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test-roundl-ieee failures


From: Bruno Haible
Subject: test-roundl-ieee failures
Date: Sun, 19 Jun 2011 15:06:18 +0200
User-agent: KMail/1.9.9

>       2 x FAIL: test-roundl-ieee

On AIX 7.1:

test-roundl-ieee.c:45: assertion failed
/bin/sh: 9109556 IOT/Abort trap(coredump)
FAIL: test-roundl-ieee

This fixes it:


2011-06-19  Bruno Haible  <address@hidden>

        roundl-ieee: Fix test failure on AIX 7.1.
        * m4/roundl.m4 (gl_FUNC_ROUNDL): Test also the sign of roundl (-0.3L).
        * doc/posix-functions/roundl.texi: Mention problem with negative
        arguments.

--- doc/posix-functions/roundl.texi.orig        Sun Jun 19 15:01:51 2011
+++ doc/posix-functions/roundl.texi     Sun Jun 19 15:01:38 2011
@@ -19,6 +19,10 @@
 Portability problems fixed by Gnulib module @code{roundl-ieee}:
 @itemize
 @item
+This function returns a positive zero for an argument between -0.5 and 0
+on some platforms:
+AIX 7.1.
address@hidden
 This function returns a positive zero for a minus zero argument
 on some platforms:
 OSF/1 5.1.
--- m4/roundl.m4.orig   Sun Jun 19 15:01:51 2011
+++ m4/roundl.m4        Sun Jun 19 14:59:35 2011
@@ -1,4 +1,4 @@
-# roundl.m4 serial 10
+# roundl.m4 serial 11
 dnl Copyright (C) 2007, 2009-2011 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
@@ -35,10 +35,14 @@
 int main (int argc, char *argv[])
 {
   long double (*my_roundl) (long double) = argc ? roundl : dummy;
+  int result = 0;
   /* Test whether roundl (-0.0L) is -0.0L.  */
   if (signbitl (minus_zerol) && !signbitl (my_roundl (minus_zerol)))
-    return 1;
-  return 0;
+    result |= 1;
+  /* Test whether roundl (-0.3L) is -0.0L.  */
+  if (signbitl (-0.3L) && !signbitl (my_roundl (-0.3L)))
+    result |= 2;
+  return result;
 }
               ]])],
               [gl_cv_func_roundl_ieee=yes],


-- 
In memoriam Alois Eliáš <http://en.wikipedia.org/wiki/Alois_Eliáš>



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