+ {
+ register Lisp_Object val;
+
+ CHECK_NUMBER (value);
+ CHECK_NUMBER (count);
+
+ if (XINT (count) >= BITS_PER_EMACS_INT)
+ XSETINT (val, 0);
+ else if (XINT (count) > 0)
+ XSETINT (val, (EMACS_UINT) XUINT (value) << XFASTINT (count));
+ else if (XINT (count) <= -BITS_PER_EMACS_INT)
+ XSETINT (val, 0);
+ else
+ XSETINT (val, (EMACS_UINT) XUINT (value) >> -XINT (count));
+ return val;
+ }
+
+ DEFUN ("1+", Fadd1, Sadd1, 1, 1, 0,
+ doc: /* Return NUMBER plus one. NUMBER may be a number or a marker.
+ Markers are converted to integers. */)
+ (number)
+ register Lisp_Object number;
+ {
+ CHECK_NUMBER_OR_FLOAT_COERCE_MARKER (number);
+
+ if (FLOATP (number))
+ return (make_float (1.0 + XFLOAT_DATA (number)));
+
+ XSETINT (number, XINT (number) + 1);
+ return number;
+ }
+
+ DEFUN ("1-", Fsub1, Ssub1, 1, 1, 0,
+ doc: /* Return NUMBER minus one. NUMBER may be a number or a marker.
+ Markers are converted to integers. */)
+ (number)
+ register Lisp_Object number;
+ {
+ CHECK_NUMBER_OR_FLOAT_COERCE_MARKER (number);
+
+ if (FLOATP (number))
+ return (make_float (-1.0 + XFLOAT_DATA (number)));
+
+ XSETINT (number, XINT (number) - 1);
+ return number;
+ }
+
+ DEFUN ("lognot", Flognot, Slognot, 1, 1, 0,
+ doc: /* Return the bitwise complement of NUMBER. NUMBER must be an
integer. */)
+ (number)
+ register Lisp_Object number;
+ {
+ CHECK_NUMBER (number);
+ XSETINT (number, ~XINT (number));
+ return number;
+ }
+
+ DEFUN ("byteorder", Fbyteorder, Sbyteorder, 0, 0, 0,
+ doc: /* Return the byteorder for the machine.
+ Returns 66 (ASCII uppercase B) for big endian machines or 108 (ASCII
+ lowercase l) for small endian machines. */)
+ ()
+ {
+ unsigned i = 0x04030201;
+ int order = *(char *)&i == 1 ? 108 : 66;
+
+ return make_number (order);
+ }
+
+
+
+ void
+ syms_of_data ()
+ {
+ Lisp_Object error_tail, arith_tail;
+
+ Qquote = intern ("quote");
+ Qlambda = intern ("lambda");
+ Qsubr = intern ("subr");
+ Qerror_conditions = intern ("error-conditions");
+ Qerror_message = intern ("error-message");
+ Qtop_level = intern ("top-level");
+
+ Qerror = intern ("error");
+ Qquit = intern ("quit");
+ Qwrong_type_argument = intern ("wrong-type-argument");
+ Qargs_out_of_range = intern ("args-out-of-range");
+ Qvoid_function = intern ("void-function");
+ Qcyclic_function_indirection = intern ("cyclic-function-indirection");
+ Qcyclic_variable_indirection = intern ("cyclic-variable-indirection");
+ Qvoid_variable = intern ("void-variable");
+ Qsetting_constant = intern ("setting-constant");
+ Qinvalid_read_syntax = intern ("invalid-read-syntax");
+
+ Qinvalid_function = intern ("invalid-function");
+ Qwrong_number_of_arguments = intern ("wrong-number-of-arguments");
+ Qno_catch = intern ("no-catch");
+ Qend_of_file = intern ("end-of-file");
+ Qarith_error = intern ("arith-error");
+ Qbeginning_of_buffer = intern ("beginning-of-buffer");
+ Qend_of_buffer = intern ("end-of-buffer");
+ Qbuffer_read_only = intern ("buffer-read-only");
+ Qtext_read_only = intern ("text-read-only");
+ Qmark_inactive = intern ("mark-inactive");
+
+ Qlistp = intern ("listp");
+ Qconsp = intern ("consp");
+ Qsymbolp = intern ("symbolp");
+ Qkeywordp = intern ("keywordp");
+ Qintegerp = intern ("integerp");
+ Qnatnump = intern ("natnump");
+ Qwholenump = intern ("wholenump");
+ Qstringp = intern ("stringp");
+ Qarrayp = intern ("arrayp");
+ Qsequencep = intern ("sequencep");
+ Qbufferp = intern ("bufferp");
+ Qvectorp = intern ("vectorp");
+ Qchar_or_string_p = intern ("char-or-string-p");
+ Qmarkerp = intern ("markerp");
+ Qbuffer_or_string_p = intern ("buffer-or-string-p");
+ Qinteger_or_marker_p = intern ("integer-or-marker-p");
+ Qboundp = intern ("boundp");
+ Qfboundp = intern ("fboundp");
+
+ Qfloatp = intern ("floatp");
+ Qnumberp = intern ("numberp");
+ Qnumber_or_marker_p = intern ("number-or-marker-p");
+
+ Qchar_table_p = intern ("char-table-p");
+ Qvector_or_char_table_p = intern ("vector-or-char-table-p");
+
+ Qsubrp = intern ("subrp");
+ Qunevalled = intern ("unevalled");
+ Qmany = intern ("many");
+
+ Qcdr = intern ("cdr");
+
+ /* Handle automatic advice activation */
+ Qad_advice_info = intern ("ad-advice-info");
+ Qad_activate_internal = intern ("ad-activate-internal");
+
+ error_tail = Fcons (Qerror, Qnil);
+
+ /* ERROR is used as a signaler for random errors for which nothing else is
right */
+
+ Fput (Qerror, Qerror_conditions,
+ error_tail);
+ Fput (Qerror, Qerror_message,
+ build_string ("error"));
+
+ Fput (Qquit, Qerror_conditions,
+ Fcons (Qquit, Qnil));
+ Fput (Qquit, Qerror_message,
+ build_string ("Quit"));
+
+ Fput (Qwrong_type_argument, Qerror_conditions,
+ Fcons (Qwrong_type_argument, error_tail));
+ Fput (Qwrong_type_argument, Qerror_message,
+ build_string ("Wrong type argument"));
+
+ Fput (Qargs_out_of_range, Qerror_conditions,
+ Fcons (Qargs_out_of_range, error_tail));
+ Fput (Qargs_out_of_range, Qerror_message,
+ build_string ("Args out of range"));
+
+ Fput (Qvoid_function, Qerror_conditions,
+ Fcons (Qvoid_function, error_tail));
+ Fput (Qvoid_function, Qerror_message,
+ build_string ("Symbol's function definition is void"));
+
+ Fput (Qcyclic_function_indirection, Qerror_conditions,
+ Fcons (Qcyclic_function_indirection, error_tail));
+ Fput (Qcyclic_function_indirection, Qerror_message,
+ build_string ("Symbol's chain of function indirections contains a
loop"));
+
+ Fput (Qcyclic_variable_indirection, Qerror_conditions,
+ Fcons (Qcyclic_variable_indirection, error_tail));
+ Fput (Qcyclic_variable_indirection, Qerror_message,
+ build_string ("Symbol's chain of variable indirections contains a
loop"));
+
+ Qcircular_list = intern ("circular-list");
+ staticpro (&Qcircular_list);
+ Fput (Qcircular_list, Qerror_conditions,
+ Fcons (Qcircular_list, error_tail));
+ Fput (Qcircular_list, Qerror_message,
+ build_string ("List contains a loop"));
+
+ Fput (Qvoid_variable, Qerror_conditions,
+ Fcons (Qvoid_variable, error_tail));
+ Fput (Qvoid_variable, Qerror_message,
+ build_string ("Symbol's value as variable is void"));
+
+ Fput (Qsetting_constant, Qerror_conditions,
+ Fcons (Qsetting_constant, error_tail));
+ Fput (Qsetting_constant, Qerror_message,
+ build_string ("Attempt to set a constant symbol"));
+
+ Fput (Qinvalid_read_syntax, Qerror_conditions,
+ Fcons (Qinvalid_read_syntax, error_tail));
+ Fput (Qinvalid_read_syntax, Qerror_message,
+ build_string ("Invalid read syntax"));
+
+ Fput (Qinvalid_function, Qerror_conditions,
+ Fcons (Qinvalid_function, error_tail));
+ Fput (Qinvalid_function, Qerror_message,
+ build_string ("Invalid function"));
+
+ Fput (Qwrong_number_of_arguments, Qerror_conditions,
+ Fcons (Qwrong_number_of_arguments, error_tail));
+ Fput (Qwrong_number_of_arguments, Qerror_message,
+ build_string ("Wrong number of arguments"));
+
+ Fput (Qno_catch, Qerror_conditions,
+ Fcons (Qno_catch, error_tail));
+ Fput (Qno_catch, Qerror_message,
+ build_string ("No catch for tag"));
+
+ Fput (Qend_of_file, Qerror_conditions,
+ Fcons (Qend_of_file, error_tail));
+ Fput (Qend_of_file, Qerror_message,
+ build_string ("End of file during parsing"));
+
+ arith_tail = Fcons (Qarith_error, error_tail);
+ Fput (Qarith_error, Qerror_conditions,
+ arith_tail);
+ Fput (Qarith_error, Qerror_message,
+ build_string ("Arithmetic error"));
+
+ Fput (Qbeginning_of_buffer, Qerror_conditions,
+ Fcons (Qbeginning_of_buffer, error_tail));
+ Fput (Qbeginning_of_buffer, Qerror_message,
+ build_string ("Beginning of buffer"));
+
+ Fput (Qend_of_buffer, Qerror_conditions,
+ Fcons (Qend_of_buffer, error_tail));
+ Fput (Qend_of_buffer, Qerror_message,
+ build_string ("End of buffer"));
+
+ Fput (Qbuffer_read_only, Qerror_conditions,
+ Fcons (Qbuffer_read_only, error_tail));
+ Fput (Qbuffer_read_only, Qerror_message,
+ build_string ("Buffer is read-only"));
+
+ Fput (Qtext_read_only, Qerror_conditions,
+ Fcons (Qtext_read_only, error_tail));
+ Fput (Qtext_read_only, Qerror_message,
+ build_string ("Text is read-only"));
+
+ Qrange_error = intern ("range-error");
+ Qdomain_error = intern ("domain-error");
+ Qsingularity_error = intern ("singularity-error");
+ Qoverflow_error = intern ("overflow-error");
+ Qunderflow_error = intern ("underflow-error");
+
+ Fput (Qdomain_error, Qerror_conditions,
+ Fcons (Qdomain_error, arith_tail));
+ Fput (Qdomain_error, Qerror_message,
+ build_string ("Arithmetic domain error"));
+
+ Fput (Qrange_error, Qerror_conditions,
+ Fcons (Qrange_error, arith_tail));
+ Fput (Qrange_error, Qerror_message,
+ build_string ("Arithmetic range error"));
+
+ Fput (Qsingularity_error, Qerror_conditions,
+ Fcons (Qsingularity_error, Fcons (Qdomain_error, arith_tail)));
+ Fput (Qsingularity_error, Qerror_message,
+ build_string ("Arithmetic singularity error"));
+
+ Fput (Qoverflow_error, Qerror_conditions,
+ Fcons (Qoverflow_error, Fcons (Qdomain_error, arith_tail)));
+ Fput (Qoverflow_error, Qerror_message,
+ build_string ("Arithmetic overflow error"));
+
+ Fput (Qunderflow_error, Qerror_conditions,
+ Fcons (Qunderflow_error, Fcons (Qdomain_error, arith_tail)));
+ Fput (Qunderflow_error, Qerror_message,
+ build_string ("Arithmetic underflow error"));
+
+ staticpro (&Qrange_error);
+ staticpro (&Qdomain_error);
+ staticpro (&Qsingularity_error);
+ staticpro (&Qoverflow_error);
+ staticpro (&Qunderflow_error);
+
+ staticpro (&Qnil);
+ staticpro (&Qt);
+ staticpro (&Qquote);
+ staticpro (&Qlambda);
+ staticpro (&Qsubr);
+ staticpro (&Qunbound);
+ staticpro (&Qerror_conditions);
+ staticpro (&Qerror_message);
+ staticpro (&Qtop_level);
+
+ staticpro (&Qerror);
+ staticpro (&Qquit);
+ staticpro (&Qwrong_type_argument);
+ staticpro (&Qargs_out_of_range);
+ staticpro (&Qvoid_function);
+ staticpro (&Qcyclic_function_indirection);
+ staticpro (&Qvoid_variable);
+ staticpro (&Qsetting_constant);
+ staticpro (&Qinvalid_read_syntax);
+ staticpro (&Qwrong_number_of_arguments);
+ staticpro (&Qinvalid_function);
+ staticpro (&Qno_catch);
+ staticpro (&Qend_of_file);
+ staticpro (&Qarith_error);
+ staticpro (&Qbeginning_of_buffer);
+ staticpro (&Qend_of_buffer);
+ staticpro (&Qbuffer_read_only);
+ staticpro (&Qtext_read_only);
+ staticpro (&Qmark_inactive);
+
+ staticpro (&Qlistp);
+ staticpro (&Qconsp);
+ staticpro (&Qsymbolp);
+ staticpro (&Qkeywordp);
+ staticpro (&Qintegerp);
+ staticpro (&Qnatnump);
+ staticpro (&Qwholenump);
+ staticpro (&Qstringp);
+ staticpro (&Qarrayp);
+ staticpro (&Qsequencep);
+ staticpro (&Qbufferp);
+ staticpro (&Qvectorp);
+ staticpro (&Qchar_or_string_p);
+ staticpro (&Qmarkerp);
+ staticpro (&Qbuffer_or_string_p);
+ staticpro (&Qinteger_or_marker_p);
+ staticpro (&Qfloatp);
+ staticpro (&Qnumberp);
+ staticpro (&Qnumber_or_marker_p);
+ staticpro (&Qchar_table_p);
+ staticpro (&Qvector_or_char_table_p);
+ staticpro (&Qsubrp);
+ staticpro (&Qmany);
+ staticpro (&Qunevalled);
+
+ staticpro (&Qboundp);
+ staticpro (&Qfboundp);
+ staticpro (&Qcdr);
+ staticpro (&Qad_advice_info);
+ staticpro (&Qad_activate_internal);
+
+ /* Types that type-of returns. */
+ Qinteger = intern ("integer");
+ Qsymbol = intern ("symbol");
+ Qstring = intern ("string");
+ Qcons = intern ("cons");
+ Qmarker = intern ("marker");
+ Qoverlay = intern ("overlay");
+ Qfloat = intern ("float");
+ Qwindow_configuration = intern ("window-configuration");
+ Qprocess = intern ("process");
+ Qwindow = intern ("window");
+ /* Qsubr = intern ("subr"); */
+ Qcompiled_function = intern ("compiled-function");
+ Qbuffer = intern ("buffer");
+ Qframe = intern ("frame");
+ Qvector = intern ("vector");
+ Qchar_table = intern ("char-table");
+ Qbool_vector = intern ("bool-vector");
+ Qhash_table = intern ("hash-table");
+
+ staticpro (&Qinteger);
+ staticpro (&Qsymbol);
+ staticpro (&Qstring);
+ staticpro (&Qcons);
+ staticpro (&Qmarker);
+ staticpro (&Qoverlay);
+ staticpro (&Qfloat);
+ staticpro (&Qwindow_configuration);
+ staticpro (&Qprocess);
+ staticpro (&Qwindow);
+ /* staticpro (&Qsubr); */
+ staticpro (&Qcompiled_function);
+ staticpro (&Qbuffer);
+ staticpro (&Qframe);
+ staticpro (&Qvector);
+ staticpro (&Qchar_table);
+ staticpro (&Qbool_vector);
+ staticpro (&Qhash_table);
+
+ defsubr (&Sindirect_variable);
+ defsubr (&Sinteractive_form);
+ defsubr (&Seq);
+ defsubr (&Snull);
+ defsubr (&Stype_of);
+ defsubr (&Slistp);
+ defsubr (&Snlistp);
+ defsubr (&Sconsp);
+ defsubr (&Satom);
+ defsubr (&Sintegerp);
+ defsubr (&Sinteger_or_marker_p);
+ defsubr (&Snumberp);
+ defsubr (&Snumber_or_marker_p);
+ defsubr (&Sfloatp);
+ defsubr (&Snatnump);
+ defsubr (&Ssymbolp);
+ defsubr (&Skeywordp);
+ defsubr (&Sstringp);
+ defsubr (&Smultibyte_string_p);
+ defsubr (&Svectorp);
+ defsubr (&Schar_table_p);
+ defsubr (&Svector_or_char_table_p);
+ defsubr (&Sbool_vector_p);
+ defsubr (&Sarrayp);
+ defsubr (&Ssequencep);
+ defsubr (&Sbufferp);
+ defsubr (&Smarkerp);
+ defsubr (&Ssubrp);
+ defsubr (&Sbyte_code_function_p);
+ defsubr (&Schar_or_string_p);
+ defsubr (&Scar);
+ defsubr (&Scdr);
+ defsubr (&Scar_safe);
+ defsubr (&Scdr_safe);
+ defsubr (&Ssetcar);
+ defsubr (&Ssetcdr);
+ defsubr (&Ssymbol_function);
+ defsubr (&Sindirect_function);
+ defsubr (&Ssymbol_plist);
+ defsubr (&Ssymbol_name);
+ defsubr (&Smakunbound);
+ defsubr (&Sfmakunbound);
+ defsubr (&Sboundp);
+ defsubr (&Sfboundp);
+ defsubr (&Sfset);
+ defsubr (&Sdefalias);
+ defsubr (&Ssetplist);
+ defsubr (&Ssymbol_value);
+ defsubr (&Sset);
+ defsubr (&Sdefault_boundp);
+ defsubr (&Sdefault_value);
+ defsubr (&Sset_default);
+ defsubr (&Ssetq_default);
+ defsubr (&Smake_variable_buffer_local);
+ defsubr (&Smake_local_variable);
+ defsubr (&Skill_local_variable);
+ defsubr (&Smake_variable_frame_local);
+ defsubr (&Slocal_variable_p);
+ defsubr (&Slocal_variable_if_set_p);
+ defsubr (&Svariable_binding_locus);
+ defsubr (&Saref);
+ defsubr (&Saset);
+ defsubr (&Snumber_to_string);
+ defsubr (&Sstring_to_number);
+ defsubr (&Seqlsign);
+ defsubr (&Slss);
+ defsubr (&Sgtr);
+ defsubr (&Sleq);
+ defsubr (&Sgeq);
+ defsubr (&Sneq);
+ defsubr (&Szerop);
+ defsubr (&Splus);
+ defsubr (&Sminus);
+ defsubr (&Stimes);
+ defsubr (&Squo);
+ defsubr (&Srem);
+ defsubr (&Smod);
+ defsubr (&Smax);
+ defsubr (&Smin);
+ defsubr (&Slogand);
+ defsubr (&Slogior);
+ defsubr (&Slogxor);
+ defsubr (&Slsh);
+ defsubr (&Sash);
+ defsubr (&Sadd1);
+ defsubr (&Ssub1);
+ defsubr (&Slognot);
+ defsubr (&Sbyteorder);
+ defsubr (&Ssubr_arity);
+ defsubr (&Ssubr_name);
+
+ XSYMBOL (Qwholenump)->function = XSYMBOL (Qnatnump)->function;
+
+ DEFVAR_LISP ("most-positive-fixnum", &Vmost_positive_fixnum,
+ doc: /* The largest value that is representable in a Lisp
integer. */);
+ Vmost_positive_fixnum = make_number (MOST_POSITIVE_FIXNUM);
+
+ DEFVAR_LISP ("most-negative-fixnum", &Vmost_negative_fixnum,
+ doc: /* The smallest value that is representable in a Lisp
integer. */);
+ Vmost_negative_fixnum = make_number (MOST_NEGATIVE_FIXNUM);
+ }
+
+ SIGTYPE
+ arith_error (signo)
+ int signo;
+ {
+ #if defined(USG) && !defined(POSIX_SIGNALS)
+ /* USG systems forget handlers when they are used;
+ must reestablish each time */
+ signal (signo, arith_error);
+ #endif /* USG */
+ #ifdef VMS
+ /* VMS systems are like USG. */
+ signal (signo, arith_error);
+ #endif /* VMS */
+ #ifdef BSD4_1
+ sigrelse (SIGFPE);
+ #else /* not BSD4_1 */
+ sigsetmask (SIGEMPTYMASK);
+ #endif /* not BSD4_1 */
+
+ Fsignal (Qarith_error, Qnil);
+ }
+
+ void
+ init_data ()
+ {
+ /* Don't do this if just dumping out.
+ We don't want to call `signal' in this case
+ so that we don't have trouble with dumping
+ signal-delivering routines in an inconsistent state. */
+ #ifndef CANNOT_DUMP
+ if (!initialized)
+ return;
+ #endif /* CANNOT_DUMP */
+ signal (SIGFPE, arith_error);
+
+ #ifdef uts
+ signal (SIGEMT, arith_error);
+ #endif /* uts */
+ }
+
+ /* arch-tag: 25879798-b84d-479a-9c89-7d148e2109f7
+ (do not change this comment) */
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