| # 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]) |
| ]) |
