hypot.m4

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Hash : b1fcec6d
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Date : 2025-09-10T23:22:53

Remove support for IRIX.

* all-modules: Update comments.
* build-aux/install-reloc: Likewise.
* build-aux/reloc-ldflags: Likewise.
* gnulib-tool: Likewise.
* gnulib-tool.py: Likewise.
* gnulib-tool.sh: Likewise.
* lib/aligned-malloc.h: Likewise.
* lib/boot-time.c: Likewise.
* lib/c32is-impl.h: Likewise.
* lib/c32srtombs-state.c: Likewise.
* lib/c32to-impl.h: Likewise.
* lib/c32width.c: Likewise.
* lib/errno.in.h: Likewise.
* lib/euidaccess.c: Likewise.
* lib/fbufmode.c: Likewise.
* lib/fenv-except-state-get.c: Likewise.
* lib/fenv-except-state-set.c: Likewise.
* lib/fenv-except-tracking-clear.c: Likewise.
* lib/fenv-except-tracking-set.c: Likewise.
* lib/fenv-except-tracking-test.c: Likewise.
* lib/fenv-except-trapping.c: Likewise.
* lib/fenv-round.c: Likewise.
* lib/fflush.c: Likewise.
* lib/fileblocks.c: Likewise.
* lib/forkpty.c: Likewise.
* lib/fpending.c: Likewise.
* lib/fpurge.c: Likewise.
* lib/freadable.c: Likewise.
* lib/freadahead.c: Likewise.
* lib/freading.c: Likewise.
* lib/freadptr.c: Likewise.
* lib/freadseek.c: Likewise.
* lib/fseeko.c: Likewise.
* lib/fseterr.c: Likewise.
* lib/fsusage.c: Likewise.
* lib/fwritable.c: Likewise.
* lib/fwriting.c: Likewise.
* lib/getdomainname.c: Likewise.
* lib/idpriv-drop.c: Likewise.
* lib/idpriv-droptemp.c: Likewise.
* lib/limits.in.h: Likewise.
* lib/mbrtoc16.c: Likewise.
* lib/mbrtoc32.c: Likewise.
* lib/mbsrtoc32s-state.c: Likewise.
* lib/mbsrtowcs-state.c: Likewise.
* lib/mbtowc-lock.h: Likewise.
* lib/minmax.h: Likewise.
* lib/netdb.in.h: Likewise.
* lib/pipe-filter-ii.c: Likewise.
* lib/posix_openpt.c: Likewise.
* lib/ptsname_r.c: Likewise.
* lib/readutmp.c: Likewise.
* lib/readutmp.h: Likewise.
* lib/resource-ext.h: Likewise.
* lib/safe-read.h: Likewise.
* lib/safe-write.h: Likewise.
* lib/save-cwd.c: Likewise.
* lib/stdbool.in.h: Likewise.
* lib/striconv.c: Likewise.
* lib/striconveh.c: Likewise.
* lib/termcap.h: Likewise.
* lib/terminfo.h: Likewise.
* lib/unistd.in.h: Likewise.
* lib/vasnprintf.c: Likewise.
* lib/wcrtomb.c: Likewise.
* lib/wcsrtombs-state.c: Likewise.
* m4/fenv-environment.m4: Likewise.
* m4/fenv-exceptions-state.m4: Likewise.
* m4/fenv-exceptions-tracking.m4: Likewise.
* m4/fenv-rounding.m4: Likewise.
* m4/fmod.m4: Likewise.
* m4/getdomainname.m4: Likewise.
* m4/getloadavg.m4: Likewise.
* m4/getopt.m4: Likewise.
* m4/hypot.m4: Likewise.
* m4/hypotf.m4: Likewise.
* m4/hypotl.m4: Likewise.
* m4/iconv.m4: Likewise.
* m4/intl-thread-locale.m4: Likewise.
* m4/largefile.m4: Likewise.
* m4/libdl.m4: Likewise.
* m4/locale-ja.m4: Likewise.
* m4/locale_h.m4: Likewise.
* m4/log.m4: Likewise.
* m4/log10.m4: Likewise.
* m4/log10f.m4: Likewise.
* m4/logf.m4: Likewise.
* m4/modf.m4: Likewise.
* m4/modff.m4: Likewise.
* m4/modfl.m4: Likewise.
* m4/pthread-rwlock.m4: Likewise.
* m4/semaphore.m4: Likewise.
* m4/socklen.m4: Likewise.
* m4/stdint.m4: Likewise.
* m4/strtod.m4: Likewise.
* m4/strtof.m4: Likewise.
* m4/strtold.m4: Likewise.
* modules/sigsegv: Likewise.
* posix-modules: Likewise.
* pygnulib/GLImport.py: Likewise.
* tests/init.sh: Likewise.
* tests/test-echo.sh: Likewise.
* tests/test-isatty.c: Likewise.
* tests/test-math-h.c: Likewise.
* tests/test-nonblocking-pipe.h: Likewise.
* tests/test-nonblocking-socket.h: Likewise.
* tests/test-strtod.h: Likewise.
* tests/test-strtof.h: Likewise.
* tests/test-strtold.h: Likewise.
* tests/test-vasnprintf.c: Likewise.
* tests/test-vasnwprintf.c: Likewise.

Download

m4/hypot.m4

# hypot.m4
# serial 14
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_HYPOT],
[
  m4_divert_text([DEFAULTS], [gl_hypot_required=plain])
  AC_REQUIRE([gl_MATH_H_DEFAULTS])

  dnl Persuade glibc <math.h> to declare hypot().
  AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS])

  dnl Determine HYPOT_LIBM.
  gl_COMMON_DOUBLE_MATHFUNC([hypot])

  m4_ifdef([gl_FUNC_HYPOT_IEEE], [
    if test $gl_hypot_required = ieee && test $REPLACE_HYPOT = 0; then
      AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
      AC_CACHE_CHECK([whether hypot works according to ISO C 99 with IEC 60559],
        [gl_cv_func_hypot_ieee],
        [
          saved_LIBS="$LIBS"
          LIBS="$LIBS $HYPOT_LIBM"
          AC_RUN_IFELSE(
            [AC_LANG_SOURCE([[
#ifndef __NO_MATH_INLINES
# define __NO_MATH_INLINES 1 /* for glibc */
#endif
#include <math.h>
/* Compare two numbers with ==.
   This is a separate function in order to disable compiler optimizations.  */
static int
numeric_equal (double x, double y)
{
  return x == y;
}
static double dummy (double x, double y) { return 0; }
double zero;
double one = 1.0;
int main (int argc, char *argv[])
{
  double (* volatile my_hypot) (double, double) = argc ? hypot : dummy;
  double f;
  /* Test hypot(NaN,Infinity).
     This test fails on native Windows.  */
  f = my_hypot (zero / zero, one / zero);
  if (!numeric_equal (f, f))
    return 1;
  return 0;
}
            ]])],
            [gl_cv_func_hypot_ieee=yes],
            [gl_cv_func_hypot_ieee=no],
            [case "$host_os" in
                                   # Guess yes on glibc systems.
               *-gnu* | gnu*)      gl_cv_func_hypot_ieee="guessing yes" ;;
                                   # Guess yes on musl systems.
               *-musl* | midipix*) gl_cv_func_hypot_ieee="guessing yes" ;;
                                   # Guess yes on native Windows.
               mingw* | windows*)  gl_cv_func_hypot_ieee="guessing yes" ;;
                                   # If we don't know, obey --enable-cross-guesses.
               *)                  gl_cv_func_hypot_ieee="$gl_cross_guess_normal" ;;
             esac
            ])
          LIBS="$saved_LIBS"
        ])
      case "$gl_cv_func_hypot_ieee" in
        *yes) ;;
        *) REPLACE_HYPOT=1 ;;
      esac
    fi
  ])
  if test $REPLACE_HYPOT = 1; then
    dnl Find libraries needed to link lib/hypot.c.
    AC_REQUIRE([gl_FUNC_FABS])
    AC_REQUIRE([gl_FUNC_FREXP])
    AC_REQUIRE([gl_FUNC_LDEXP])
    AC_REQUIRE([gl_FUNC_SQRT])
    HYPOT_LIBM=
    dnl Append $FABS_LIBM to HYPOT_LIBM, avoiding gratuitous duplicates.
    case " $HYPOT_LIBM " in
      *" $FABS_LIBM "*) ;;
      *) HYPOT_LIBM="$HYPOT_LIBM $FABS_LIBM" ;;
    esac
    dnl Append $FREXP_LIBM to HYPOT_LIBM, avoiding gratuitous duplicates.
    case " $HYPOT_LIBM " in
      *" $FREXP_LIBM "*) ;;
      *) HYPOT_LIBM="$HYPOT_LIBM $FREXP_LIBM" ;;
    esac
    dnl Append $LDEXP_LIBM to HYPOT_LIBM, avoiding gratuitous duplicates.
    case " $HYPOT_LIBM " in
      *" $LDEXP_LIBM "*) ;;
      *) HYPOT_LIBM="$HYPOT_LIBM $LDEXP_LIBM" ;;
    esac
    dnl Append $SQRT_LIBM to HYPOT_LIBM, avoiding gratuitous duplicates.
    case " $HYPOT_LIBM " in
      *" $SQRT_LIBM "*) ;;
      *) HYPOT_LIBM="$HYPOT_LIBM $SQRT_LIBM" ;;
    esac
  fi
])

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kc3-lang/gnulib/m4/hypot.m4

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m4/hypot.m4