annotate m4/math_h.m4 @ 15845:622d3734ca5a

frexpf: Work around problems on IRIX and mingw. * lib/math.in.h (frexpf): Consider also REPLACE_FREXPF. * m4/math_h.m4 (gl_MATH_H_DEFAULTS): Initialize REPLACE_FREXPF. * m4/frexpf.m4 (gl_FUNC_FREXPF_WORKS): New macro. (gl_FUNC_FREXPF): Invoke it. Set REPLACE_FREXPF. * modules/frexpf (Depends-on, configure.ac): Consider REPLACE_FREXPF. * modules/math (Makefile.am): Substitute REPLACE_FREXPF. * doc/posix-functions/frexpf.texi: Mention the IRIX and mingw problems.
author Bruno Haible <bruno@clisp.org>
date Fri, 07 Oct 2011 00:59:38 +0200
parents d26d12e238e1
children cd98f212217e
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
15845
622d3734ca5a frexpf: Work around problems on IRIX and mingw.
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1 # math_h.m4 serial 30
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97fc9a21a8fb maint: update almost all copyright ranges to include 2011
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2 dnl Copyright (C) 2007-2011 Free Software Foundation, Inc.
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3 dnl This file is free software; the Free Software Foundation
c115624bf99a New module 'math'. <math.h> replaces mathl.h.
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4 dnl gives unlimited permission to copy and/or distribute it,
c115624bf99a New module 'math'. <math.h> replaces mathl.h.
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5 dnl with or without modifications, as long as this notice is preserved.
c115624bf99a New module 'math'. <math.h> replaces mathl.h.
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6
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7 AC_DEFUN([gl_MATH_H],
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8 [
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9 AC_REQUIRE([gl_MATH_H_DEFAULTS])
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10 gl_CHECK_NEXT_HEADERS([math.h])
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11 AC_REQUIRE([AC_C_INLINE])
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12
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13 AC_CACHE_CHECK([whether NAN macro works], [gl_cv_header_math_nan_works],
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14 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[@%:@include <math.h>]],
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15 [[/* Solaris 10 has a broken definition of NAN. Other platforms
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16 fail to provide NAN, or provide it only in C99 mode; this
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17 test only needs to fail when NAN is provided but wrong. */
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18 float f = 1.0f;
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19 #ifdef NAN
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20 f = NAN;
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21 #endif
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22 return f == 0;]])],
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23 [gl_cv_header_math_nan_works=yes],
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24 [gl_cv_header_math_nan_works=no])])
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25 if test $gl_cv_header_math_nan_works = no; then
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26 REPLACE_NAN=1
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27 fi
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28 AC_CACHE_CHECK([whether HUGE_VAL works], [gl_cv_header_math_huge_val_works],
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29 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[@%:@include <math.h>]],
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30 [[/* Solaris 10 has a broken definition of HUGE_VAL. */
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31 double d = HUGE_VAL;
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32 return d == 0;]])],
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33 [gl_cv_header_math_huge_val_works=yes],
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34 [gl_cv_header_math_huge_val_works=no])])
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35 if test $gl_cv_header_math_huge_val_works = no; then
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36 REPLACE_HUGE_VAL=1
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37 fi
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38
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39 dnl Check for declarations of anything we want to poison if the
2c14f1e449e5 warn-on-use: use instead of link-warning
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40 dnl corresponding gnulib module is not in use.
15830
8cbd3394f44f New module 'fabsf'.
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41 gl_WARN_ON_USE_PREPARE([[#include <math.h>]],
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42 [acosl asinl atanl ceilf ceill cosl expl fabsf floorf floorl fmodf
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43 frexpf frexpl
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0e07b354626a New module 'modff'.
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44 ldexpl logb logl modff round roundf roundl sinl sqrtl
0e07b354626a New module 'modff'.
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45 tanl trunc truncf truncl])
8186
c115624bf99a New module 'math'. <math.h> replaces mathl.h.
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46 ])
c115624bf99a New module 'math'. <math.h> replaces mathl.h.
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47
c115624bf99a New module 'math'. <math.h> replaces mathl.h.
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48 AC_DEFUN([gl_MATH_MODULE_INDICATOR],
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49 [
c115624bf99a New module 'math'. <math.h> replaces mathl.h.
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50 dnl Use AC_REQUIRE here, so that the default settings are expanded once only.
c115624bf99a New module 'math'. <math.h> replaces mathl.h.
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51 AC_REQUIRE([gl_MATH_H_DEFAULTS])
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fc8c984b0733 Factorize common .m4 code.
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52 gl_MODULE_INDICATOR_SET_VARIABLE([$1])
12960
1583e59dfb92 Tests of module 'math' in C++ mode.
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53 dnl Define it also as a C macro, for the benefit of the unit tests.
13071
b2385e7b332e Distinguish two kinds of module indicators.
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54 gl_MODULE_INDICATOR_FOR_TESTS([$1])
8186
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55 ])
c115624bf99a New module 'math'. <math.h> replaces mathl.h.
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56
c115624bf99a New module 'math'. <math.h> replaces mathl.h.
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57 AC_DEFUN([gl_MATH_H_DEFAULTS],
c115624bf99a New module 'math'. <math.h> replaces mathl.h.
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58 [
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59 GNULIB_ACOSL=0; AC_SUBST([GNULIB_ACOSL])
73d9dd27dc41 New modules acosl, asinl, atanl, cosl, expl, logl, sinl, sqrtl, tanl.
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60 GNULIB_ASINL=0; AC_SUBST([GNULIB_ASINL])
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61 GNULIB_ATANL=0; AC_SUBST([GNULIB_ATANL])
13982
2c35dd380b9e New module 'ceil-ieee'.
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62 GNULIB_CEIL=0; AC_SUBST([GNULIB_CEIL])
9420
9e0484f26251 Fix link errors with Sun C 5.0 on Solaris 10.
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parents: 9414
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63 GNULIB_CEILF=0; AC_SUBST([GNULIB_CEILF])
9e0484f26251 Fix link errors with Sun C 5.0 on Solaris 10.
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parents: 9414
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64 GNULIB_CEILL=0; AC_SUBST([GNULIB_CEILL])
12752
73d9dd27dc41 New modules acosl, asinl, atanl, cosl, expl, logl, sinl, sqrtl, tanl.
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parents: 12726
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65 GNULIB_COSL=0; AC_SUBST([GNULIB_COSL])
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parents: 12726
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66 GNULIB_EXPL=0; AC_SUBST([GNULIB_EXPL])
15828
36ce57192e3b New module 'fabsf'.
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67 GNULIB_FABSF=0; AC_SUBST([GNULIB_FABSF])
13981
8a7dbd29e9a5 New module 'floor-ieee'.
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68 GNULIB_FLOOR=0; AC_SUBST([GNULIB_FLOOR])
9420
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69 GNULIB_FLOORF=0; AC_SUBST([GNULIB_FLOORF])
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70 GNULIB_FLOORL=0; AC_SUBST([GNULIB_FLOORL])
15832
022f031c4bdf New module 'fmodf'.
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71 GNULIB_FMODF=0; AC_SUBST([GNULIB_FMODF])
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72 GNULIB_FREXPF=0; AC_SUBST([GNULIB_FREXPF])
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73 GNULIB_FREXP=0; AC_SUBST([GNULIB_FREXP])
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74 GNULIB_FREXPL=0; AC_SUBST([GNULIB_FREXPL])
9423
fa47aa8bb105 Use REPLACE_ISFINITE instead of HAVE_DECL_ISFINITE.
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parents: 9420
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75 GNULIB_ISFINITE=0; AC_SUBST([GNULIB_ISFINITE])
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7a5cfea8469f Add isinf module.
Ben Pfaff <blp@cs.stanford.edu>
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76 GNULIB_ISINF=0; AC_SUBST([GNULIB_ISINF])
10267
bf763f10f63c Add isnan module.
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parents: 9921
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77 GNULIB_ISNAN=0; AC_SUBST([GNULIB_ISNAN])
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678640901735 Move the isnanf(), isnand(), isnanl() declarations to <math.h>.
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78 GNULIB_ISNANF=0; AC_SUBST([GNULIB_ISNANF])
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79 GNULIB_ISNAND=0; AC_SUBST([GNULIB_ISNAND])
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parents: 10287
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80 GNULIB_ISNANL=0; AC_SUBST([GNULIB_ISNANL])
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81 GNULIB_LDEXPL=0; AC_SUBST([GNULIB_LDEXPL])
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d3ea0f2aacfc logb: Provide missing declaration for Cygwin.
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82 GNULIB_LOGB=0; AC_SUBST([GNULIB_LOGB])
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83 GNULIB_LOGL=0; AC_SUBST([GNULIB_LOGL])
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84 GNULIB_MODFF=0; AC_SUBST([GNULIB_MODFF])
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85 GNULIB_ROUND=0; AC_SUBST([GNULIB_ROUND])
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86 GNULIB_ROUNDF=0; AC_SUBST([GNULIB_ROUNDF])
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87 GNULIB_ROUNDL=0; AC_SUBST([GNULIB_ROUNDL])
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88 GNULIB_SIGNBIT=0; AC_SUBST([GNULIB_SIGNBIT])
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diff changeset
89 GNULIB_SINL=0; AC_SUBST([GNULIB_SINL])
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parents: 12726
diff changeset
90 GNULIB_SQRTL=0; AC_SUBST([GNULIB_SQRTL])
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parents: 12726
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91 GNULIB_TANL=0; AC_SUBST([GNULIB_TANL])
9420
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92 GNULIB_TRUNC=0; AC_SUBST([GNULIB_TRUNC])
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parents: 9414
diff changeset
93 GNULIB_TRUNCF=0; AC_SUBST([GNULIB_TRUNCF])
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parents: 9414
diff changeset
94 GNULIB_TRUNCL=0; AC_SUBST([GNULIB_TRUNCL])
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d8d194025f40 Provide the option to declare the mathl functions also when the 'mathl'
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95 dnl Assume proper GNU behavior unless another module says otherwise.
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diff changeset
96 HAVE_ACOSL=1; AC_SUBST([HAVE_ACOSL])
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parents: 12726
diff changeset
97 HAVE_ASINL=1; AC_SUBST([HAVE_ASINL])
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parents: 12726
diff changeset
98 HAVE_ATANL=1; AC_SUBST([HAVE_ATANL])
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Bruno Haible <bruno@clisp.org>
parents: 12726
diff changeset
99 HAVE_COSL=1; AC_SUBST([HAVE_COSL])
73d9dd27dc41 New modules acosl, asinl, atanl, cosl, expl, logl, sinl, sqrtl, tanl.
Bruno Haible <bruno@clisp.org>
parents: 12726
diff changeset
100 HAVE_EXPL=1; AC_SUBST([HAVE_EXPL])
15828
36ce57192e3b New module 'fabsf'.
Bruno Haible <bruno@clisp.org>
parents: 14079
diff changeset
101 HAVE_FABSF=1; AC_SUBST([HAVE_FABSF])
15832
022f031c4bdf New module 'fmodf'.
Bruno Haible <bruno@clisp.org>
parents: 15830
diff changeset
102 HAVE_FMODF=1; AC_SUBST([HAVE_FMODF])
15841
d26d12e238e1 New module 'frexpf'.
Bruno Haible <bruno@clisp.org>
parents: 15838
diff changeset
103 HAVE_FREXPF=1; AC_SUBST([HAVE_FREXPF])
10667
678640901735 Move the isnanf(), isnand(), isnanl() declarations to <math.h>.
Bruno Haible <bruno@clisp.org>
parents: 10287
diff changeset
104 HAVE_ISNANF=1; AC_SUBST([HAVE_ISNANF])
678640901735 Move the isnanf(), isnand(), isnanl() declarations to <math.h>.
Bruno Haible <bruno@clisp.org>
parents: 10287
diff changeset
105 HAVE_ISNAND=1; AC_SUBST([HAVE_ISNAND])
678640901735 Move the isnanf(), isnand(), isnanl() declarations to <math.h>.
Bruno Haible <bruno@clisp.org>
parents: 10287
diff changeset
106 HAVE_ISNANL=1; AC_SUBST([HAVE_ISNANL])
12752
73d9dd27dc41 New modules acosl, asinl, atanl, cosl, expl, logl, sinl, sqrtl, tanl.
Bruno Haible <bruno@clisp.org>
parents: 12726
diff changeset
107 HAVE_LOGL=1; AC_SUBST([HAVE_LOGL])
15838
0e07b354626a New module 'modff'.
Bruno Haible <bruno@clisp.org>
parents: 15832
diff changeset
108 HAVE_MODFF=1; AC_SUBST([HAVE_MODFF])
12752
73d9dd27dc41 New modules acosl, asinl, atanl, cosl, expl, logl, sinl, sqrtl, tanl.
Bruno Haible <bruno@clisp.org>
parents: 12726
diff changeset
109 HAVE_SINL=1; AC_SUBST([HAVE_SINL])
73d9dd27dc41 New modules acosl, asinl, atanl, cosl, expl, logl, sinl, sqrtl, tanl.
Bruno Haible <bruno@clisp.org>
parents: 12726
diff changeset
110 HAVE_SQRTL=1; AC_SUBST([HAVE_SQRTL])
73d9dd27dc41 New modules acosl, asinl, atanl, cosl, expl, logl, sinl, sqrtl, tanl.
Bruno Haible <bruno@clisp.org>
parents: 12726
diff changeset
111 HAVE_TANL=1; AC_SUBST([HAVE_TANL])
9645
c8174371956e Exploit the __builtin_signbit GCC built-in.
Bruno Haible <bruno@clisp.org>
parents: 9465
diff changeset
112 HAVE_DECL_ACOSL=1; AC_SUBST([HAVE_DECL_ACOSL])
c8174371956e Exploit the __builtin_signbit GCC built-in.
Bruno Haible <bruno@clisp.org>
parents: 9465
diff changeset
113 HAVE_DECL_ASINL=1; AC_SUBST([HAVE_DECL_ASINL])
c8174371956e Exploit the __builtin_signbit GCC built-in.
Bruno Haible <bruno@clisp.org>
parents: 9465
diff changeset
114 HAVE_DECL_ATANL=1; AC_SUBST([HAVE_DECL_ATANL])
13142
6b79b839590c math: Fix some C++ test errors on Cygwin.
Bruno Haible <bruno@clisp.org>
parents: 13071
diff changeset
115 HAVE_DECL_CEILF=1; AC_SUBST([HAVE_DECL_CEILF])
6b79b839590c math: Fix some C++ test errors on Cygwin.
Bruno Haible <bruno@clisp.org>
parents: 13071
diff changeset
116 HAVE_DECL_CEILL=1; AC_SUBST([HAVE_DECL_CEILL])
9645
c8174371956e Exploit the __builtin_signbit GCC built-in.
Bruno Haible <bruno@clisp.org>
parents: 9465
diff changeset
117 HAVE_DECL_COSL=1; AC_SUBST([HAVE_DECL_COSL])
c8174371956e Exploit the __builtin_signbit GCC built-in.
Bruno Haible <bruno@clisp.org>
parents: 9465
diff changeset
118 HAVE_DECL_EXPL=1; AC_SUBST([HAVE_DECL_EXPL])
13142
6b79b839590c math: Fix some C++ test errors on Cygwin.
Bruno Haible <bruno@clisp.org>
parents: 13071
diff changeset
119 HAVE_DECL_FLOORF=1; AC_SUBST([HAVE_DECL_FLOORF])
6b79b839590c math: Fix some C++ test errors on Cygwin.
Bruno Haible <bruno@clisp.org>
parents: 13071
diff changeset
120 HAVE_DECL_FLOORL=1; AC_SUBST([HAVE_DECL_FLOORL])
9645
c8174371956e Exploit the __builtin_signbit GCC built-in.
Bruno Haible <bruno@clisp.org>
parents: 9465
diff changeset
121 HAVE_DECL_FREXPL=1; AC_SUBST([HAVE_DECL_FREXPL])
c8174371956e Exploit the __builtin_signbit GCC built-in.
Bruno Haible <bruno@clisp.org>
parents: 9465
diff changeset
122 HAVE_DECL_LDEXPL=1; AC_SUBST([HAVE_DECL_LDEXPL])
12927
d3ea0f2aacfc logb: Provide missing declaration for Cygwin.
Bruno Haible <bruno@clisp.org>
parents: 12766
diff changeset
123 HAVE_DECL_LOGB=1; AC_SUBST([HAVE_DECL_LOGB])
9645
c8174371956e Exploit the __builtin_signbit GCC built-in.
Bruno Haible <bruno@clisp.org>
parents: 9465
diff changeset
124 HAVE_DECL_LOGL=1; AC_SUBST([HAVE_DECL_LOGL])
13142
6b79b839590c math: Fix some C++ test errors on Cygwin.
Bruno Haible <bruno@clisp.org>
parents: 13071
diff changeset
125 HAVE_DECL_ROUND=1; AC_SUBST([HAVE_DECL_ROUND])
6b79b839590c math: Fix some C++ test errors on Cygwin.
Bruno Haible <bruno@clisp.org>
parents: 13071
diff changeset
126 HAVE_DECL_ROUNDF=1; AC_SUBST([HAVE_DECL_ROUNDF])
6b79b839590c math: Fix some C++ test errors on Cygwin.
Bruno Haible <bruno@clisp.org>
parents: 13071
diff changeset
127 HAVE_DECL_ROUNDL=1; AC_SUBST([HAVE_DECL_ROUNDL])
9645
c8174371956e Exploit the __builtin_signbit GCC built-in.
Bruno Haible <bruno@clisp.org>
parents: 9465
diff changeset
128 HAVE_DECL_SINL=1; AC_SUBST([HAVE_DECL_SINL])
c8174371956e Exploit the __builtin_signbit GCC built-in.
Bruno Haible <bruno@clisp.org>
parents: 9465
diff changeset
129 HAVE_DECL_SQRTL=1; AC_SUBST([HAVE_DECL_SQRTL])
c8174371956e Exploit the __builtin_signbit GCC built-in.
Bruno Haible <bruno@clisp.org>
parents: 9465
diff changeset
130 HAVE_DECL_TANL=1; AC_SUBST([HAVE_DECL_TANL])
c8174371956e Exploit the __builtin_signbit GCC built-in.
Bruno Haible <bruno@clisp.org>
parents: 9465
diff changeset
131 HAVE_DECL_TRUNC=1; AC_SUBST([HAVE_DECL_TRUNC])
c8174371956e Exploit the __builtin_signbit GCC built-in.
Bruno Haible <bruno@clisp.org>
parents: 9465
diff changeset
132 HAVE_DECL_TRUNCF=1; AC_SUBST([HAVE_DECL_TRUNCF])
13142
6b79b839590c math: Fix some C++ test errors on Cygwin.
Bruno Haible <bruno@clisp.org>
parents: 13071
diff changeset
133 HAVE_DECL_TRUNCL=1; AC_SUBST([HAVE_DECL_TRUNCL])
13982
2c35dd380b9e New module 'ceil-ieee'.
Bruno Haible <bruno@clisp.org>
parents: 13981
diff changeset
134 REPLACE_CEIL=0; AC_SUBST([REPLACE_CEIL])
9645
c8174371956e Exploit the __builtin_signbit GCC built-in.
Bruno Haible <bruno@clisp.org>
parents: 9465
diff changeset
135 REPLACE_CEILF=0; AC_SUBST([REPLACE_CEILF])
c8174371956e Exploit the __builtin_signbit GCC built-in.
Bruno Haible <bruno@clisp.org>
parents: 9465
diff changeset
136 REPLACE_CEILL=0; AC_SUBST([REPLACE_CEILL])
13981
8a7dbd29e9a5 New module 'floor-ieee'.
Bruno Haible <bruno@clisp.org>
parents: 13979
diff changeset
137 REPLACE_FLOOR=0; AC_SUBST([REPLACE_FLOOR])
9645
c8174371956e Exploit the __builtin_signbit GCC built-in.
Bruno Haible <bruno@clisp.org>
parents: 9465
diff changeset
138 REPLACE_FLOORF=0; AC_SUBST([REPLACE_FLOORF])
c8174371956e Exploit the __builtin_signbit GCC built-in.
Bruno Haible <bruno@clisp.org>
parents: 9465
diff changeset
139 REPLACE_FLOORL=0; AC_SUBST([REPLACE_FLOORL])
15845
622d3734ca5a frexpf: Work around problems on IRIX and mingw.
Bruno Haible <bruno@clisp.org>
parents: 15841
diff changeset
140 REPLACE_FREXPF=0; AC_SUBST([REPLACE_FREXPF])
9645
c8174371956e Exploit the __builtin_signbit GCC built-in.
Bruno Haible <bruno@clisp.org>
parents: 9465
diff changeset
141 REPLACE_FREXP=0; AC_SUBST([REPLACE_FREXP])
c8174371956e Exploit the __builtin_signbit GCC built-in.
Bruno Haible <bruno@clisp.org>
parents: 9465
diff changeset
142 REPLACE_FREXPL=0; AC_SUBST([REPLACE_FREXPL])
9898
02bfc9acab82 Work around Solaris 10 math.h bug.
Eric Blake <ebb9@byu.net>
parents: 9645
diff changeset
143 REPLACE_HUGE_VAL=0; AC_SUBST([REPLACE_HUGE_VAL])
9645
c8174371956e Exploit the __builtin_signbit GCC built-in.
Bruno Haible <bruno@clisp.org>
parents: 9465
diff changeset
144 REPLACE_ISFINITE=0; AC_SUBST([REPLACE_ISFINITE])
10287
7a5cfea8469f Add isinf module.
Ben Pfaff <blp@cs.stanford.edu>
parents: 10267
diff changeset
145 REPLACE_ISINF=0; AC_SUBST([REPLACE_ISINF])
10267
bf763f10f63c Add isnan module.
Ben Pfaff <blp@cs.stanford.edu>
parents: 9921
diff changeset
146 REPLACE_ISNAN=0; AC_SUBST([REPLACE_ISNAN])
9645
c8174371956e Exploit the __builtin_signbit GCC built-in.
Bruno Haible <bruno@clisp.org>
parents: 9465
diff changeset
147 REPLACE_LDEXPL=0; AC_SUBST([REPLACE_LDEXPL])
9898
02bfc9acab82 Work around Solaris 10 math.h bug.
Eric Blake <ebb9@byu.net>
parents: 9645
diff changeset
148 REPLACE_NAN=0; AC_SUBST([REPLACE_NAN])
9645
c8174371956e Exploit the __builtin_signbit GCC built-in.
Bruno Haible <bruno@clisp.org>
parents: 9465
diff changeset
149 REPLACE_ROUND=0; AC_SUBST([REPLACE_ROUND])
c8174371956e Exploit the __builtin_signbit GCC built-in.
Bruno Haible <bruno@clisp.org>
parents: 9465
diff changeset
150 REPLACE_ROUNDF=0; AC_SUBST([REPLACE_ROUNDF])
c8174371956e Exploit the __builtin_signbit GCC built-in.
Bruno Haible <bruno@clisp.org>
parents: 9465
diff changeset
151 REPLACE_ROUNDL=0; AC_SUBST([REPLACE_ROUNDL])
c8174371956e Exploit the __builtin_signbit GCC built-in.
Bruno Haible <bruno@clisp.org>
parents: 9465
diff changeset
152 REPLACE_SIGNBIT=0; AC_SUBST([REPLACE_SIGNBIT])
c8174371956e Exploit the __builtin_signbit GCC built-in.
Bruno Haible <bruno@clisp.org>
parents: 9465
diff changeset
153 REPLACE_SIGNBIT_USING_GCC=0; AC_SUBST([REPLACE_SIGNBIT_USING_GCC])
13983
ace70389132d New module 'trunc-ieee'.
Bruno Haible <bruno@clisp.org>
parents: 13982
diff changeset
154 REPLACE_TRUNC=0; AC_SUBST([REPLACE_TRUNC])
13979
84d7ae75b38f New module 'truncf-ieee'.
Bruno Haible <bruno@clisp.org>
parents: 13142
diff changeset
155 REPLACE_TRUNCF=0; AC_SUBST([REPLACE_TRUNCF])
9913
d3f5a70dc1ba Make truncl work on OSF/1 4.0.
Bruno Haible <bruno@clisp.org>
parents: 9900
diff changeset
156 REPLACE_TRUNCL=0; AC_SUBST([REPLACE_TRUNCL])
8186
c115624bf99a New module 'math'. <math.h> replaces mathl.h.
Bruno Haible <bruno@clisp.org>
parents:
diff changeset
157 ])