Branch
Hash :
a923e066
Author :
Date :
2025-09-10T22:55:08
math-h: Remove support for IRIX. * lib/math.in.h (FP_ILOGB0, FP_ILOGBNAN): Remove code for IRIX. (cbrtf): Test HAVE_CBRTF instead of HAVE_DECL_CBRTF. (cbrtl): Test HAVE_CBRTL instead of HAVE_DECL_CBRTL. (copysignf): Test HAVE_COPYSIGNF instead of HAVE_DECL_COPYSIGNF. (exp2f): Test HAVE_EXP2F instead of HAVE_DECL_EXP2F. (exp2): Test HAVE_EXP2 instead of HAVE_DECL_EXP2. (exp2l): Test HAVE_EXP2L instead of HAVE_DECL_EXP2L. (expm1l): Test HAVE_EXPM1L instead of HAVE_DECL_EXPM1L. (log2f): Test HAVE_LOG2F instead of HAVE_DECL_LOG2F. (log2): Test HAVE_LOG2 instead of HAVE_DECL_LOG2. (log2l): Test HAVE_LOG2L instead of HAVE_DECL_LOG2L. (remainder): Don't test HAVE_DECL_REMAINDER. (remainderl): Test HAVE_REMAINDERL instead of HAVE_DECL_REMAINDERL. (rintf): Test HAVE_RINTF instead of HAVE_DECL_RINTF. (roundf): Test HAVE_ROUNDF instead of HAVE_DECL_ROUNDF. (round): Test HAVE_ROUND instead of HAVE_DECL_ROUND. (roundl): Test HAVE_ROUNDL instead of HAVE_DECL_ROUNDL. (isnanf, isnand): Remove code for IRIX. * m4/math_h.m4 (gl_MATH_H_DEFAULTS): Initialize HAVE_COPYSIGNF, HAVE_EXP2, HAVE_EXP2F, HAVE_EXP2L, HAVE_EXPM1L, HAVE_LOG2, HAVE_LOG2F, HAVE_LOG2L, HAVE_REMAINDERL, HAVE_RINTF, HAVE_ROUND, HAVE_ROUNDF, HAVE_ROUNDL. Don't initialize HAVE_DECL_CBRTF, HAVE_DECL_CBRTL, HAVE_DECL_COPYSIGNF, HAVE_DECL_EXP2, HAVE_DECL_EXP2F, HAVE_DECL_EXP2L, HAVE_DECL_EXPM1L, HAVE_DECL_LOG2, HAVE_DECL_LOG2F, HAVE_DECL_LOG2L, HAVE_DECL_REMAINDER, HAVE_DECL_REMAINDERL, HAVE_DECL_RINTF, HAVE_DECL_ROUND, HAVE_DECL_ROUNDF, HAVE_DECL_ROUNDL. * modules/math-h (Makefile.am): Substitute HAVE_COPYSIGNF, HAVE_EXP2, HAVE_EXP2F, HAVE_EXP2L, HAVE_EXPM1L, HAVE_LOG2, HAVE_LOG2F, HAVE_LOG2L, HAVE_REMAINDERL, HAVE_RINTF, HAVE_ROUND, HAVE_ROUNDF, HAVE_ROUNDL. Don't substitute HAVE_DECL_CBRTF, HAVE_DECL_CBRTL, HAVE_DECL_COPYSIGNF, HAVE_DECL_EXP2, HAVE_DECL_EXP2F, HAVE_DECL_EXP2L, HAVE_DECL_EXPM1L, HAVE_DECL_LOG2, HAVE_DECL_LOG2F, HAVE_DECL_LOG2L, HAVE_DECL_REMAINDER, HAVE_DECL_REMAINDERL, HAVE_DECL_RINTF, HAVE_DECL_ROUND, HAVE_DECL_ROUNDF, HAVE_DECL_ROUNDL. * m4/cbrtf.m4 (gl_FUNC_CBRTF_WORKS): Remove macro. (gl_FUNC_CBRTF): Don't invoke it. Don't set HAVE_DECL_CBRTF. * m4/cbrtl.m4 (gl_FUNC_CBRTL): Don't set HAVE_DECL_CBRTL. Remove test regarding cbrtl (-0.0L). * lib/cbrtl.c (cbrtl): Remove code for IRIX. * m4/copysignf.m4 (gl_FUNC_COPYSIGNF): Don't set HAVE_DECL_COPYSIGNF. * m4/exp2f.m4 (gl_FUNC_EXP2F): Don't set HAVE_DECL_EXP2F. * m4/exp2.m4 (gl_FUNC_EXP2): Don't set HAVE_DECL_EXP2. * m4/exp2l.m4 (gl_FUNC_EXP2L): Don't set HAVE_DECL_EXP2L. Remove code for IRIX. Remove test regarding exp2l (-Inf). * m4/expm1l.m4 (gl_FUNC_EXPM1L): Don't set HAVE_DECL_EXPM1L. Remove code for IRIX. * m4/log2f.m4 (gl_FUNC_LOG2F): Don't set HAVE_DECL_LOG2F. * m4/log2.m4 (gl_FUNC_LOG2): Don't set HAVE_DECL_LOG2. * lib/log2.c (log2): Remove code for IRIX. * m4/log2l.m4 (gl_FUNC_LOG2L): Don't set HAVE_DECL_LOG2L. Remove code for IRIX. * lib/log2l.c (log2l): Remove code for IRIX. * m4/remainder.m4 (gl_FUNC_REMAINDER): Don't set HAVE_DECL_REMAINDER. * m4/remainderl.m4 (gl_FUNC_REMAINDERL): Don't set HAVE_DECL_REMAINDERL. Remove code for IRIX. * m4/rintf.m4 (gl_FUNC_RINTF): Don't set HAVE_DECL_RINTF. * m4/roundf.m4 (gl_FUNC_ROUNDF): Don't set HAVE_DECL_ROUNDF. * m4/round.m4 (gl_FUNC_ROUND): Don't set HAVE_DECL_ROUND. * m4/roundl.m4 (gl_FUNC_ROUNDL): Don't set HAVE_DECL_ROUNDL.
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# remainderl.m4
# serial 19
dnl Copyright (C) 2012-2025 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.
dnl This file is offered as-is, without any warranty.
AC_DEFUN([gl_FUNC_REMAINDERL],
[
m4_divert_text([DEFAULTS], [gl_remainderl_required=plain])
AC_REQUIRE([gl_MATH_H_DEFAULTS])
AC_REQUIRE([gl_LONG_DOUBLE_VS_DOUBLE])
AC_REQUIRE([gl_FUNC_REMAINDER])
dnl Persuade glibc <math.h> to declare remainderl().
AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS])
dnl Test whether remainderl() exists. Assume that remainderl(), if it exists, is
dnl defined in the same library as remainder().
saved_LIBS="$LIBS"
LIBS="$LIBS $REMAINDER_LIBM"
AC_CACHE_CHECK([for remainderl],
[gl_cv_func_remainderl],
[
AC_LINK_IFELSE(
[AC_LANG_PROGRAM(
[[#ifndef __NO_MATH_INLINES
# define __NO_MATH_INLINES 1 /* for glibc */
#endif
#include <math.h>
extern
#ifdef __cplusplus
"C"
#endif
long double remainderl (long double, long double);
long double (*funcptr) (long double, long double) = remainderl;
long double x;
long double y;]],
[[return funcptr (x, y) > 1
|| remainderl (x, y) > 1;]])],
[gl_cv_func_remainderl=yes],
[gl_cv_func_remainderl=no])
])
LIBS="$saved_LIBS"
if test $gl_cv_func_remainderl = yes; then
HAVE_REMAINDERL=1
REMAINDERL_LIBM="$REMAINDER_LIBM"
saved_LIBS="$LIBS"
LIBS="$LIBS $REMAINDERL_LIBM"
gl_FUNC_REMAINDERL_WORKS
LIBS="$saved_LIBS"
case "$gl_cv_func_remainderl_works" in
*yes) ;;
*) REPLACE_REMAINDERL=1 ;;
esac
else
HAVE_REMAINDERL=0
fi
if test $HAVE_REMAINDERL = 0 || test $REPLACE_REMAINDERL = 1; then
dnl Find libraries needed to link lib/remainderl.c.
if test $HAVE_SAME_LONG_DOUBLE_AS_DOUBLE = 1; then
REMAINDERL_LIBM="$REMAINDER_LIBM"
else
AC_REQUIRE([gl_FUNC_FABSL])
AC_REQUIRE([gl_FUNC_FMODL])
AC_REQUIRE([gl_FUNC_ISNANL])
REMAINDERL_LIBM=
dnl Append $FABSL_LIBM to REMAINDERL_LIBM, avoiding gratuitous duplicates.
case " $REMAINDERL_LIBM " in
*" $FABSL_LIBM "*) ;;
*) REMAINDERL_LIBM="$REMAINDERL_LIBM $FABSL_LIBM" ;;
esac
dnl Append $FMODL_LIBM to REMAINDERL_LIBM, avoiding gratuitous duplicates.
case " $REMAINDERL_LIBM " in
*" $FMODL_LIBM "*) ;;
*) REMAINDERL_LIBM="$REMAINDERL_LIBM $FMODL_LIBM" ;;
esac
dnl Append $ISNANL_LIBM to REMAINDERL_LIBM, avoiding gratuitous duplicates.
case " $REMAINDERL_LIBM " in
*" $ISNANL_LIBM "*) ;;
*) REMAINDERL_LIBM="$REMAINDERL_LIBM $ISNANL_LIBM" ;;
esac
fi
fi
AC_SUBST([REMAINDERL_LIBM])
])
dnl Test whether remainderl() works.
dnl It produces completely wrong values on OpenBSD 5.1/SPARC.
dnl On musl 1.2.2/{arm64,s390x} and NetBSD 10.0, the result is accurate to only
dnl 16 digits.
AC_DEFUN([gl_FUNC_REMAINDERL_WORKS],
[
AC_REQUIRE([AC_PROG_CC])
AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
AC_CACHE_CHECK([whether remainderl works], [gl_cv_func_remainderl_works],
[
AC_RUN_IFELSE(
[AC_LANG_SOURCE([[
#ifndef __NO_MATH_INLINES
# define __NO_MATH_INLINES 1 /* for glibc */
#endif
#include <float.h>
#include <math.h>
/* Override the values of <float.h>, like done in float.in.h. */
#if defined __i386__ && (defined __BEOS__ || defined __OpenBSD__)
# undef LDBL_MANT_DIG
# define LDBL_MANT_DIG 64
# undef LDBL_MIN_EXP
# define LDBL_MIN_EXP (-16381)
# undef LDBL_MAX_EXP
# define LDBL_MAX_EXP 16384
#endif
#if defined __i386__ && (defined __FreeBSD__ || defined __DragonFly__)
# undef LDBL_MANT_DIG
# define LDBL_MANT_DIG 64
# undef LDBL_MIN_EXP
# define LDBL_MIN_EXP (-16381)
# undef LDBL_MAX_EXP
# define LDBL_MAX_EXP 16384
#endif
#if (defined _ARCH_PPC || defined _POWER) && defined _AIX && (LDBL_MANT_DIG == 106) && defined __GNUC__
# undef LDBL_MIN_EXP
# define LDBL_MIN_EXP DBL_MIN_EXP
#endif
extern
#ifdef __cplusplus
"C"
#endif
long double remainderl (long double, long double);
static long double dummy (long double x, long double y) { return 0; }
volatile long double gx;
volatile long double gy;
long double gz;
int main (int argc, char *argv[])
{
long double (* volatile my_remainderl) (long double, long double) =
argc ? remainderl : dummy;
int result = 0;
/* This test fails on OpenBSD 5.1/SPARC. */
{
gx = 9.245907126L;
gy = 3.141592654L;
gz = remainderl (gx, gy);
if (gz >= 0.0L)
result |= 1;
}
/* This test fails on musl 1.2.2/arm64, musl 1.2.2/s390x, NetBSD 10.0. */
{
const long double TWO_LDBL_MANT_DIG = /* 2^LDBL_MANT_DIG */
(long double) (1U << ((LDBL_MANT_DIG - 1) / 5))
* (long double) (1U << ((LDBL_MANT_DIG - 1 + 1) / 5))
* (long double) (1U << ((LDBL_MANT_DIG - 1 + 2) / 5))
* (long double) (1U << ((LDBL_MANT_DIG - 1 + 3) / 5))
* (long double) (1U << ((LDBL_MANT_DIG - 1 + 4) / 5));
long double x = 11.357996098166760874793827872740874983168L;
long double y = 0.486497838502717923110029188864352615388L;
long double z = my_remainderl (x, y) - (x - 23 * y);
long double err = z * TWO_LDBL_MANT_DIG;
if (!(err >= -32.0L && err <= 32.0L))
result |= 2;
}
return result;
}
]])],
[gl_cv_func_remainderl_works=yes],
[gl_cv_func_remainderl_works=no],
[case "$host_os" in
# Guess yes on glibc systems.
*-gnu* | gnu*) gl_cv_func_remainderl_works="guessing yes" ;;
# Guess no on musl systems.
*-musl* | midipix*) gl_cv_func_remainderl_works="guessing no" ;;
# Guess no on NetBSD and OpenBSD.
netbsd* | openbsd*) gl_cv_func_remainderl_works="guessing no" ;;
# Guess yes on native Windows.
mingw* | windows*) gl_cv_func_remainderl_works="guessing yes" ;;
# If we don't know, obey --enable-cross-guesses.
*) gl_cv_func_remainderl_works="$gl_cross_guess_normal" ;;
esac
])
])
])