File: math_h.m4

package info (click to toggle)
grub2 2.02+dfsg1-20
  • links: PTS, VCS
  • area: main
  • in suites: buster
  • size: 61,784 kB
  • sloc: ansic: 384,086; asm: 16,323; sh: 13,230; cpp: 1,994; makefile: 1,488; python: 1,458; sed: 423; lex: 393; yacc: 267; awk: 75; lisp: 50; perl: 31
file content (353 lines) | stat: -rw-r--r-- 17,481 bytes parent folder | download | duplicates (29)
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
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
# math_h.m4 serial 114
dnl Copyright (C) 2007-2013 Free Software Foundation, Inc.
dnl This file is free software; the Free Software Foundation
dnl gives unlimited permission to copy and/or distribute it,
dnl with or without modifications, as long as this notice is preserved.

AC_DEFUN([gl_MATH_H],
[
  AC_REQUIRE([gl_MATH_H_DEFAULTS])
  gl_CHECK_NEXT_HEADERS([math.h])

  AC_CACHE_CHECK([whether NAN macro works], [gl_cv_header_math_nan_works],
    [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[@%:@include <math.h>]],
      [[/* Solaris 10 has a broken definition of NAN.  Other platforms
        fail to provide NAN, or provide it only in C99 mode; this
        test only needs to fail when NAN is provided but wrong.  */
         float f = 1.0f;
#ifdef NAN
         f = NAN;
#endif
         return f == 0;]])],
      [gl_cv_header_math_nan_works=yes],
      [gl_cv_header_math_nan_works=no])])
  if test $gl_cv_header_math_nan_works = no; then
    REPLACE_NAN=1
  fi
  AC_CACHE_CHECK([whether HUGE_VAL works], [gl_cv_header_math_huge_val_works],
    [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[@%:@include <math.h>]],
      [[/* Solaris 10 has a broken definition of HUGE_VAL.  */
         double d = HUGE_VAL;
         return d == 0;]])],
      [gl_cv_header_math_huge_val_works=yes],
      [gl_cv_header_math_huge_val_works=no])])
  if test $gl_cv_header_math_huge_val_works = no; then
    REPLACE_HUGE_VAL=1
  fi

  dnl Check for declarations of anything we want to poison if the
  dnl corresponding gnulib module is not in use.
  gl_WARN_ON_USE_PREPARE([[#include <math.h>]],
    [acosf acosl asinf asinl atanf atanl
     cbrt cbrtf cbrtl ceilf ceill copysign copysignf copysignl cosf cosl coshf
     expf expl exp2 exp2f exp2l expm1 expm1f expm1l
     fabsf fabsl floorf floorl fma fmaf fmal
     fmod fmodf fmodl frexpf frexpl hypotf hypotl
     ilogb ilogbf ilogbl
     ldexpf ldexpl
     log logf logl log10 log10f log10l log1p log1pf log1pl log2 log2f log2l
     logb logbf logbl
     modf modff modfl powf
     remainder remainderf remainderl
     rint rintf rintl round roundf roundl sinf sinl sinhf sqrtf sqrtl
     tanf tanl tanhf trunc truncf truncl])
])

AC_DEFUN([gl_MATH_MODULE_INDICATOR],
[
  dnl Use AC_REQUIRE here, so that the default settings are expanded once only.
  AC_REQUIRE([gl_MATH_H_DEFAULTS])
  gl_MODULE_INDICATOR_SET_VARIABLE([$1])
  dnl Define it also as a C macro, for the benefit of the unit tests.
  gl_MODULE_INDICATOR_FOR_TESTS([$1])
])

AC_DEFUN([gl_MATH_H_DEFAULTS],
[
  GNULIB_ACOSF=0;      AC_SUBST([GNULIB_ACOSF])
  GNULIB_ACOSL=0;      AC_SUBST([GNULIB_ACOSL])
  GNULIB_ASINF=0;      AC_SUBST([GNULIB_ASINF])
  GNULIB_ASINL=0;      AC_SUBST([GNULIB_ASINL])
  GNULIB_ATANF=0;      AC_SUBST([GNULIB_ATANF])
  GNULIB_ATANL=0;      AC_SUBST([GNULIB_ATANL])
  GNULIB_ATAN2F=0;     AC_SUBST([GNULIB_ATAN2F])
  GNULIB_CBRT=0;       AC_SUBST([GNULIB_CBRT])
  GNULIB_CBRTF=0;      AC_SUBST([GNULIB_CBRTF])
  GNULIB_CBRTL=0;      AC_SUBST([GNULIB_CBRTL])
  GNULIB_CEIL=0;       AC_SUBST([GNULIB_CEIL])
  GNULIB_CEILF=0;      AC_SUBST([GNULIB_CEILF])
  GNULIB_CEILL=0;      AC_SUBST([GNULIB_CEILL])
  GNULIB_COPYSIGN=0;   AC_SUBST([GNULIB_COPYSIGN])
  GNULIB_COPYSIGNF=0;  AC_SUBST([GNULIB_COPYSIGNF])
  GNULIB_COPYSIGNL=0;  AC_SUBST([GNULIB_COPYSIGNL])
  GNULIB_COSF=0;       AC_SUBST([GNULIB_COSF])
  GNULIB_COSL=0;       AC_SUBST([GNULIB_COSL])
  GNULIB_COSHF=0;      AC_SUBST([GNULIB_COSHF])
  GNULIB_EXPF=0;       AC_SUBST([GNULIB_EXPF])
  GNULIB_EXPL=0;       AC_SUBST([GNULIB_EXPL])
  GNULIB_EXP2=0;       AC_SUBST([GNULIB_EXP2])
  GNULIB_EXP2F=0;      AC_SUBST([GNULIB_EXP2F])
  GNULIB_EXP2L=0;      AC_SUBST([GNULIB_EXP2L])
  GNULIB_EXPM1=0;      AC_SUBST([GNULIB_EXPM1])
  GNULIB_EXPM1F=0;     AC_SUBST([GNULIB_EXPM1F])
  GNULIB_EXPM1L=0;     AC_SUBST([GNULIB_EXPM1L])
  GNULIB_FABSF=0;      AC_SUBST([GNULIB_FABSF])
  GNULIB_FABSL=0;      AC_SUBST([GNULIB_FABSL])
  GNULIB_FLOOR=0;      AC_SUBST([GNULIB_FLOOR])
  GNULIB_FLOORF=0;     AC_SUBST([GNULIB_FLOORF])
  GNULIB_FLOORL=0;     AC_SUBST([GNULIB_FLOORL])
  GNULIB_FMA=0;        AC_SUBST([GNULIB_FMA])
  GNULIB_FMAF=0;       AC_SUBST([GNULIB_FMAF])
  GNULIB_FMAL=0;       AC_SUBST([GNULIB_FMAL])
  GNULIB_FMOD=0;       AC_SUBST([GNULIB_FMOD])
  GNULIB_FMODF=0;      AC_SUBST([GNULIB_FMODF])
  GNULIB_FMODL=0;      AC_SUBST([GNULIB_FMODL])
  GNULIB_FREXPF=0;     AC_SUBST([GNULIB_FREXPF])
  GNULIB_FREXP=0;      AC_SUBST([GNULIB_FREXP])
  GNULIB_FREXPL=0;     AC_SUBST([GNULIB_FREXPL])
  GNULIB_HYPOT=0;      AC_SUBST([GNULIB_HYPOT])
  GNULIB_HYPOTF=0;     AC_SUBST([GNULIB_HYPOTF])
  GNULIB_HYPOTL=0;     AC_SUBST([GNULIB_HYPOTL])
  GNULIB_ILOGB=0;      AC_SUBST([GNULIB_ILOGB])
  GNULIB_ILOGBF=0;     AC_SUBST([GNULIB_ILOGBF])
  GNULIB_ILOGBL=0;     AC_SUBST([GNULIB_ILOGBL])
  GNULIB_ISFINITE=0;   AC_SUBST([GNULIB_ISFINITE])
  GNULIB_ISINF=0;      AC_SUBST([GNULIB_ISINF])
  GNULIB_ISNAN=0;      AC_SUBST([GNULIB_ISNAN])
  GNULIB_ISNANF=0;     AC_SUBST([GNULIB_ISNANF])
  GNULIB_ISNAND=0;     AC_SUBST([GNULIB_ISNAND])
  GNULIB_ISNANL=0;     AC_SUBST([GNULIB_ISNANL])
  GNULIB_LDEXPF=0;     AC_SUBST([GNULIB_LDEXPF])
  GNULIB_LDEXPL=0;     AC_SUBST([GNULIB_LDEXPL])
  GNULIB_LOG=0;        AC_SUBST([GNULIB_LOG])
  GNULIB_LOGF=0;       AC_SUBST([GNULIB_LOGF])
  GNULIB_LOGL=0;       AC_SUBST([GNULIB_LOGL])
  GNULIB_LOG10=0;      AC_SUBST([GNULIB_LOG10])
  GNULIB_LOG10F=0;     AC_SUBST([GNULIB_LOG10F])
  GNULIB_LOG10L=0;     AC_SUBST([GNULIB_LOG10L])
  GNULIB_LOG1P=0;      AC_SUBST([GNULIB_LOG1P])
  GNULIB_LOG1PF=0;     AC_SUBST([GNULIB_LOG1PF])
  GNULIB_LOG1PL=0;     AC_SUBST([GNULIB_LOG1PL])
  GNULIB_LOG2=0;       AC_SUBST([GNULIB_LOG2])
  GNULIB_LOG2F=0;      AC_SUBST([GNULIB_LOG2F])
  GNULIB_LOG2L=0;      AC_SUBST([GNULIB_LOG2L])
  GNULIB_LOGB=0;       AC_SUBST([GNULIB_LOGB])
  GNULIB_LOGBF=0;      AC_SUBST([GNULIB_LOGBF])
  GNULIB_LOGBL=0;      AC_SUBST([GNULIB_LOGBL])
  GNULIB_MODF=0;       AC_SUBST([GNULIB_MODF])
  GNULIB_MODFF=0;      AC_SUBST([GNULIB_MODFF])
  GNULIB_MODFL=0;      AC_SUBST([GNULIB_MODFL])
  GNULIB_POWF=0;       AC_SUBST([GNULIB_POWF])
  GNULIB_REMAINDER=0;  AC_SUBST([GNULIB_REMAINDER])
  GNULIB_REMAINDERF=0; AC_SUBST([GNULIB_REMAINDERF])
  GNULIB_REMAINDERL=0; AC_SUBST([GNULIB_REMAINDERL])
  GNULIB_RINT=0;       AC_SUBST([GNULIB_RINT])
  GNULIB_RINTF=0;      AC_SUBST([GNULIB_RINTF])
  GNULIB_RINTL=0;      AC_SUBST([GNULIB_RINTL])
  GNULIB_ROUND=0;      AC_SUBST([GNULIB_ROUND])
  GNULIB_ROUNDF=0;     AC_SUBST([GNULIB_ROUNDF])
  GNULIB_ROUNDL=0;     AC_SUBST([GNULIB_ROUNDL])
  GNULIB_SIGNBIT=0;    AC_SUBST([GNULIB_SIGNBIT])
  GNULIB_SINF=0;       AC_SUBST([GNULIB_SINF])
  GNULIB_SINL=0;       AC_SUBST([GNULIB_SINL])
  GNULIB_SINHF=0;      AC_SUBST([GNULIB_SINHF])
  GNULIB_SQRTF=0;      AC_SUBST([GNULIB_SQRTF])
  GNULIB_SQRTL=0;      AC_SUBST([GNULIB_SQRTL])
  GNULIB_TANF=0;       AC_SUBST([GNULIB_TANF])
  GNULIB_TANL=0;       AC_SUBST([GNULIB_TANL])
  GNULIB_TANHF=0;      AC_SUBST([GNULIB_TANHF])
  GNULIB_TRUNC=0;      AC_SUBST([GNULIB_TRUNC])
  GNULIB_TRUNCF=0;     AC_SUBST([GNULIB_TRUNCF])
  GNULIB_TRUNCL=0;     AC_SUBST([GNULIB_TRUNCL])
  dnl Assume proper GNU behavior unless another module says otherwise.
  HAVE_ACOSF=1;                AC_SUBST([HAVE_ACOSF])
  HAVE_ACOSL=1;                AC_SUBST([HAVE_ACOSL])
  HAVE_ASINF=1;                AC_SUBST([HAVE_ASINF])
  HAVE_ASINL=1;                AC_SUBST([HAVE_ASINL])
  HAVE_ATANF=1;                AC_SUBST([HAVE_ATANF])
  HAVE_ATANL=1;                AC_SUBST([HAVE_ATANL])
  HAVE_ATAN2F=1;               AC_SUBST([HAVE_ATAN2F])
  HAVE_CBRT=1;                 AC_SUBST([HAVE_CBRT])
  HAVE_CBRTF=1;                AC_SUBST([HAVE_CBRTF])
  HAVE_CBRTL=1;                AC_SUBST([HAVE_CBRTL])
  HAVE_COPYSIGN=1;             AC_SUBST([HAVE_COPYSIGN])
  HAVE_COPYSIGNL=1;            AC_SUBST([HAVE_COPYSIGNL])
  HAVE_COSF=1;                 AC_SUBST([HAVE_COSF])
  HAVE_COSL=1;                 AC_SUBST([HAVE_COSL])
  HAVE_COSHF=1;                AC_SUBST([HAVE_COSHF])
  HAVE_EXPF=1;                 AC_SUBST([HAVE_EXPF])
  HAVE_EXPL=1;                 AC_SUBST([HAVE_EXPL])
  HAVE_EXPM1=1;                AC_SUBST([HAVE_EXPM1])
  HAVE_EXPM1F=1;               AC_SUBST([HAVE_EXPM1F])
  HAVE_FABSF=1;                AC_SUBST([HAVE_FABSF])
  HAVE_FABSL=1;                AC_SUBST([HAVE_FABSL])
  HAVE_FMA=1;                  AC_SUBST([HAVE_FMA])
  HAVE_FMAF=1;                 AC_SUBST([HAVE_FMAF])
  HAVE_FMAL=1;                 AC_SUBST([HAVE_FMAL])
  HAVE_FMODF=1;                AC_SUBST([HAVE_FMODF])
  HAVE_FMODL=1;                AC_SUBST([HAVE_FMODL])
  HAVE_FREXPF=1;               AC_SUBST([HAVE_FREXPF])
  HAVE_HYPOTF=1;               AC_SUBST([HAVE_HYPOTF])
  HAVE_HYPOTL=1;               AC_SUBST([HAVE_HYPOTL])
  HAVE_ILOGB=1;                AC_SUBST([HAVE_ILOGB])
  HAVE_ILOGBF=1;               AC_SUBST([HAVE_ILOGBF])
  HAVE_ILOGBL=1;               AC_SUBST([HAVE_ILOGBL])
  HAVE_ISNANF=1;               AC_SUBST([HAVE_ISNANF])
  HAVE_ISNAND=1;               AC_SUBST([HAVE_ISNAND])
  HAVE_ISNANL=1;               AC_SUBST([HAVE_ISNANL])
  HAVE_LDEXPF=1;               AC_SUBST([HAVE_LDEXPF])
  HAVE_LOGF=1;                 AC_SUBST([HAVE_LOGF])
  HAVE_LOGL=1;                 AC_SUBST([HAVE_LOGL])
  HAVE_LOG10F=1;               AC_SUBST([HAVE_LOG10F])
  HAVE_LOG10L=1;               AC_SUBST([HAVE_LOG10L])
  HAVE_LOG1P=1;                AC_SUBST([HAVE_LOG1P])
  HAVE_LOG1PF=1;               AC_SUBST([HAVE_LOG1PF])
  HAVE_LOG1PL=1;               AC_SUBST([HAVE_LOG1PL])
  HAVE_LOGBF=1;                AC_SUBST([HAVE_LOGBF])
  HAVE_LOGBL=1;                AC_SUBST([HAVE_LOGBL])
  HAVE_MODFF=1;                AC_SUBST([HAVE_MODFF])
  HAVE_MODFL=1;                AC_SUBST([HAVE_MODFL])
  HAVE_POWF=1;                 AC_SUBST([HAVE_POWF])
  HAVE_REMAINDER=1;            AC_SUBST([HAVE_REMAINDER])
  HAVE_REMAINDERF=1;           AC_SUBST([HAVE_REMAINDERF])
  HAVE_RINT=1;                 AC_SUBST([HAVE_RINT])
  HAVE_RINTL=1;                AC_SUBST([HAVE_RINTL])
  HAVE_SINF=1;                 AC_SUBST([HAVE_SINF])
  HAVE_SINL=1;                 AC_SUBST([HAVE_SINL])
  HAVE_SINHF=1;                AC_SUBST([HAVE_SINHF])
  HAVE_SQRTF=1;                AC_SUBST([HAVE_SQRTF])
  HAVE_SQRTL=1;                AC_SUBST([HAVE_SQRTL])
  HAVE_TANF=1;                 AC_SUBST([HAVE_TANF])
  HAVE_TANL=1;                 AC_SUBST([HAVE_TANL])
  HAVE_TANHF=1;                AC_SUBST([HAVE_TANHF])
  HAVE_DECL_ACOSL=1;           AC_SUBST([HAVE_DECL_ACOSL])
  HAVE_DECL_ASINL=1;           AC_SUBST([HAVE_DECL_ASINL])
  HAVE_DECL_ATANL=1;           AC_SUBST([HAVE_DECL_ATANL])
  HAVE_DECL_CBRTF=1;           AC_SUBST([HAVE_DECL_CBRTF])
  HAVE_DECL_CBRTL=1;           AC_SUBST([HAVE_DECL_CBRTL])
  HAVE_DECL_CEILF=1;           AC_SUBST([HAVE_DECL_CEILF])
  HAVE_DECL_CEILL=1;           AC_SUBST([HAVE_DECL_CEILL])
  HAVE_DECL_COPYSIGNF=1;       AC_SUBST([HAVE_DECL_COPYSIGNF])
  HAVE_DECL_COSL=1;            AC_SUBST([HAVE_DECL_COSL])
  HAVE_DECL_EXPL=1;            AC_SUBST([HAVE_DECL_EXPL])
  HAVE_DECL_EXP2=1;            AC_SUBST([HAVE_DECL_EXP2])
  HAVE_DECL_EXP2F=1;           AC_SUBST([HAVE_DECL_EXP2F])
  HAVE_DECL_EXP2L=1;           AC_SUBST([HAVE_DECL_EXP2L])
  HAVE_DECL_EXPM1L=1;          AC_SUBST([HAVE_DECL_EXPM1L])
  HAVE_DECL_FLOORF=1;          AC_SUBST([HAVE_DECL_FLOORF])
  HAVE_DECL_FLOORL=1;          AC_SUBST([HAVE_DECL_FLOORL])
  HAVE_DECL_FREXPL=1;          AC_SUBST([HAVE_DECL_FREXPL])
  HAVE_DECL_LDEXPL=1;          AC_SUBST([HAVE_DECL_LDEXPL])
  HAVE_DECL_LOGL=1;            AC_SUBST([HAVE_DECL_LOGL])
  HAVE_DECL_LOG10L=1;          AC_SUBST([HAVE_DECL_LOG10L])
  HAVE_DECL_LOG2=1;            AC_SUBST([HAVE_DECL_LOG2])
  HAVE_DECL_LOG2F=1;           AC_SUBST([HAVE_DECL_LOG2F])
  HAVE_DECL_LOG2L=1;           AC_SUBST([HAVE_DECL_LOG2L])
  HAVE_DECL_LOGB=1;            AC_SUBST([HAVE_DECL_LOGB])
  HAVE_DECL_REMAINDER=1;       AC_SUBST([HAVE_DECL_REMAINDER])
  HAVE_DECL_REMAINDERL=1;      AC_SUBST([HAVE_DECL_REMAINDERL])
  HAVE_DECL_RINTF=1;           AC_SUBST([HAVE_DECL_RINTF])
  HAVE_DECL_ROUND=1;           AC_SUBST([HAVE_DECL_ROUND])
  HAVE_DECL_ROUNDF=1;          AC_SUBST([HAVE_DECL_ROUNDF])
  HAVE_DECL_ROUNDL=1;          AC_SUBST([HAVE_DECL_ROUNDL])
  HAVE_DECL_SINL=1;            AC_SUBST([HAVE_DECL_SINL])
  HAVE_DECL_SQRTL=1;           AC_SUBST([HAVE_DECL_SQRTL])
  HAVE_DECL_TANL=1;            AC_SUBST([HAVE_DECL_TANL])
  HAVE_DECL_TRUNC=1;           AC_SUBST([HAVE_DECL_TRUNC])
  HAVE_DECL_TRUNCF=1;          AC_SUBST([HAVE_DECL_TRUNCF])
  HAVE_DECL_TRUNCL=1;          AC_SUBST([HAVE_DECL_TRUNCL])
  REPLACE_CBRTF=0;             AC_SUBST([REPLACE_CBRTF])
  REPLACE_CBRTL=0;             AC_SUBST([REPLACE_CBRTL])
  REPLACE_CEIL=0;              AC_SUBST([REPLACE_CEIL])
  REPLACE_CEILF=0;             AC_SUBST([REPLACE_CEILF])
  REPLACE_CEILL=0;             AC_SUBST([REPLACE_CEILL])
  REPLACE_EXPM1=0;             AC_SUBST([REPLACE_EXPM1])
  REPLACE_EXPM1F=0;            AC_SUBST([REPLACE_EXPM1F])
  REPLACE_EXP2=0;              AC_SUBST([REPLACE_EXP2])
  REPLACE_EXP2L=0;             AC_SUBST([REPLACE_EXP2L])
  REPLACE_FABSL=0;             AC_SUBST([REPLACE_FABSL])
  REPLACE_FLOOR=0;             AC_SUBST([REPLACE_FLOOR])
  REPLACE_FLOORF=0;            AC_SUBST([REPLACE_FLOORF])
  REPLACE_FLOORL=0;            AC_SUBST([REPLACE_FLOORL])
  REPLACE_FMA=0;               AC_SUBST([REPLACE_FMA])
  REPLACE_FMAF=0;              AC_SUBST([REPLACE_FMAF])
  REPLACE_FMAL=0;              AC_SUBST([REPLACE_FMAL])
  REPLACE_FMOD=0;              AC_SUBST([REPLACE_FMOD])
  REPLACE_FMODF=0;             AC_SUBST([REPLACE_FMODF])
  REPLACE_FMODL=0;             AC_SUBST([REPLACE_FMODL])
  REPLACE_FREXPF=0;            AC_SUBST([REPLACE_FREXPF])
  REPLACE_FREXP=0;             AC_SUBST([REPLACE_FREXP])
  REPLACE_FREXPL=0;            AC_SUBST([REPLACE_FREXPL])
  REPLACE_HUGE_VAL=0;          AC_SUBST([REPLACE_HUGE_VAL])
  REPLACE_HYPOT=0;             AC_SUBST([REPLACE_HYPOT])
  REPLACE_HYPOTF=0;            AC_SUBST([REPLACE_HYPOTF])
  REPLACE_HYPOTL=0;            AC_SUBST([REPLACE_HYPOTL])
  REPLACE_ILOGB=0;             AC_SUBST([REPLACE_ILOGB])
  REPLACE_ILOGBF=0;            AC_SUBST([REPLACE_ILOGBF])
  REPLACE_ISFINITE=0;          AC_SUBST([REPLACE_ISFINITE])
  REPLACE_ISINF=0;             AC_SUBST([REPLACE_ISINF])
  REPLACE_ISNAN=0;             AC_SUBST([REPLACE_ISNAN])
  REPLACE_LDEXPL=0;            AC_SUBST([REPLACE_LDEXPL])
  REPLACE_LOG=0;               AC_SUBST([REPLACE_LOG])
  REPLACE_LOGF=0;              AC_SUBST([REPLACE_LOGF])
  REPLACE_LOGL=0;              AC_SUBST([REPLACE_LOGL])
  REPLACE_LOG10=0;             AC_SUBST([REPLACE_LOG10])
  REPLACE_LOG10F=0;            AC_SUBST([REPLACE_LOG10F])
  REPLACE_LOG10L=0;            AC_SUBST([REPLACE_LOG10L])
  REPLACE_LOG1P=0;             AC_SUBST([REPLACE_LOG1P])
  REPLACE_LOG1PF=0;            AC_SUBST([REPLACE_LOG1PF])
  REPLACE_LOG1PL=0;            AC_SUBST([REPLACE_LOG1PL])
  REPLACE_LOG2=0;              AC_SUBST([REPLACE_LOG2])
  REPLACE_LOG2F=0;             AC_SUBST([REPLACE_LOG2F])
  REPLACE_LOG2L=0;             AC_SUBST([REPLACE_LOG2L])
  REPLACE_LOGB=0;              AC_SUBST([REPLACE_LOGB])
  REPLACE_LOGBF=0;             AC_SUBST([REPLACE_LOGBF])
  REPLACE_LOGBL=0;             AC_SUBST([REPLACE_LOGBL])
  REPLACE_MODF=0;              AC_SUBST([REPLACE_MODF])
  REPLACE_MODFF=0;             AC_SUBST([REPLACE_MODFF])
  REPLACE_MODFL=0;             AC_SUBST([REPLACE_MODFL])
  REPLACE_NAN=0;               AC_SUBST([REPLACE_NAN])
  REPLACE_REMAINDER=0;         AC_SUBST([REPLACE_REMAINDER])
  REPLACE_REMAINDERF=0;        AC_SUBST([REPLACE_REMAINDERF])
  REPLACE_REMAINDERL=0;        AC_SUBST([REPLACE_REMAINDERL])
  REPLACE_ROUND=0;             AC_SUBST([REPLACE_ROUND])
  REPLACE_ROUNDF=0;            AC_SUBST([REPLACE_ROUNDF])
  REPLACE_ROUNDL=0;            AC_SUBST([REPLACE_ROUNDL])
  REPLACE_SIGNBIT=0;           AC_SUBST([REPLACE_SIGNBIT])
  REPLACE_SIGNBIT_USING_GCC=0; AC_SUBST([REPLACE_SIGNBIT_USING_GCC])
  REPLACE_SQRTL=0;             AC_SUBST([REPLACE_SQRTL])
  REPLACE_TRUNC=0;             AC_SUBST([REPLACE_TRUNC])
  REPLACE_TRUNCF=0;            AC_SUBST([REPLACE_TRUNCF])
  REPLACE_TRUNCL=0;            AC_SUBST([REPLACE_TRUNCL])
])

# gl_LONG_DOUBLE_VS_DOUBLE
# determines whether 'long double' and 'double' have the same representation.
# Sets variable HAVE_SAME_LONG_DOUBLE_AS_DOUBLE to 0 or 1, and defines
# HAVE_SAME_LONG_DOUBLE_AS_DOUBLE accordingly.
# The currently known platforms where this is the case are:
# Linux/HPPA, Minix 3.1.8, AIX 5, AIX 6 and 7 with xlc, MSVC 9.
AC_DEFUN([gl_LONG_DOUBLE_VS_DOUBLE],
[
  AC_CACHE_CHECK([whether long double and double are the same],
    [gl_cv_long_double_equals_double],
    [AC_COMPILE_IFELSE(
       [AC_LANG_PROGRAM([[#include <float.h>]],
          [[typedef int check[sizeof (long double) == sizeof (double)
                              && LDBL_MANT_DIG == DBL_MANT_DIG
                              && LDBL_MAX_EXP == DBL_MAX_EXP
                              && LDBL_MIN_EXP == DBL_MIN_EXP
                              ? 1 : -1];
          ]])],
       [gl_cv_long_double_equals_double=yes],
       [gl_cv_long_double_equals_double=no])
    ])
  if test $gl_cv_long_double_equals_double = yes; then
    AC_DEFINE([HAVE_SAME_LONG_DOUBLE_AS_DOUBLE], [1],
      [Define to 1 if 'long double' and 'double' have the same representation.])
    HAVE_SAME_LONG_DOUBLE_AS_DOUBLE=1
  else
    HAVE_SAME_LONG_DOUBLE_AS_DOUBLE=0
  fi
  AC_SUBST([HAVE_SAME_LONG_DOUBLE_AS_DOUBLE])
])