HCoop / bpt / guile.git / blame
| Commit | Line | Data |
|---|---|---|
| b81eb646 LC |
1 | # mathfunc.m4 serial 6 |
| 2 | dnl Copyright (C) 2010-2011 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. | |
| 6 | ||
| 7 | # gl_MATHFUNC(FUNC, RETTYPE, PARAMTYPES) | |
| 8 | # -------------------------------------------------- | |
| 9 | # tests whether the function FUNC is available in libc or libm. | |
| 10 | # RETTYPE is the return type. PARAMTYPES is a parameter list, with parentheses. | |
| 11 | # It sets FUNC_LIBM to empty or "-lm" accordingly. | |
| 12 | ||
| 13 | AC_DEFUN([gl_MATHFUNC], | |
| 14 | [ | |
| 15 | dnl We need the RETTYPE and PARAMTYPES in order to force linking with the | |
| 16 | dnl function. With gcc >= 4.3 on glibc/x86_64, calls to the 'fabs' function | |
| 17 | dnl are inlined by the compiler, therefore linking of these calls does not | |
| 18 | dnl require -lm, but taking the function pointer of 'fabs' does. | |
| 19 | m4_pushdef([func], [$1]) | |
| 20 | m4_pushdef([FUNC], [m4_translit([$1],[abcdefghijklmnopqrstuvwxyz], | |
| 21 | [ABCDEFGHIJKLMNOPQRSTUVWXYZ])]) | |
| 22 | FUNC[]_LIBM= | |
| 23 | AC_CACHE_CHECK([whether func() can be used without linking with libm], | |
| 24 | [gl_cv_func_]func[_no_libm], | |
| 25 | [ | |
| 26 | AC_LINK_IFELSE( | |
| 27 | [AC_LANG_PROGRAM( | |
| 28 | [[#ifndef __NO_MATH_INLINES | |
| 29 | # define __NO_MATH_INLINES 1 /* for glibc */ | |
| 30 | #endif | |
| 31 | #include <math.h> | |
| 32 | $2 (*funcptr) $3 = ]func[; | |
| 33 | double d_ret;]], | |
| 34 | [[$2 y = funcptr ]m4_bpatsubst([m4_bpatsubst([m4_bpatsubst([$3], [int], [2])], [double \*], [&d_ret])], [double], [1.6180339887])[; | |
| 35 | return y < 0.3 || y > 1.7; | |
| 36 | ]])], | |
| 37 | [gl_cv_func_]func[_no_libm=yes], | |
| 38 | [gl_cv_func_]func[_no_libm=no]) | |
| 39 | ]) | |
| 40 | if test $gl_cv_func_[]func[]_no_libm = no; then | |
| 41 | AC_CACHE_CHECK([whether func() can be used with libm], | |
| 42 | [gl_cv_func_]func[_in_libm], | |
| 43 | [ | |
| 44 | save_LIBS="$LIBS" | |
| 45 | LIBS="$LIBS -lm" | |
| 46 | AC_LINK_IFELSE( | |
| 47 | [AC_LANG_PROGRAM( | |
| 48 | [[#ifndef __NO_MATH_INLINES | |
| 49 | # define __NO_MATH_INLINES 1 /* for glibc */ | |
| 50 | #endif | |
| 51 | #include <math.h> | |
| 52 | $2 (*funcptr) $3 = ]func[; | |
| 53 | double d_ret;]], | |
| 54 | [[$2 y = funcptr ]m4_bpatsubst([m4_bpatsubst([m4_bpatsubst([$3], [int], [2])], [double \*], [&d_ret])], [double], [1.6180339887])[; | |
| 55 | return y < 0.3 || y > 1.7; | |
| 56 | ]])], | |
| 57 | [gl_cv_func_]func[_in_libm=yes], | |
| 58 | [gl_cv_func_]func[_in_libm=no]) | |
| 59 | LIBS="$save_LIBS" | |
| 60 | ]) | |
| 61 | if test $gl_cv_func_[]func[]_in_libm = yes; then | |
| 62 | FUNC[]_LIBM=-lm | |
| 63 | fi | |
| 64 | fi | |
| 65 | AC_SUBST(FUNC[_LIBM]) | |
| 66 | m4_popdef([FUNC]) | |
| 67 | m4_popdef([func]) | |
| 68 | ]) | |
| 69 | ||
| 70 | # gl_COMMON_DOUBLE_MATHFUNC(FUNC) | |
| 71 | # ------------------------------- | |
| 72 | # tests whether the function FUNC is available in libc or libm. | |
| 73 | # It sets FUNC_LIBM to empty or "-lm" accordingly. | |
| 74 | # FUNC must be one of the following functions, that are present on all systems | |
| 75 | # and provided by libm on all systems except MacOS X, BeOS, Haiku: | |
| 76 | # acos asin atan atan2 cbrt cos cosh erf erfc exp fmod hypot j0 j1 jn lgamma | |
| 77 | # log log10 log1p pow remainder sin sinh sqrt tan tanh y0 y1 yn | |
| 78 | ||
| 79 | AC_DEFUN([gl_COMMON_DOUBLE_MATHFUNC], | |
| 80 | [ | |
| 81 | AC_REQUIRE([gl_COMMON_DOUBLE_MATHFUNC_TEST]) | |
| 82 | m4_pushdef([FUNC], [m4_translit([$1],[abcdefghijklmnopqrstuvwxyz], | |
| 83 | [ABCDEFGHIJKLMNOPQRSTUVWXYZ])]) | |
| 84 | FUNC[]_LIBM="$POW_LIBM" | |
| 85 | AC_SUBST(FUNC[_LIBM]) | |
| 86 | m4_popdef([FUNC]) | |
| 87 | ]) | |
| 88 | ||
| 89 | AC_DEFUN([gl_COMMON_DOUBLE_MATHFUNC_TEST], | |
| 90 | [ | |
| 91 | dnl We could use any of the following: | |
| 92 | dnl gl_MATHFUNC([acos], [double], [(double)]) | |
| 93 | dnl gl_MATHFUNC([asin], [double], [(double)]) | |
| 94 | dnl gl_MATHFUNC([atan], [double], [(double)]) | |
| 95 | dnl gl_MATHFUNC([atan2], [double], [(double, double)]) | |
| 96 | dnl gl_MATHFUNC([cbrt], [double], [(double)]) | |
| 97 | dnl gl_MATHFUNC([cos], [double], [(double)]) | |
| 98 | dnl gl_MATHFUNC([cosh], [double], [(double)]) | |
| 99 | dnl gl_MATHFUNC([erf], [double], [(double)]) | |
| 100 | dnl gl_MATHFUNC([erfc], [double], [(double)]) | |
| 101 | dnl gl_MATHFUNC([exp], [double], [(double)]) | |
| 102 | dnl gl_MATHFUNC([fmod], [double], [(double, double)]) | |
| 103 | dnl gl_MATHFUNC([hypot], [double], [(double, double)]) | |
| 104 | dnl gl_MATHFUNC([j0], [double], [(double)]) | |
| 105 | dnl gl_MATHFUNC([j1], [double], [(double)]) | |
| 106 | dnl gl_MATHFUNC([jn], [double], [(int, double)]) | |
| 107 | dnl gl_MATHFUNC([lgamma], [double], [(double)]) | |
| 108 | dnl gl_MATHFUNC([log], [double], [(double)]) | |
| 109 | dnl gl_MATHFUNC([log10], [double], [(double)]) | |
| 110 | dnl gl_MATHFUNC([log1p], [double], [(double)]) | |
| 111 | dnl gl_MATHFUNC([pow], [double], [(double, double)]) | |
| 112 | dnl gl_MATHFUNC([remainder], [double], [(double, double)]) | |
| 113 | dnl gl_MATHFUNC([sin], [double], [(double)]) | |
| 114 | dnl gl_MATHFUNC([sinh], [double], [(double)]) | |
| 115 | dnl gl_MATHFUNC([sqrt], [double], [(double)]) | |
| 116 | dnl gl_MATHFUNC([tan], [double], [(double)]) | |
| 117 | dnl gl_MATHFUNC([tanh], [double], [(double)]) | |
| 118 | dnl gl_MATHFUNC([y0], [double], [(double)]) | |
| 119 | dnl gl_MATHFUNC([y1], [double], [(double)]) | |
| 120 | dnl gl_MATHFUNC([yn], [double], [(int, double)]) | |
| 121 | gl_MATHFUNC([pow], [double], [(double, double)]) | |
| 122 | ]) |