[Emacs-diffs] Changes to emacs/lispref/numbers.texi

[Richard M . Stallman]

Index: emacs/lispref/numbers.texi
diff -c emacs/lispref/numbers.texi:1.34 emacs/lispref/numbers.texi:1.35
*** emacs/lispref/numbers.texi:1.34     Mon Feb 14 10:19:36 2005
--- emacs/lispref/numbers.texi  Sat Jun 25 02:29:46 2005
***************
*** 183,203 ****
  NaN.  For practical purposes, there's no significant difference between
  different NaN values in Emacs Lisp, and there's no rule for precisely
  which NaN value should be used in a particular case, so Emacs Lisp
! doesn't try to distinguish them.  Here are the read syntaxes for
! these special floating point values:
  
  @table @asis
  @item positive infinity
  @samp{1.0e+INF}
  @item negative infinity
  @samp{-1.0e+INF}
! @item Not-a-number
! @samp{0.0e+NaN}.
  @end table
  
!   In addition, the value @code{-0.0} is distinguishable from ordinary
! zero in @acronym{IEEE} floating point (although @code{equal} and
! @code{=} consider them equal values).
  
    You can use @code{logb} to extract the binary exponent of a floating
  point number (or estimate the logarithm of an integer):
--- 183,208 ----
  NaN.  For practical purposes, there's no significant difference between
  different NaN values in Emacs Lisp, and there's no rule for precisely
  which NaN value should be used in a particular case, so Emacs Lisp
! doesn't try to distinguish them (but it does report the sign, if you
! print it).  Here are the read syntaxes for these special floating
! point values:
  
  @table @asis
  @item positive infinity
  @samp{1.0e+INF}
  @item negative infinity
  @samp{-1.0e+INF}
! @item Not-a-number 
! @samp{0.0e+NaN} or @samp{-0.0e+NaN}.
  @end table
  
!   To test whether a floating point value is a NaN, compare it with
! itself using @code{=}.  That returns @code{nil} for a NaN, and
! @code{t} for any other floating point value.
! 
!   The value @code{-0.0} is distinguishable from ordinary zero in
! @acronym{IEEE} floating point, but Emacs Lisp @code{equal} and
! @code{=} consider them equal values.
  
    You can use @code{logb} to extract the binary exponent of a floating
  point number (or estimate the logarithm of an integer):