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 powf
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_POWF=0; AC_SUBST([GNULIB_POWF])
91 GNULIB_ROUND=0; AC_SUBST([GNULIB_ROUND])
92 GNULIB_ROUNDF=0; AC_SUBST([GNULIB_ROUNDF])
93 GNULIB_ROUNDL=0; AC_SUBST([GNULIB_ROUNDL])
94 GNULIB_SIGNBIT=0; AC_SUBST([GNULIB_SIGNBIT])
95 GNULIB_SINL=0; AC_SUBST([GNULIB_SINL])
96 GNULIB_SQRTF=0; AC_SUBST([GNULIB_SQRTF])
97 GNULIB_SQRTL=0; AC_SUBST([GNULIB_SQRTL])
98 GNULIB_TANL=0; AC_SUBST([GNULIB_TANL])
99 GNULIB_TRUNC=0; AC_SUBST([GNULIB_TRUNC])
100 GNULIB_TRUNCF=0; AC_SUBST([GNULIB_TRUNCF])
101 GNULIB_TRUNCL=0; AC_SUBST([GNULIB_TRUNCL])
102 dnl Assume proper GNU behavior unless another module says otherwise.
103 HAVE_ACOSL=1; AC_SUBST([HAVE_ACOSL])
104 HAVE_ASINL=1; AC_SUBST([HAVE_ASINL])
105 HAVE_ATANL=1; AC_SUBST([HAVE_ATANL])
106 HAVE_COSL=1; AC_SUBST([HAVE_COSL])
107 HAVE_EXPF=1; AC_SUBST([HAVE_EXPF])
108 HAVE_EXPL=1; AC_SUBST([HAVE_EXPL])
109 HAVE_FABSF=1; AC_SUBST([HAVE_FABSF])
110 HAVE_FMODF=1; AC_SUBST([HAVE_FMODF])
111 HAVE_FREXPF=1; AC_SUBST([HAVE_FREXPF])
112 HAVE_ISNANF=1; AC_SUBST([HAVE_ISNANF])
113 HAVE_ISNAND=1; AC_SUBST([HAVE_ISNAND])
114 HAVE_ISNANL=1; AC_SUBST([HAVE_ISNANL])
115 HAVE_LDEXPF=1; AC_SUBST([HAVE_LDEXPF])
116 HAVE_LOGF=1; AC_SUBST([HAVE_LOGF])
117 HAVE_LOGL=1; AC_SUBST([HAVE_LOGL])
118 HAVE_LOG10F=1; AC_SUBST([HAVE_LOG10F])
119 HAVE_MODFF=1; AC_SUBST([HAVE_MODFF])
120 HAVE_POWF=1; AC_SUBST([HAVE_POWF])
121 HAVE_SINL=1; AC_SUBST([HAVE_SINL])
122 HAVE_SQRTF=1; AC_SUBST([HAVE_SQRTF])
123 HAVE_SQRTL=1; AC_SUBST([HAVE_SQRTL])
124 HAVE_TANL=1; AC_SUBST([HAVE_TANL])
125 HAVE_DECL_ACOSL=1; AC_SUBST([HAVE_DECL_ACOSL])
126 HAVE_DECL_ASINL=1; AC_SUBST([HAVE_DECL_ASINL])
127 HAVE_DECL_ATANL=1; AC_SUBST([HAVE_DECL_ATANL])
128 HAVE_DECL_CEILF=1; AC_SUBST([HAVE_DECL_CEILF])
129 HAVE_DECL_CEILL=1; AC_SUBST([HAVE_DECL_CEILL])
130 HAVE_DECL_COSL=1; AC_SUBST([HAVE_DECL_COSL])
131 HAVE_DECL_EXPL=1; AC_SUBST([HAVE_DECL_EXPL])
132 HAVE_DECL_FLOORF=1; AC_SUBST([HAVE_DECL_FLOORF])
133 HAVE_DECL_FLOORL=1; AC_SUBST([HAVE_DECL_FLOORL])
134 HAVE_DECL_FREXPL=1; AC_SUBST([HAVE_DECL_FREXPL])
135 HAVE_DECL_LDEXPL=1; AC_SUBST([HAVE_DECL_LDEXPL])
136 HAVE_DECL_LOGB=1; AC_SUBST([HAVE_DECL_LOGB])
137 HAVE_DECL_LOGL=1; AC_SUBST([HAVE_DECL_LOGL])
138 HAVE_DECL_ROUND=1; AC_SUBST([HAVE_DECL_ROUND])
139 HAVE_DECL_ROUNDF=1; AC_SUBST([HAVE_DECL_ROUNDF])
140 HAVE_DECL_ROUNDL=1; AC_SUBST([HAVE_DECL_ROUNDL])
141 HAVE_DECL_SINL=1; AC_SUBST([HAVE_DECL_SINL])
142 HAVE_DECL_SQRTL=1; AC_SUBST([HAVE_DECL_SQRTL])
143 HAVE_DECL_TANL=1; AC_SUBST([HAVE_DECL_TANL])
144 HAVE_DECL_TRUNC=1; AC_SUBST([HAVE_DECL_TRUNC])
145 HAVE_DECL_TRUNCF=1; AC_SUBST([HAVE_DECL_TRUNCF])
146 HAVE_DECL_TRUNCL=1; AC_SUBST([HAVE_DECL_TRUNCL])
147 REPLACE_CEIL=0; AC_SUBST([REPLACE_CEIL])
148 REPLACE_CEILF=0; AC_SUBST([REPLACE_CEILF])
149 REPLACE_CEILL=0; AC_SUBST([REPLACE_CEILL])
150 REPLACE_FLOOR=0; AC_SUBST([REPLACE_FLOOR])
151 REPLACE_FLOORF=0; AC_SUBST([REPLACE_FLOORF])
152 REPLACE_FLOORL=0; AC_SUBST([REPLACE_FLOORL])
153 REPLACE_FREXPF=0; AC_SUBST([REPLACE_FREXPF])
154 REPLACE_FREXP=0; AC_SUBST([REPLACE_FREXP])
155 REPLACE_FREXPL=0; AC_SUBST([REPLACE_FREXPL])
156 REPLACE_HUGE_VAL=0; AC_SUBST([REPLACE_HUGE_VAL])
157 REPLACE_ISFINITE=0; AC_SUBST([REPLACE_ISFINITE])
158 REPLACE_ISINF=0; AC_SUBST([REPLACE_ISINF])
159 REPLACE_ISNAN=0; AC_SUBST([REPLACE_ISNAN])
160 REPLACE_LDEXPL=0; AC_SUBST([REPLACE_LDEXPL])
161 REPLACE_NAN=0; AC_SUBST([REPLACE_NAN])
162 REPLACE_ROUND=0; AC_SUBST([REPLACE_ROUND])
163 REPLACE_ROUNDF=0; AC_SUBST([REPLACE_ROUNDF])
164 REPLACE_ROUNDL=0; AC_SUBST([REPLACE_ROUNDL])
165 REPLACE_SIGNBIT=0; AC_SUBST([REPLACE_SIGNBIT])
166 REPLACE_SIGNBIT_USING_GCC=0; AC_SUBST([REPLACE_SIGNBIT_USING_GCC])
167 REPLACE_TRUNC=0; AC_SUBST([REPLACE_TRUNC])
168 REPLACE_TRUNCF=0; AC_SUBST([REPLACE_TRUNCF])
169 REPLACE_TRUNCL=0; AC_SUBST([REPLACE_TRUNCL])