diff options
Diffstat (limited to 'gl/m4/math_h.m4')
| -rw-r--r-- | gl/m4/math_h.m4 | 391 |
1 files changed, 391 insertions, 0 deletions
diff --git a/gl/m4/math_h.m4 b/gl/m4/math_h.m4 new file mode 100644 index 0000000..a08526a --- /dev/null +++ b/gl/m4/math_h.m4 @@ -0,0 +1,391 @@ +# math_h.m4 serial 125 +dnl Copyright (C) 2007-2022 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_ONCE([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]) +]) + +# gl_MATH_MODULE_INDICATOR([modulename]) +# sets the shell variable that indicates the presence of the given module +# to a C preprocessor expression that will evaluate to 1. +# This macro invocation must not occur in macros that are AC_REQUIREd. +AC_DEFUN([gl_MATH_MODULE_INDICATOR], +[ + dnl Ensure to expand the default settings once only. + gl_MATH_H_REQUIRE_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]) +]) + +# Initializes the default values for AC_SUBSTed shell variables. +# This macro must not be AC_REQUIREd. It must only be invoked, and only +# outside of macros or in macros that are not AC_REQUIREd. +AC_DEFUN([gl_MATH_H_REQUIRE_DEFAULTS], +[ + m4_defun(GL_MODULE_INDICATOR_PREFIX[_MATH_H_MODULE_INDICATOR_DEFAULTS], [ + gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_ACOSF]) + gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_ACOSL]) + gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_ASINF]) + gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_ASINL]) + gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_ATANF]) + gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_ATANL]) + gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_ATAN2F]) + gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_CBRT]) + gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_CBRTF]) + gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_CBRTL]) + gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_CEIL]) + gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_CEILF]) + gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_CEILL]) + gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_COPYSIGN]) + gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_COPYSIGNF]) + gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_COPYSIGNL]) + gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_COSF]) + gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_COSL]) + gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_COSHF]) + gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_EXPF]) + gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_EXPL]) + gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_EXP2]) + gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_EXP2F]) + gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_EXP2L]) + gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_EXPM1]) + gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_EXPM1F]) + gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_EXPM1L]) + gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_FABSF]) + gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_FABSL]) + gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_FLOOR]) + gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_FLOORF]) + gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_FLOORL]) + gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_FMA]) + gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_FMAF]) + gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_FMAL]) + gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_FMOD]) + gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_FMODF]) + gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_FMODL]) + gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_FREXPF]) + gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_FREXP]) + gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_FREXPL]) + gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_HYPOT]) + gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_HYPOTF]) + gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_HYPOTL]) + gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_ILOGB]) + gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_ILOGBF]) + gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_ILOGBL]) + gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_ISFINITE]) + gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_ISINF]) + gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_ISNAN]) + gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_ISNANF]) + gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_ISNAND]) + gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_ISNANL]) + gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_LDEXPF]) + gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_LDEXPL]) + gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_LOG]) + gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_LOGF]) + gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_LOGL]) + gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_LOG10]) + gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_LOG10F]) + gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_LOG10L]) + gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_LOG1P]) + gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_LOG1PF]) + gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_LOG1PL]) + gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_LOG2]) + gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_LOG2F]) + gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_LOG2L]) + gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_LOGB]) + gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_LOGBF]) + gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_LOGBL]) + gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MODF]) + gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MODFF]) + gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MODFL]) + gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_POWF]) + gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_REMAINDER]) + gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_REMAINDERF]) + gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_REMAINDERL]) + gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_RINT]) + gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_RINTF]) + gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_RINTL]) + gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_ROUND]) + gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_ROUNDF]) + gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_ROUNDL]) + gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_SIGNBIT]) + gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_SINF]) + gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_SINL]) + gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_SINHF]) + gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_SQRTF]) + gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_SQRTL]) + gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_TANF]) + gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_TANL]) + gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_TANHF]) + gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_TRUNC]) + gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_TRUNCF]) + gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_TRUNCL]) + dnl Support Microsoft deprecated alias function names by default. + gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MDA_J0], [1]) + gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MDA_J1], [1]) + gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MDA_JN], [1]) + gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MDA_Y0], [1]) + gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MDA_Y1], [1]) + gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MDA_YN], [1]) + ]) + m4_require(GL_MODULE_INDICATOR_PREFIX[_MATH_H_MODULE_INDICATOR_DEFAULTS]) + AC_REQUIRE([gl_MATH_H_DEFAULTS]) +]) + +AC_DEFUN([gl_MATH_H_DEFAULTS], +[ + 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_ACOSF=0; AC_SUBST([REPLACE_ACOSF]) + REPLACE_ASINF=0; AC_SUBST([REPLACE_ASINF]) + REPLACE_ATANF=0; AC_SUBST([REPLACE_ATANF]) + REPLACE_ATAN2F=0; AC_SUBST([REPLACE_ATAN2F]) + 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_COSF=0; AC_SUBST([REPLACE_COSF]) + REPLACE_COSHF=0; AC_SUBST([REPLACE_COSHF]) + REPLACE_EXPF=0; AC_SUBST([REPLACE_EXPF]) + REPLACE_EXPL=0; AC_SUBST([REPLACE_EXPL]) + REPLACE_EXPM1=0; AC_SUBST([REPLACE_EXPM1]) + REPLACE_EXPM1F=0; AC_SUBST([REPLACE_EXPM1F]) + REPLACE_EXPM1L=0; AC_SUBST([REPLACE_EXPM1L]) + 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_ILOGBL=0; AC_SUBST([REPLACE_ILOGBL]) + 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_RINTL=0; AC_SUBST([REPLACE_RINTL]) + 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_BUILTINS=0; AC_SUBST([REPLACE_SIGNBIT_USING_BUILTINS]) + REPLACE_SINF=0; AC_SUBST([REPLACE_SINF]) + REPLACE_SINHF=0; AC_SUBST([REPLACE_SINHF]) + REPLACE_SQRTF=0; AC_SUBST([REPLACE_SQRTF]) + REPLACE_SQRTL=0; AC_SUBST([REPLACE_SQRTL]) + REPLACE_TANF=0; AC_SUBST([REPLACE_TANF]) + REPLACE_TANHF=0; AC_SUBST([REPLACE_TANHF]) + 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]) +]) |