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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# roundf.m4
# serial 30
dnl Copyright (C) 2007-2025 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_ROUNDF],
[
m4_divert_text([DEFAULTS], [gl_roundf_required=plain])
AC_REQUIRE([gl_MATH_H_DEFAULTS])
dnl Persuade glibc <math.h> to declare roundf().
AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS])
gl_CHECK_MATH_LIB([ROUNDF_LIBM], [float], [x = roundf (x);],
[extern
#ifdef __cplusplus
"C"
#endif
float roundf (float);
])
if test "$ROUNDF_LIBM" != missing; then
HAVE_ROUNDF=1
dnl Test whether roundf() produces correct results. On mingw, for
dnl x = 1/2 - 2^-25, the system's roundf() returns a wrong result.
AC_REQUIRE([AC_PROG_CC])
AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
AC_CACHE_CHECK([whether roundf works], [gl_cv_func_roundf_works],
[
saved_LIBS="$LIBS"
LIBS="$LIBS $ROUNDF_LIBM"
AC_RUN_IFELSE([AC_LANG_SOURCE([[
#include <float.h>
#include <math.h>
extern
#ifdef __cplusplus
"C"
#endif
float roundf (float);
#if defined _MSC_VER && !defined __clang__
# pragma fenv_access (off)
#endif
int main()
{
/* 2^FLT_MANT_DIG. */
static const float TWO_MANT_DIG =
/* Assume FLT_MANT_DIG <= 3 * 31.
Use the identity n = floor(n/3) + floor((n+1)/3) + floor((n+2)/3). */
(float) (1U << (FLT_MANT_DIG / 3))
* (float) (1U << ((FLT_MANT_DIG + 1) / 3))
* (float) (1U << ((FLT_MANT_DIG + 2) / 3));
volatile float x = 0.5f - 0.5f / TWO_MANT_DIG;
return (x < 0.5f && roundf (x) != 0.0f);
}]])], [gl_cv_func_roundf_works=yes], [gl_cv_func_roundf_works=no],
[case "$host_os" in
# Guess yes on MSVC, no on mingw.
windows*-msvc*)
gl_cv_func_roundf_works="guessing yes"
;;
mingw* | windows*)
AC_EGREP_CPP([Known], [
#ifdef _MSC_VER
Known
#endif
],
[gl_cv_func_roundf_works="guessing yes"],
[gl_cv_func_roundf_works="guessing no"])
;;
*)
gl_cv_func_roundf_works="guessing yes"
;;
esac
])
LIBS="$saved_LIBS"
])
case "$gl_cv_func_roundf_works" in
*no) REPLACE_ROUNDF=1 ;;
esac
m4_ifdef([gl_FUNC_ROUNDF_IEEE], [
if test $gl_roundf_required = ieee && test $REPLACE_ROUNDF = 0; then
AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
AC_CACHE_CHECK([whether roundf works according to ISO C 99 with IEC 60559],
[gl_cv_func_roundf_ieee],
[
saved_LIBS="$LIBS"
LIBS="$LIBS $ROUNDF_LIBM"
AC_RUN_IFELSE(
[AC_LANG_SOURCE([[
#ifndef __NO_MATH_INLINES
# define __NO_MATH_INLINES 1 /* for glibc */
#endif
#include <math.h>
extern
#ifdef __cplusplus
"C"
#endif
float roundf (float);
]gl_FLOAT_MINUS_ZERO_CODE[
]gl_FLOAT_SIGNBIT_CODE[
static float dummy (float f) { return 0; }
int main (int argc, char *argv[])
{
float (* volatile my_roundf) (float) = argc ? roundf : dummy;
int result = 0;
/* Test whether roundf (-0.0f) is -0.0f. */
if (signbitf (minus_zerof) && !signbitf (my_roundf (minus_zerof)))
result |= 1;
/* Test whether roundf (-0.3f) is -0.0f. */
if (signbitf (-0.3f) && !signbitf (my_roundf (-0.3f)))
result |= 2;
return result;
}
]])],
[gl_cv_func_roundf_ieee=yes],
[gl_cv_func_roundf_ieee=no],
[case "$host_os" in
# Guess yes on glibc systems.
*-gnu* | gnu*) gl_cv_func_roundf_ieee="guessing yes" ;;
# Guess yes on musl systems.
*-musl* | midipix*) gl_cv_func_roundf_ieee="guessing yes" ;;
# Guess yes on MSVC, no on mingw.
windows*-msvc*) gl_cv_func_roundf_ieee="guessing yes" ;;
mingw* | windows*) AC_EGREP_CPP([Known], [
#ifdef _MSC_VER
Known
#endif
],
[gl_cv_func_roundf_ieee="guessing yes"],
[gl_cv_func_roundf_ieee="guessing no"])
;;
# If we don't know, obey --enable-cross-guesses.
*) gl_cv_func_roundf_ieee="$gl_cross_guess_normal" ;;
esac
])
LIBS="$saved_LIBS"
])
case "$gl_cv_func_roundf_ieee" in
*yes) ;;
*) REPLACE_ROUNDF=1 ;;
esac
fi
])
else
HAVE_ROUNDF=0
fi
if test $HAVE_ROUNDF = 0 || test $REPLACE_ROUNDF = 1; then
dnl Find libraries needed to link lib/roundf.c.
AC_CHECK_DECLS([ceilf, floorf], , , [[#include <math.h>]])
if test "$ac_cv_have_decl_floorf" = yes \
&& test "$ac_cv_have_decl_ceilf" = yes; then
gl_FUNC_FLOORF_LIBS
gl_FUNC_CEILF_LIBS
if test "$FLOORF_LIBM" != '?' && test "$CEILF_LIBM" != '?'; then
AC_DEFINE([HAVE_FLOORF_AND_CEILF], [1],
[Define if the both the floorf() and ceilf() functions exist.])
ROUNDF_LIBM=
dnl Append $FLOORF_LIBM to ROUNDF_LIBM, avoiding gratuitous duplicates.
case " $ROUNDF_LIBM " in
*" $FLOORF_LIBM "*) ;;
*) ROUNDF_LIBM="$ROUNDF_LIBM $FLOORF_LIBM" ;;
esac
dnl Append $CEILF_LIBM to ROUNDF_LIBM, avoiding gratuitous duplicates.
case " $ROUNDF_LIBM " in
*" $CEILF_LIBM "*) ;;
*) ROUNDF_LIBM="$ROUNDF_LIBM $CEILF_LIBM" ;;
esac
else
ROUNDF_LIBM=
fi
else
ROUNDF_LIBM=
fi
fi
AC_SUBST([ROUNDF_LIBM])
])