2 dnl Copyright (C) 2007-2011 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 expf expl fabsf floorf floorl fmodf
44 ldexpf ldexpl logb logf logl log10f modff
45 round roundf roundl sinl sqrtf sqrtl
46 tanl trunc truncf truncl])
49 AC_DEFUN([gl_MATH_MODULE_INDICATOR],
51 dnl Use AC_REQUIRE here, so that the default settings are expanded once only.
52 AC_REQUIRE([gl_MATH_H_DEFAULTS])
53 gl_MODULE_INDICATOR_SET_VARIABLE([$1])
54 dnl Define it also as a C macro, for the benefit of the unit tests.
55 gl_MODULE_INDICATOR_FOR_TESTS([$1])
58 AC_DEFUN([gl_MATH_H_DEFAULTS],
60 GNULIB_ACOSL=0; AC_SUBST([GNULIB_ACOSL])
61 GNULIB_ASINL=0; AC_SUBST([GNULIB_ASINL])
62 GNULIB_ATANL=0; AC_SUBST([GNULIB_ATANL])
63 GNULIB_CEIL=0; AC_SUBST([GNULIB_CEIL])
64 GNULIB_CEILF=0; AC_SUBST([GNULIB_CEILF])
65 GNULIB_CEILL=0; AC_SUBST([GNULIB_CEILL])
66 GNULIB_COSL=0; AC_SUBST([GNULIB_COSL])
67 GNULIB_EXPF=0; AC_SUBST([GNULIB_EXPF])
68 GNULIB_EXPL=0; AC_SUBST([GNULIB_EXPL])
69 GNULIB_FABSF=0; AC_SUBST([GNULIB_FABSF])
70 GNULIB_FLOOR=0; AC_SUBST([GNULIB_FLOOR])
71 GNULIB_FLOORF=0; AC_SUBST([GNULIB_FLOORF])
72 GNULIB_FLOORL=0; AC_SUBST([GNULIB_FLOORL])
73 GNULIB_FMODF=0; AC_SUBST([GNULIB_FMODF])
74 GNULIB_FREXPF=0; AC_SUBST([GNULIB_FREXPF])
75 GNULIB_FREXP=0; AC_SUBST([GNULIB_FREXP])
76 GNULIB_FREXPL=0; AC_SUBST([GNULIB_FREXPL])
77 GNULIB_ISFINITE=0; AC_SUBST([GNULIB_ISFINITE])
78 GNULIB_ISINF=0; AC_SUBST([GNULIB_ISINF])
79 GNULIB_ISNAN=0; AC_SUBST([GNULIB_ISNAN])
80 GNULIB_ISNANF=0; AC_SUBST([GNULIB_ISNANF])
81 GNULIB_ISNAND=0; AC_SUBST([GNULIB_ISNAND])
82 GNULIB_ISNANL=0; AC_SUBST([GNULIB_ISNANL])
83 GNULIB_LDEXPF=0; AC_SUBST([GNULIB_LDEXPF])
84 GNULIB_LDEXPL=0; AC_SUBST([GNULIB_LDEXPL])
85 GNULIB_LOGB=0; AC_SUBST([GNULIB_LOGB])
86 GNULIB_LOGF=0; AC_SUBST([GNULIB_LOGF])
87 GNULIB_LOGL=0; AC_SUBST([GNULIB_LOGL])
88 GNULIB_LOG10F=0; AC_SUBST([GNULIB_LOG10F])
89 GNULIB_MODFF=0; AC_SUBST([GNULIB_MODFF])
90 GNULIB_ROUND=0; AC_SUBST([GNULIB_ROUND])
91 GNULIB_ROUNDF=0; AC_SUBST([GNULIB_ROUNDF])
92 GNULIB_ROUNDL=0; AC_SUBST([GNULIB_ROUNDL])
93 GNULIB_SIGNBIT=0; AC_SUBST([GNULIB_SIGNBIT])
94 GNULIB_SINL=0; AC_SUBST([GNULIB_SINL])
95 GNULIB_SQRTF=0; AC_SUBST([GNULIB_SQRTF])
96 GNULIB_SQRTL=0; AC_SUBST([GNULIB_SQRTL])
97 GNULIB_TANL=0; AC_SUBST([GNULIB_TANL])
98 GNULIB_TRUNC=0; AC_SUBST([GNULIB_TRUNC])
99 GNULIB_TRUNCF=0; AC_SUBST([GNULIB_TRUNCF])
100 GNULIB_TRUNCL=0; AC_SUBST([GNULIB_TRUNCL])
101 dnl Assume proper GNU behavior unless another module says otherwise.
102 HAVE_ACOSL=1; AC_SUBST([HAVE_ACOSL])
103 HAVE_ASINL=1; AC_SUBST([HAVE_ASINL])
104 HAVE_ATANL=1; AC_SUBST([HAVE_ATANL])
105 HAVE_COSL=1; AC_SUBST([HAVE_COSL])
106 HAVE_EXPF=1; AC_SUBST([HAVE_EXPF])
107 HAVE_EXPL=1; AC_SUBST([HAVE_EXPL])
108 HAVE_FABSF=1; AC_SUBST([HAVE_FABSF])
109 HAVE_FMODF=1; AC_SUBST([HAVE_FMODF])
110 HAVE_FREXPF=1; AC_SUBST([HAVE_FREXPF])
111 HAVE_ISNANF=1; AC_SUBST([HAVE_ISNANF])
112 HAVE_ISNAND=1; AC_SUBST([HAVE_ISNAND])
113 HAVE_ISNANL=1; AC_SUBST([HAVE_ISNANL])
114 HAVE_LDEXPF=1; AC_SUBST([HAVE_LDEXPF])
115 HAVE_LOGF=1; AC_SUBST([HAVE_LOGF])
116 HAVE_LOGL=1; AC_SUBST([HAVE_LOGL])
117 HAVE_LOG10F=1; AC_SUBST([HAVE_LOG10F])
118 HAVE_MODFF=1; AC_SUBST([HAVE_MODFF])
119 HAVE_SINL=1; AC_SUBST([HAVE_SINL])
120 HAVE_SQRTF=1; AC_SUBST([HAVE_SQRTF])
121 HAVE_SQRTL=1; AC_SUBST([HAVE_SQRTL])
122 HAVE_TANL=1; AC_SUBST([HAVE_TANL])
123 HAVE_DECL_ACOSL=1; AC_SUBST([HAVE_DECL_ACOSL])
124 HAVE_DECL_ASINL=1; AC_SUBST([HAVE_DECL_ASINL])
125 HAVE_DECL_ATANL=1; AC_SUBST([HAVE_DECL_ATANL])
126 HAVE_DECL_CEILF=1; AC_SUBST([HAVE_DECL_CEILF])
127 HAVE_DECL_CEILL=1; AC_SUBST([HAVE_DECL_CEILL])
128 HAVE_DECL_COSL=1; AC_SUBST([HAVE_DECL_COSL])
129 HAVE_DECL_EXPL=1; AC_SUBST([HAVE_DECL_EXPL])
130 HAVE_DECL_FLOORF=1; AC_SUBST([HAVE_DECL_FLOORF])
131 HAVE_DECL_FLOORL=1; AC_SUBST([HAVE_DECL_FLOORL])
132 HAVE_DECL_FREXPL=1; AC_SUBST([HAVE_DECL_FREXPL])
133 HAVE_DECL_LDEXPL=1; AC_SUBST([HAVE_DECL_LDEXPL])
134 HAVE_DECL_LOGB=1; AC_SUBST([HAVE_DECL_LOGB])
135 HAVE_DECL_LOGL=1; AC_SUBST([HAVE_DECL_LOGL])
136 HAVE_DECL_ROUND=1; AC_SUBST([HAVE_DECL_ROUND])
137 HAVE_DECL_ROUNDF=1; AC_SUBST([HAVE_DECL_ROUNDF])
138 HAVE_DECL_ROUNDL=1; AC_SUBST([HAVE_DECL_ROUNDL])
139 HAVE_DECL_SINL=1; AC_SUBST([HAVE_DECL_SINL])
140 HAVE_DECL_SQRTL=1; AC_SUBST([HAVE_DECL_SQRTL])
141 HAVE_DECL_TANL=1; AC_SUBST([HAVE_DECL_TANL])
142 HAVE_DECL_TRUNC=1; AC_SUBST([HAVE_DECL_TRUNC])
143 HAVE_DECL_TRUNCF=1; AC_SUBST([HAVE_DECL_TRUNCF])
144 HAVE_DECL_TRUNCL=1; AC_SUBST([HAVE_DECL_TRUNCL])
145 REPLACE_CEIL=0; AC_SUBST([REPLACE_CEIL])
146 REPLACE_CEILF=0; AC_SUBST([REPLACE_CEILF])
147 REPLACE_CEILL=0; AC_SUBST([REPLACE_CEILL])
148 REPLACE_FLOOR=0; AC_SUBST([REPLACE_FLOOR])
149 REPLACE_FLOORF=0; AC_SUBST([REPLACE_FLOORF])
150 REPLACE_FLOORL=0; AC_SUBST([REPLACE_FLOORL])
151 REPLACE_FREXPF=0; AC_SUBST([REPLACE_FREXPF])
152 REPLACE_FREXP=0; AC_SUBST([REPLACE_FREXP])
153 REPLACE_FREXPL=0; AC_SUBST([REPLACE_FREXPL])
154 REPLACE_HUGE_VAL=0; AC_SUBST([REPLACE_HUGE_VAL])
155 REPLACE_ISFINITE=0; AC_SUBST([REPLACE_ISFINITE])
156 REPLACE_ISINF=0; AC_SUBST([REPLACE_ISINF])
157 REPLACE_ISNAN=0; AC_SUBST([REPLACE_ISNAN])
158 REPLACE_LDEXPL=0; AC_SUBST([REPLACE_LDEXPL])
159 REPLACE_NAN=0; AC_SUBST([REPLACE_NAN])
160 REPLACE_ROUND=0; AC_SUBST([REPLACE_ROUND])
161 REPLACE_ROUNDF=0; AC_SUBST([REPLACE_ROUNDF])
162 REPLACE_ROUNDL=0; AC_SUBST([REPLACE_ROUNDL])
163 REPLACE_SIGNBIT=0; AC_SUBST([REPLACE_SIGNBIT])
164 REPLACE_SIGNBIT_USING_GCC=0; AC_SUBST([REPLACE_SIGNBIT_USING_GCC])
165 REPLACE_TRUNC=0; AC_SUBST([REPLACE_TRUNC])
166 REPLACE_TRUNCF=0; AC_SUBST([REPLACE_TRUNCF])
167 REPLACE_TRUNCL=0; AC_SUBST([REPLACE_TRUNCL])