2 dnl Copyright (C) 2007-2012 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 [acosf acosl asinf asinl atanf atanl
43 cbrt cbrtf cbrtl ceilf ceill copysign copysignf copysignl cosf cosl coshf
44 expf expl exp2 exp2f exp2l expm1 expm1f expm1l
45 fabsf fabsl floorf floorl fma fmaf fmal
46 fmod fmodf fmodl frexpf frexpl hypotf hypotl
47 ldexpf ldexpl logb log logf logl log10f log10l log1p log1pf log1pl log2
49 remainder remainderf remainderl
50 rint rintf rintl round roundf roundl sinf sinl sinhf sqrtf sqrtl
51 tanf tanl tanhf trunc truncf truncl])
54 AC_DEFUN([gl_MATH_MODULE_INDICATOR],
56 dnl Use AC_REQUIRE here, so that the default settings are expanded once only.
57 AC_REQUIRE([gl_MATH_H_DEFAULTS])
58 gl_MODULE_INDICATOR_SET_VARIABLE([$1])
59 dnl Define it also as a C macro, for the benefit of the unit tests.
60 gl_MODULE_INDICATOR_FOR_TESTS([$1])
63 AC_DEFUN([gl_MATH_H_DEFAULTS],
65 GNULIB_ACOSF=0; AC_SUBST([GNULIB_ACOSF])
66 GNULIB_ACOSL=0; AC_SUBST([GNULIB_ACOSL])
67 GNULIB_ASINF=0; AC_SUBST([GNULIB_ASINF])
68 GNULIB_ASINL=0; AC_SUBST([GNULIB_ASINL])
69 GNULIB_ATANF=0; AC_SUBST([GNULIB_ATANF])
70 GNULIB_ATANL=0; AC_SUBST([GNULIB_ATANL])
71 GNULIB_ATAN2F=0; AC_SUBST([GNULIB_ATAN2F])
72 GNULIB_CBRT=0; AC_SUBST([GNULIB_CBRT])
73 GNULIB_CBRTF=0; AC_SUBST([GNULIB_CBRTF])
74 GNULIB_CBRTL=0; AC_SUBST([GNULIB_CBRTL])
75 GNULIB_CEIL=0; AC_SUBST([GNULIB_CEIL])
76 GNULIB_CEILF=0; AC_SUBST([GNULIB_CEILF])
77 GNULIB_CEILL=0; AC_SUBST([GNULIB_CEILL])
78 GNULIB_COPYSIGN=0; AC_SUBST([GNULIB_COPYSIGN])
79 GNULIB_COPYSIGNF=0; AC_SUBST([GNULIB_COPYSIGNF])
80 GNULIB_COPYSIGNL=0; AC_SUBST([GNULIB_COPYSIGNL])
81 GNULIB_COSF=0; AC_SUBST([GNULIB_COSF])
82 GNULIB_COSL=0; AC_SUBST([GNULIB_COSL])
83 GNULIB_COSHF=0; AC_SUBST([GNULIB_COSHF])
84 GNULIB_EXPF=0; AC_SUBST([GNULIB_EXPF])
85 GNULIB_EXPL=0; AC_SUBST([GNULIB_EXPL])
86 GNULIB_EXP2=0; AC_SUBST([GNULIB_EXP2])
87 GNULIB_EXP2F=0; AC_SUBST([GNULIB_EXP2F])
88 GNULIB_EXP2L=0; AC_SUBST([GNULIB_EXP2L])
89 GNULIB_EXPM1=0; AC_SUBST([GNULIB_EXPM1])
90 GNULIB_EXPM1F=0; AC_SUBST([GNULIB_EXPM1F])
91 GNULIB_EXPM1L=0; AC_SUBST([GNULIB_EXPM1L])
92 GNULIB_FABSF=0; AC_SUBST([GNULIB_FABSF])
93 GNULIB_FABSL=0; AC_SUBST([GNULIB_FABSL])
94 GNULIB_FLOOR=0; AC_SUBST([GNULIB_FLOOR])
95 GNULIB_FLOORF=0; AC_SUBST([GNULIB_FLOORF])
96 GNULIB_FLOORL=0; AC_SUBST([GNULIB_FLOORL])
97 GNULIB_FMA=0; AC_SUBST([GNULIB_FMA])
98 GNULIB_FMAF=0; AC_SUBST([GNULIB_FMAF])
99 GNULIB_FMAL=0; AC_SUBST([GNULIB_FMAL])
100 GNULIB_FMOD=0; AC_SUBST([GNULIB_FMOD])
101 GNULIB_FMODF=0; AC_SUBST([GNULIB_FMODF])
102 GNULIB_FMODL=0; AC_SUBST([GNULIB_FMODL])
103 GNULIB_FREXPF=0; AC_SUBST([GNULIB_FREXPF])
104 GNULIB_FREXP=0; AC_SUBST([GNULIB_FREXP])
105 GNULIB_FREXPL=0; AC_SUBST([GNULIB_FREXPL])
106 GNULIB_HYPOT=0; AC_SUBST([GNULIB_HYPOT])
107 GNULIB_HYPOTF=0; AC_SUBST([GNULIB_HYPOTF])
108 GNULIB_HYPOTL=0; AC_SUBST([GNULIB_HYPOTL])
109 GNULIB_ISFINITE=0; AC_SUBST([GNULIB_ISFINITE])
110 GNULIB_ISINF=0; AC_SUBST([GNULIB_ISINF])
111 GNULIB_ISNAN=0; AC_SUBST([GNULIB_ISNAN])
112 GNULIB_ISNANF=0; AC_SUBST([GNULIB_ISNANF])
113 GNULIB_ISNAND=0; AC_SUBST([GNULIB_ISNAND])
114 GNULIB_ISNANL=0; AC_SUBST([GNULIB_ISNANL])
115 GNULIB_LDEXPF=0; AC_SUBST([GNULIB_LDEXPF])
116 GNULIB_LDEXPL=0; AC_SUBST([GNULIB_LDEXPL])
117 GNULIB_LOGB=0; AC_SUBST([GNULIB_LOGB])
118 GNULIB_LOG=0; AC_SUBST([GNULIB_LOG])
119 GNULIB_LOGF=0; AC_SUBST([GNULIB_LOGF])
120 GNULIB_LOGL=0; AC_SUBST([GNULIB_LOGL])
121 GNULIB_LOG10F=0; AC_SUBST([GNULIB_LOG10F])
122 GNULIB_LOG10L=0; AC_SUBST([GNULIB_LOG10L])
123 GNULIB_LOG1P=0; AC_SUBST([GNULIB_LOG1P])
124 GNULIB_LOG1PF=0; AC_SUBST([GNULIB_LOG1PF])
125 GNULIB_LOG1PL=0; AC_SUBST([GNULIB_LOG1PL])
126 GNULIB_LOG2=0; AC_SUBST([GNULIB_LOG2])
127 GNULIB_MODF=0; AC_SUBST([GNULIB_MODF])
128 GNULIB_MODFF=0; AC_SUBST([GNULIB_MODFF])
129 GNULIB_MODFL=0; AC_SUBST([GNULIB_MODFL])
130 GNULIB_POWF=0; AC_SUBST([GNULIB_POWF])
131 GNULIB_REMAINDER=0; AC_SUBST([GNULIB_REMAINDER])
132 GNULIB_REMAINDERF=0; AC_SUBST([GNULIB_REMAINDERF])
133 GNULIB_REMAINDERL=0; AC_SUBST([GNULIB_REMAINDERL])
134 GNULIB_RINT=0; AC_SUBST([GNULIB_RINT])
135 GNULIB_RINTF=0; AC_SUBST([GNULIB_RINTF])
136 GNULIB_RINTL=0; AC_SUBST([GNULIB_RINTL])
137 GNULIB_ROUND=0; AC_SUBST([GNULIB_ROUND])
138 GNULIB_ROUNDF=0; AC_SUBST([GNULIB_ROUNDF])
139 GNULIB_ROUNDL=0; AC_SUBST([GNULIB_ROUNDL])
140 GNULIB_SIGNBIT=0; AC_SUBST([GNULIB_SIGNBIT])
141 GNULIB_SINF=0; AC_SUBST([GNULIB_SINF])
142 GNULIB_SINL=0; AC_SUBST([GNULIB_SINL])
143 GNULIB_SINHF=0; AC_SUBST([GNULIB_SINHF])
144 GNULIB_SQRTF=0; AC_SUBST([GNULIB_SQRTF])
145 GNULIB_SQRTL=0; AC_SUBST([GNULIB_SQRTL])
146 GNULIB_TANF=0; AC_SUBST([GNULIB_TANF])
147 GNULIB_TANL=0; AC_SUBST([GNULIB_TANL])
148 GNULIB_TANHF=0; AC_SUBST([GNULIB_TANHF])
149 GNULIB_TRUNC=0; AC_SUBST([GNULIB_TRUNC])
150 GNULIB_TRUNCF=0; AC_SUBST([GNULIB_TRUNCF])
151 GNULIB_TRUNCL=0; AC_SUBST([GNULIB_TRUNCL])
152 dnl Assume proper GNU behavior unless another module says otherwise.
153 HAVE_ACOSF=1; AC_SUBST([HAVE_ACOSF])
154 HAVE_ACOSL=1; AC_SUBST([HAVE_ACOSL])
155 HAVE_ASINF=1; AC_SUBST([HAVE_ASINF])
156 HAVE_ASINL=1; AC_SUBST([HAVE_ASINL])
157 HAVE_ATANF=1; AC_SUBST([HAVE_ATANF])
158 HAVE_ATANL=1; AC_SUBST([HAVE_ATANL])
159 HAVE_ATAN2F=1; AC_SUBST([HAVE_ATAN2F])
160 HAVE_CBRT=1; AC_SUBST([HAVE_CBRT])
161 HAVE_CBRTF=1; AC_SUBST([HAVE_CBRTF])
162 HAVE_CBRTL=1; AC_SUBST([HAVE_CBRTL])
163 HAVE_COPYSIGN=1; AC_SUBST([HAVE_COPYSIGN])
164 HAVE_COPYSIGNL=1; AC_SUBST([HAVE_COPYSIGNL])
165 HAVE_COSF=1; AC_SUBST([HAVE_COSF])
166 HAVE_COSL=1; AC_SUBST([HAVE_COSL])
167 HAVE_COSHF=1; AC_SUBST([HAVE_COSHF])
168 HAVE_EXPF=1; AC_SUBST([HAVE_EXPF])
169 HAVE_EXPL=1; AC_SUBST([HAVE_EXPL])
170 HAVE_EXPM1=1; AC_SUBST([HAVE_EXPM1])
171 HAVE_EXPM1F=1; AC_SUBST([HAVE_EXPM1F])
172 HAVE_FABSF=1; AC_SUBST([HAVE_FABSF])
173 HAVE_FABSL=1; AC_SUBST([HAVE_FABSL])
174 HAVE_FMA=1; AC_SUBST([HAVE_FMA])
175 HAVE_FMAF=1; AC_SUBST([HAVE_FMAF])
176 HAVE_FMAL=1; AC_SUBST([HAVE_FMAL])
177 HAVE_FMODF=1; AC_SUBST([HAVE_FMODF])
178 HAVE_FMODL=1; AC_SUBST([HAVE_FMODL])
179 HAVE_FREXPF=1; AC_SUBST([HAVE_FREXPF])
180 HAVE_HYPOTF=1; AC_SUBST([HAVE_HYPOTF])
181 HAVE_HYPOTL=1; AC_SUBST([HAVE_HYPOTL])
182 HAVE_ISNANF=1; AC_SUBST([HAVE_ISNANF])
183 HAVE_ISNAND=1; AC_SUBST([HAVE_ISNAND])
184 HAVE_ISNANL=1; AC_SUBST([HAVE_ISNANL])
185 HAVE_LDEXPF=1; AC_SUBST([HAVE_LDEXPF])
186 HAVE_LOGF=1; AC_SUBST([HAVE_LOGF])
187 HAVE_LOGL=1; AC_SUBST([HAVE_LOGL])
188 HAVE_LOG10F=1; AC_SUBST([HAVE_LOG10F])
189 HAVE_LOG10L=1; AC_SUBST([HAVE_LOG10L])
190 HAVE_LOG1P=1; AC_SUBST([HAVE_LOG1P])
191 HAVE_LOG1PF=1; AC_SUBST([HAVE_LOG1PF])
192 HAVE_LOG1PL=1; AC_SUBST([HAVE_LOG1PL])
193 HAVE_MODFF=1; AC_SUBST([HAVE_MODFF])
194 HAVE_MODFL=1; AC_SUBST([HAVE_MODFL])
195 HAVE_POWF=1; AC_SUBST([HAVE_POWF])
196 HAVE_REMAINDER=1; AC_SUBST([HAVE_REMAINDER])
197 HAVE_REMAINDERF=1; AC_SUBST([HAVE_REMAINDERF])
198 HAVE_RINT=1; AC_SUBST([HAVE_RINT])
199 HAVE_RINTL=1; AC_SUBST([HAVE_RINTL])
200 HAVE_SINF=1; AC_SUBST([HAVE_SINF])
201 HAVE_SINL=1; AC_SUBST([HAVE_SINL])
202 HAVE_SINHF=1; AC_SUBST([HAVE_SINHF])
203 HAVE_SQRTF=1; AC_SUBST([HAVE_SQRTF])
204 HAVE_SQRTL=1; AC_SUBST([HAVE_SQRTL])
205 HAVE_TANF=1; AC_SUBST([HAVE_TANF])
206 HAVE_TANL=1; AC_SUBST([HAVE_TANL])
207 HAVE_TANHF=1; AC_SUBST([HAVE_TANHF])
208 HAVE_DECL_ACOSL=1; AC_SUBST([HAVE_DECL_ACOSL])
209 HAVE_DECL_ASINL=1; AC_SUBST([HAVE_DECL_ASINL])
210 HAVE_DECL_ATANL=1; AC_SUBST([HAVE_DECL_ATANL])
211 HAVE_DECL_CBRTF=1; AC_SUBST([HAVE_DECL_CBRTF])
212 HAVE_DECL_CBRTL=1; AC_SUBST([HAVE_DECL_CBRTL])
213 HAVE_DECL_CEILF=1; AC_SUBST([HAVE_DECL_CEILF])
214 HAVE_DECL_CEILL=1; AC_SUBST([HAVE_DECL_CEILL])
215 HAVE_DECL_COPYSIGNF=1; AC_SUBST([HAVE_DECL_COPYSIGNF])
216 HAVE_DECL_COSL=1; AC_SUBST([HAVE_DECL_COSL])
217 HAVE_DECL_EXPL=1; AC_SUBST([HAVE_DECL_EXPL])
218 HAVE_DECL_EXP2=1; AC_SUBST([HAVE_DECL_EXP2])
219 HAVE_DECL_EXP2F=1; AC_SUBST([HAVE_DECL_EXP2F])
220 HAVE_DECL_EXP2L=1; AC_SUBST([HAVE_DECL_EXP2L])
221 HAVE_DECL_EXPM1L=1; AC_SUBST([HAVE_DECL_EXPM1L])
222 HAVE_DECL_FLOORF=1; AC_SUBST([HAVE_DECL_FLOORF])
223 HAVE_DECL_FLOORL=1; AC_SUBST([HAVE_DECL_FLOORL])
224 HAVE_DECL_FREXPL=1; AC_SUBST([HAVE_DECL_FREXPL])
225 HAVE_DECL_LDEXPL=1; AC_SUBST([HAVE_DECL_LDEXPL])
226 HAVE_DECL_LOGB=1; AC_SUBST([HAVE_DECL_LOGB])
227 HAVE_DECL_LOGL=1; AC_SUBST([HAVE_DECL_LOGL])
228 HAVE_DECL_LOG10L=1; AC_SUBST([HAVE_DECL_LOG10L])
229 HAVE_DECL_LOG2=1; AC_SUBST([HAVE_DECL_LOG2])
230 HAVE_DECL_REMAINDER=1; AC_SUBST([HAVE_DECL_REMAINDER])
231 HAVE_DECL_REMAINDERL=1; AC_SUBST([HAVE_DECL_REMAINDERL])
232 HAVE_DECL_RINTF=1; AC_SUBST([HAVE_DECL_RINTF])
233 HAVE_DECL_ROUND=1; AC_SUBST([HAVE_DECL_ROUND])
234 HAVE_DECL_ROUNDF=1; AC_SUBST([HAVE_DECL_ROUNDF])
235 HAVE_DECL_ROUNDL=1; AC_SUBST([HAVE_DECL_ROUNDL])
236 HAVE_DECL_SINL=1; AC_SUBST([HAVE_DECL_SINL])
237 HAVE_DECL_SQRTL=1; AC_SUBST([HAVE_DECL_SQRTL])
238 HAVE_DECL_TANL=1; AC_SUBST([HAVE_DECL_TANL])
239 HAVE_DECL_TRUNC=1; AC_SUBST([HAVE_DECL_TRUNC])
240 HAVE_DECL_TRUNCF=1; AC_SUBST([HAVE_DECL_TRUNCF])
241 HAVE_DECL_TRUNCL=1; AC_SUBST([HAVE_DECL_TRUNCL])
242 REPLACE_CBRTF=0; AC_SUBST([REPLACE_CBRTF])
243 REPLACE_CBRTL=0; AC_SUBST([REPLACE_CBRTL])
244 REPLACE_CEIL=0; AC_SUBST([REPLACE_CEIL])
245 REPLACE_CEILF=0; AC_SUBST([REPLACE_CEILF])
246 REPLACE_CEILL=0; AC_SUBST([REPLACE_CEILL])
247 REPLACE_EXPM1=0; AC_SUBST([REPLACE_EXPM1])
248 REPLACE_EXPM1F=0; AC_SUBST([REPLACE_EXPM1F])
249 REPLACE_EXP2=0; AC_SUBST([REPLACE_EXP2])
250 REPLACE_EXP2L=0; AC_SUBST([REPLACE_EXP2L])
251 REPLACE_FABSL=0; AC_SUBST([REPLACE_FABSL])
252 REPLACE_FLOOR=0; AC_SUBST([REPLACE_FLOOR])
253 REPLACE_FLOORF=0; AC_SUBST([REPLACE_FLOORF])
254 REPLACE_FLOORL=0; AC_SUBST([REPLACE_FLOORL])
255 REPLACE_FMA=0; AC_SUBST([REPLACE_FMA])
256 REPLACE_FMAF=0; AC_SUBST([REPLACE_FMAF])
257 REPLACE_FMAL=0; AC_SUBST([REPLACE_FMAL])
258 REPLACE_FMOD=0; AC_SUBST([REPLACE_FMOD])
259 REPLACE_FMODF=0; AC_SUBST([REPLACE_FMODF])
260 REPLACE_FMODL=0; AC_SUBST([REPLACE_FMODL])
261 REPLACE_FREXPF=0; AC_SUBST([REPLACE_FREXPF])
262 REPLACE_FREXP=0; AC_SUBST([REPLACE_FREXP])
263 REPLACE_FREXPL=0; AC_SUBST([REPLACE_FREXPL])
264 REPLACE_HUGE_VAL=0; AC_SUBST([REPLACE_HUGE_VAL])
265 REPLACE_HYPOT=0; AC_SUBST([REPLACE_HYPOT])
266 REPLACE_HYPOTF=0; AC_SUBST([REPLACE_HYPOTF])
267 REPLACE_HYPOTL=0; AC_SUBST([REPLACE_HYPOTL])
268 REPLACE_ISFINITE=0; AC_SUBST([REPLACE_ISFINITE])
269 REPLACE_ISINF=0; AC_SUBST([REPLACE_ISINF])
270 REPLACE_ISNAN=0; AC_SUBST([REPLACE_ISNAN])
271 REPLACE_LDEXPL=0; AC_SUBST([REPLACE_LDEXPL])
272 REPLACE_LOG=0; AC_SUBST([REPLACE_LOG])
273 REPLACE_LOGF=0; AC_SUBST([REPLACE_LOGF])
274 REPLACE_LOGL=0; AC_SUBST([REPLACE_LOGL])
275 REPLACE_LOG1P=0; AC_SUBST([REPLACE_LOG1P])
276 REPLACE_LOG1PF=0; AC_SUBST([REPLACE_LOG1PF])
277 REPLACE_LOG1PL=0; AC_SUBST([REPLACE_LOG1PL])
278 REPLACE_LOG2=0; AC_SUBST([REPLACE_LOG2])
279 REPLACE_MODF=0; AC_SUBST([REPLACE_MODF])
280 REPLACE_MODFF=0; AC_SUBST([REPLACE_MODFF])
281 REPLACE_MODFL=0; AC_SUBST([REPLACE_MODFL])
282 REPLACE_NAN=0; AC_SUBST([REPLACE_NAN])
283 REPLACE_REMAINDER=0; AC_SUBST([REPLACE_REMAINDER])
284 REPLACE_REMAINDERF=0; AC_SUBST([REPLACE_REMAINDERF])
285 REPLACE_REMAINDERL=0; AC_SUBST([REPLACE_REMAINDERL])
286 REPLACE_ROUND=0; AC_SUBST([REPLACE_ROUND])
287 REPLACE_ROUNDF=0; AC_SUBST([REPLACE_ROUNDF])
288 REPLACE_ROUNDL=0; AC_SUBST([REPLACE_ROUNDL])
289 REPLACE_SIGNBIT=0; AC_SUBST([REPLACE_SIGNBIT])
290 REPLACE_SIGNBIT_USING_GCC=0; AC_SUBST([REPLACE_SIGNBIT_USING_GCC])
291 REPLACE_TRUNC=0; AC_SUBST([REPLACE_TRUNC])
292 REPLACE_TRUNCF=0; AC_SUBST([REPLACE_TRUNCF])
293 REPLACE_TRUNCL=0; AC_SUBST([REPLACE_TRUNCL])
296 # gl_LONG_DOUBLE_VS_DOUBLE
297 # determines whether 'long double' and 'double' have the same representation.
298 # Sets variable HAVE_SAME_LONG_DOUBLE_AS_DOUBLE to 0 or 1, and defines
299 # HAVE_SAME_LONG_DOUBLE_AS_DOUBLE accordingly.
300 # The currently known platforms where this is the case are:
301 # Linux/HPPA, Minix 3.1.8, AIX 5, AIX 6 and 7 with xlc, MSVC 9.
302 AC_DEFUN([gl_LONG_DOUBLE_VS_DOUBLE],
304 AC_CACHE_CHECK([whether long double and double are the same],
305 [gl_cv_long_double_equals_double],
307 [AC_LANG_PROGRAM([[#include <float.h>]],
308 [[typedef int check[sizeof (long double) == sizeof (double)
309 && LDBL_MANT_DIG == DBL_MANT_DIG
310 && LDBL_MAX_EXP == DBL_MAX_EXP
311 && LDBL_MIN_EXP == DBL_MIN_EXP
314 [gl_cv_long_double_equals_double=yes],
315 [gl_cv_long_double_equals_double=no])
317 if test $gl_cv_long_double_equals_double = yes; then
318 AC_DEFINE([HAVE_SAME_LONG_DOUBLE_AS_DOUBLE], [1],
319 [Define to 1 if 'long double' and 'double' have the same representation.])
320 HAVE_SAME_LONG_DOUBLE_AS_DOUBLE=1
322 HAVE_SAME_LONG_DOUBLE_AS_DOUBLE=0
324 AC_SUBST([HAVE_SAME_LONG_DOUBLE_AS_DOUBLE])