1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
|
# c-strtod.m4 serial 8
# Copyright (C) 2004, 2005, 2006 Free Software Foundation, Inc.
# This file is free software; the Free Software Foundation
# gives unlimited permission to copy and/or distribute it,
# with or without modifications, as long as this notice is preserved.
# Written by Paul Eggert.
AC_DEFUN([gl_C99_STRTOLD],
[
AC_CACHE_CHECK([whether strtold conforms to C99],
[gl_cv_func_c99_strtold],
[AC_LINK_IFELSE(
[AC_LANG_PROGRAM(
[[/* On HP-UX before 11.23, strtold returns a struct instead of
long double. Reject implementations like that, by requiring
compatibility with the C99 prototype. */
#include <stdlib.h>
static long double (*p) (char const *, char **) = strtold;
static long double
test (char const *nptr, char **endptr)
{
long double r;
r = strtold (nptr, endptr);
return r;
}]],
[[return test ("1.0", NULL) != 1 || p ("1.0", NULL) != 1;]])],
[gl_cv_func_c99_strtold=yes],
[gl_cv_func_c99_strtold=no])])
if test $gl_cv_func_c99_strtold = yes; then
AC_DEFINE([HAVE_C99_STRTOLD], 1, [Define to 1 if strtold conforms to C99.])
fi
])
AC_DEFUN([gl_C_STRTOD],
[
AC_LIBSOURCES([c-strtod.c, c-strtod.h])
AC_LIBOBJ([c-strtod])
dnl Prerequisites of lib/c-strtod.c.
AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS])
:
])
AC_DEFUN([gl_C_STRTOLD],
[
AC_LIBSOURCES([c-strtod.c, c-strtold.c, c-strtod.h])
AC_LIBOBJ([c-strtold])
dnl Prerequisites of lib/c-strtold.c.
AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS])
AC_REQUIRE([gl_C99_STRTOLD])
:
])
|
