# HG changeset patch
# User Bruno Haible <bruno@clisp.org>
# Date 1181698234 0
# Node ID 188cb0a0b0c5add2725eb5f8e2f686c871824c7b
# Parent  6186374fc70c9528b7d43e829262f441b6ed1933
Guess isnanl does not work when cross-compiling to ia64, x86_64, i386.

diff --git a/ChangeLog b/ChangeLog
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,9 @@
+2007-06-12  Bruno Haible  <bruno@clisp.org>
+
+	* m4/isnanl.m4 (gl_FUNC_ISNANL_WORKS): Guess no when cross-compiling
+	to ia64, x86_64, i386.
+	Reported by Eric Blake.
+
 2007-06-12  Bruno Haible  <bruno@clisp.org>
 
 	* m4/printf.m4 (gl_PRINTF_INFINITE_LONG_DOUBLE): Guess no also when
diff --git a/m4/isnanl.m4 b/m4/isnanl.m4
--- a/m4/isnanl.m4
+++ b/m4/isnanl.m4
@@ -1,4 +1,4 @@
-# isnanl.m4 serial 4
+# isnanl.m4 serial 5
 dnl Copyright (C) 2007 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
@@ -200,9 +200,15 @@
 
   return 0;
 }], [gl_cv_func_isnanl_works=yes], [gl_cv_func_isnanl_works=no],
-      [case "$host_os" in
-         netbsd*) gl_cv_func_isnanl_works="guessing no";;
-         *)       gl_cv_func_isnanl_works="guessing yes";;
+      [case "$host_cpu" in
+                               # Guess no on ia64, x86_64, i386.
+         ia64 | x86_64 | i*86) gl_cv_func_isnanl_works="guessing no";;
+         *)
+           case "$host_os" in
+             netbsd*) gl_cv_func_isnanl_works="guessing no";;
+             *)       gl_cv_func_isnanl_works="guessing yes";;
+           esac
+           ;;
        esac
       ])
     ])