+2011-10-09 Bruno Haible <bruno@clisp.org>
+
+ isinf: Ensure macro on AIX 5.1.
+ * m4/isinf.m4 (gl_ISINF): Also test whether isinf is defined as a
+ macro.
+ * doc/posix-functions/isinf.texi: Mention also AIX 5.1 as deficient.
+
2011-10-09 Bruno Haible <bruno@clisp.org>
*printf-posix tests: Fix for platforms where 'long double' == 'double'.
@itemize
@item
This macro is missing on some platforms:
-AIX 4.3.2, IRIX 6.5, OSF/1 5.1, Solaris 11 2010-11.
+AIX 5.1, IRIX 6.5, OSF/1 5.1, Solaris 11 2010-11.
@item
This macro incorrectly yields true for some @samp{long double} arguments, on
some platforms:
-# isinf.m4 serial 8
+# isinf.m4 serial 9
dnl Copyright (C) 2007-2011 Free Software Foundation, Inc.
dnl This file is free software; the Free Software Foundation
dnl gives unlimited permission to copy and/or distribute it,
AC_REQUIRE([gl_MATH_H_DEFAULTS])
dnl Persuade glibc <math.h> to declare isinf.
AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS])
- AC_CHECK_DECLS([isinf], , , [[#include <math.h>]])
+ AC_CHECK_DECLS([isinf], , ,
+ [[#include <math.h>
+ #ifndef isinf
+ #error "isinf must be a macro, not a function"
+ #endif
+ ]])
if test "$ac_cv_have_decl_isinf" = yes; then
gl_CHECK_MATH_LIB([ISINF_LIBM], [x = isinf (x) + isinf ((float) x);])
if test "$ISINF_LIBM" != missing; then