2 dnl Copyright (C) 2007-2010 Free Software Foundation, Inc.
3 dnl This file is free software; the Free Software Foundation
4 dnl gives unlimited permission to copy and/or distribute it,
5 dnl with or without modifications, as long as this notice is preserved.
9 AC_REQUIRE([gl_MATH_H_DEFAULTS])
10 gl_CHECK_NEXT_HEADERS([math.h])
11 AC_REQUIRE([AC_C_INLINE])
13 AC_CACHE_CHECK([whether NAN macro works], [gl_cv_header_math_nan_works],
14 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[@%:@include <math.h>]],
15 [[/* Solaris 10 has a broken definition of NAN. Other platforms
16 fail to provide NAN, or provide it only in C99 mode; this
17 test only needs to fail when NAN is provided but wrong. */
23 [gl_cv_header_math_nan_works=yes],
24 [gl_cv_header_math_nan_works=no])])
25 if test $gl_cv_header_math_nan_works = no; then
28 AC_CACHE_CHECK([whether HUGE_VAL works], [gl_cv_header_math_huge_val_works],
29 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[@%:@include <math.h>]],
30 [[/* Solaris 10 has a broken definition of HUGE_VAL. */
33 [gl_cv_header_math_huge_val_works=yes],
34 [gl_cv_header_math_huge_val_works=no])])
35 if test $gl_cv_header_math_huge_val_works = no; then
39 dnl Check for declarations of anything we want to poison if the
40 dnl corresponding gnulib module is not in use.
41 gl_WARN_ON_USE_PREPARE([[#include <math.h>
42 ]], [acosl asinl atanl ceilf ceill cosl expl floorf floorl frexpl
43 ldexpl logl round roundf roundl sinl sqrtl tanl trunc truncf truncl])
46 AC_DEFUN([gl_MATH_MODULE_INDICATOR],
48 dnl Use AC_REQUIRE here, so that the default settings are expanded once only.
49 AC_REQUIRE([gl_MATH_H_DEFAULTS])
50 GNULIB_[]m4_translit([$1],[abcdefghijklmnopqrstuvwxyz./-],[ABCDEFGHIJKLMNOPQRSTUVWXYZ___])=1
53 AC_DEFUN([gl_MATH_H_DEFAULTS],
55 GNULIB_ACOSL=0; AC_SUBST([GNULIB_ACOSL])
56 GNULIB_ASINL=0; AC_SUBST([GNULIB_ASINL])
57 GNULIB_ATANL=0; AC_SUBST([GNULIB_ATANL])
58 GNULIB_CEILF=0; AC_SUBST([GNULIB_CEILF])
59 GNULIB_CEILL=0; AC_SUBST([GNULIB_CEILL])
60 GNULIB_COSL=0; AC_SUBST([GNULIB_COSL])
61 GNULIB_EXPL=0; AC_SUBST([GNULIB_EXPL])
62 GNULIB_FLOORF=0; AC_SUBST([GNULIB_FLOORF])
63 GNULIB_FLOORL=0; AC_SUBST([GNULIB_FLOORL])
64 GNULIB_FREXP=0; AC_SUBST([GNULIB_FREXP])
65 GNULIB_FREXPL=0; AC_SUBST([GNULIB_FREXPL])
66 GNULIB_ISFINITE=0; AC_SUBST([GNULIB_ISFINITE])
67 GNULIB_ISINF=0; AC_SUBST([GNULIB_ISINF])
68 GNULIB_ISNAN=0; AC_SUBST([GNULIB_ISNAN])
69 GNULIB_ISNANF=0; AC_SUBST([GNULIB_ISNANF])
70 GNULIB_ISNAND=0; AC_SUBST([GNULIB_ISNAND])
71 GNULIB_ISNANL=0; AC_SUBST([GNULIB_ISNANL])
72 GNULIB_LDEXPL=0; AC_SUBST([GNULIB_LDEXPL])
73 GNULIB_LOGL=0; AC_SUBST([GNULIB_LOGL])
74 GNULIB_ROUND=0; AC_SUBST([GNULIB_ROUND])
75 GNULIB_ROUNDF=0; AC_SUBST([GNULIB_ROUNDF])
76 GNULIB_ROUNDL=0; AC_SUBST([GNULIB_ROUNDL])
77 GNULIB_SIGNBIT=0; AC_SUBST([GNULIB_SIGNBIT])
78 GNULIB_SINL=0; AC_SUBST([GNULIB_SINL])
79 GNULIB_SQRTL=0; AC_SUBST([GNULIB_SQRTL])
80 GNULIB_TANL=0; AC_SUBST([GNULIB_TANL])
81 GNULIB_TRUNC=0; AC_SUBST([GNULIB_TRUNC])
82 GNULIB_TRUNCF=0; AC_SUBST([GNULIB_TRUNCF])
83 GNULIB_TRUNCL=0; AC_SUBST([GNULIB_TRUNCL])
84 dnl Assume proper GNU behavior unless another module says otherwise.
85 HAVE_ACOSL=1; AC_SUBST([HAVE_ACOSL])
86 HAVE_ASINL=1; AC_SUBST([HAVE_ASINL])
87 HAVE_ATANL=1; AC_SUBST([HAVE_ATANL])
88 HAVE_COSL=1; AC_SUBST([HAVE_COSL])
89 HAVE_EXPL=1; AC_SUBST([HAVE_EXPL])
90 HAVE_ISNANF=1; AC_SUBST([HAVE_ISNANF])
91 HAVE_ISNAND=1; AC_SUBST([HAVE_ISNAND])
92 HAVE_ISNANL=1; AC_SUBST([HAVE_ISNANL])
93 HAVE_LOGL=1; AC_SUBST([HAVE_LOGL])
94 HAVE_SINL=1; AC_SUBST([HAVE_SINL])
95 HAVE_SQRTL=1; AC_SUBST([HAVE_SQRTL])
96 HAVE_TANL=1; AC_SUBST([HAVE_TANL])
97 HAVE_DECL_ACOSL=1; AC_SUBST([HAVE_DECL_ACOSL])
98 HAVE_DECL_ASINL=1; AC_SUBST([HAVE_DECL_ASINL])
99 HAVE_DECL_ATANL=1; AC_SUBST([HAVE_DECL_ATANL])
100 HAVE_DECL_COSL=1; AC_SUBST([HAVE_DECL_COSL])
101 HAVE_DECL_EXPL=1; AC_SUBST([HAVE_DECL_EXPL])
102 HAVE_DECL_FREXPL=1; AC_SUBST([HAVE_DECL_FREXPL])
103 HAVE_DECL_LDEXPL=1; AC_SUBST([HAVE_DECL_LDEXPL])
104 HAVE_DECL_LOGL=1; AC_SUBST([HAVE_DECL_LOGL])
105 HAVE_DECL_SINL=1; AC_SUBST([HAVE_DECL_SINL])
106 HAVE_DECL_SQRTL=1; AC_SUBST([HAVE_DECL_SQRTL])
107 HAVE_DECL_TANL=1; AC_SUBST([HAVE_DECL_TANL])
108 HAVE_DECL_TRUNC=1; AC_SUBST([HAVE_DECL_TRUNC])
109 HAVE_DECL_TRUNCF=1; AC_SUBST([HAVE_DECL_TRUNCF])
110 REPLACE_CEILF=0; AC_SUBST([REPLACE_CEILF])
111 REPLACE_CEILL=0; AC_SUBST([REPLACE_CEILL])
112 REPLACE_FLOORF=0; AC_SUBST([REPLACE_FLOORF])
113 REPLACE_FLOORL=0; AC_SUBST([REPLACE_FLOORL])
114 REPLACE_FREXP=0; AC_SUBST([REPLACE_FREXP])
115 REPLACE_FREXPL=0; AC_SUBST([REPLACE_FREXPL])
116 REPLACE_HUGE_VAL=0; AC_SUBST([REPLACE_HUGE_VAL])
117 REPLACE_ISFINITE=0; AC_SUBST([REPLACE_ISFINITE])
118 REPLACE_ISINF=0; AC_SUBST([REPLACE_ISINF])
119 REPLACE_ISNAN=0; AC_SUBST([REPLACE_ISNAN])
120 REPLACE_LDEXPL=0; AC_SUBST([REPLACE_LDEXPL])
121 REPLACE_NAN=0; AC_SUBST([REPLACE_NAN])
122 REPLACE_ROUND=0; AC_SUBST([REPLACE_ROUND])
123 REPLACE_ROUNDF=0; AC_SUBST([REPLACE_ROUNDF])
124 REPLACE_ROUNDL=0; AC_SUBST([REPLACE_ROUNDL])
125 REPLACE_SIGNBIT=0; AC_SUBST([REPLACE_SIGNBIT])
126 REPLACE_SIGNBIT_USING_GCC=0; AC_SUBST([REPLACE_SIGNBIT_USING_GCC])
127 REPLACE_TRUNCL=0; AC_SUBST([REPLACE_TRUNCL])