kc3-lang/gnulib/m4/fenv_h.m4

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• Hash : b1f65faa
  Author :
  Date : 2024-10-17T21:52:41
  

  Use a warranty disclaimer in all-permissive license notices.
  
  * etc/license-notices/unlimited: Add a short warranty disclaimer
  sentence.
  * m4/*.m4: Update.
  * build-aux/prefix-gnulib-mk: Likewise.
  * HACKING: Likewise.
  

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• m4/fenv_h.m4

• # fenv_h.m4
  # serial 2
  dnl Copyright (C) 2023-2024 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_ONCE([gl_FENV_H],
  [
    dnl Ensure to expand the default settings once only, before all statements
    dnl that occur in other macros.
    AC_REQUIRE([gl_FENV_H_DEFAULTS])
  
    gl_CHECK_NEXT_HEADERS([fenv.h])
    if test $ac_cv_header_fenv_h = yes; then
      HAVE_FENV_H=1
    else
      HAVE_FENV_H=0
    fi
    AC_SUBST([HAVE_FENV_H])
  
    dnl Check for declarations of anything we want to poison if the
    dnl corresponding gnulib module is not in use, and which is not
    dnl guaranteed by C99.
    gl_WARN_ON_USE_PREPARE([[#include <fenv.h>
      ]], [fedisableexcept feenableexcept fegetexcept fesetexcept
      fetestexceptflag])
  ])
  
  # gl_FENV_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_FENV_MODULE_INDICATOR],
  [
    dnl Ensure to expand the default settings once only.
    gl_FENV_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_FENV_H_REQUIRE_DEFAULTS],
  [
    m4_defun(GL_MODULE_INDICATOR_PREFIX[_FENV_H_MODULE_INDICATOR_DEFAULTS], [
      gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_FECLEAREXCEPT])
      gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_FEDISABLEEXCEPT])
      gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_FEENABLEEXCEPT])
      gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_FEGETENV])
      gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_FEGETEXCEPT])
      gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_FEGETEXCEPTFLAG])
      gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_FEGETROUND])
      gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_FEHOLDEXCEPT])
      gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_FERAISEEXCEPT])
      gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_FESETENV])
      gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_FESETEXCEPT])
      gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_FESETEXCEPTFLAG])
      gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_FESETROUND])
      gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_FETESTEXCEPT])
      gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_FETESTEXCEPTFLAG])
      gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_FEUPDATEENV])
    ])
    m4_require(GL_MODULE_INDICATOR_PREFIX[_FENV_H_MODULE_INDICATOR_DEFAULTS])
    AC_REQUIRE([gl_FENV_H_DEFAULTS])
  ])
  
  AC_DEFUN([gl_FENV_H_DEFAULTS],
  [
    dnl Assume proper GNU behavior unless another module says otherwise.
    HAVE_FECLEAREXCEPT=1;              AC_SUBST([HAVE_FECLEAREXCEPT])
    HAVE_FEDISABLEEXCEPT=1;            AC_SUBST([HAVE_FEDISABLEEXCEPT])
    HAVE_FEENABLEEXCEPT=1;             AC_SUBST([HAVE_FEENABLEEXCEPT])
    HAVE_FEGETENV=1;                   AC_SUBST([HAVE_FEGETENV])
    HAVE_FEGETEXCEPT=1;                AC_SUBST([HAVE_FEGETEXCEPT])
    HAVE_FEGETEXCEPTFLAG=1;            AC_SUBST([HAVE_FEGETEXCEPTFLAG])
    HAVE_FEGETROUND=1;                 AC_SUBST([HAVE_FEGETROUND])
    HAVE_FEHOLDEXCEPT=1;               AC_SUBST([HAVE_FEHOLDEXCEPT])
    HAVE_FERAISEEXCEPT=1;              AC_SUBST([HAVE_FERAISEEXCEPT])
    HAVE_FESETENV=1;                   AC_SUBST([HAVE_FESETENV])
    HAVE_FESETEXCEPT=1;                AC_SUBST([HAVE_FESETEXCEPT])
    HAVE_FESETEXCEPTFLAG=1;            AC_SUBST([HAVE_FESETEXCEPTFLAG])
    HAVE_FESETROUND=1;                 AC_SUBST([HAVE_FESETROUND])
    HAVE_FETESTEXCEPT=1;               AC_SUBST([HAVE_FETESTEXCEPT])
    HAVE_FETESTEXCEPTFLAG=1;           AC_SUBST([HAVE_FETESTEXCEPTFLAG])
    HAVE_FEUPDATEENV=1;                AC_SUBST([HAVE_FEUPDATEENV])
    REPLACE_FECLEAREXCEPT=0;           AC_SUBST([REPLACE_FECLEAREXCEPT])
    REPLACE_FEDISABLEEXCEPT=0;         AC_SUBST([REPLACE_FEDISABLEEXCEPT])
    REPLACE_FEENABLEEXCEPT=0;          AC_SUBST([REPLACE_FEENABLEEXCEPT])
    REPLACE_FEGETENV=0;                AC_SUBST([REPLACE_FEGETENV])
    REPLACE_FEGETEXCEPT=0;             AC_SUBST([REPLACE_FEGETEXCEPT])
    REPLACE_FEGETEXCEPTFLAG=0;         AC_SUBST([REPLACE_FEGETEXCEPTFLAG])
    REPLACE_FEGETROUND=0;              AC_SUBST([REPLACE_FEGETROUND])
    REPLACE_FEHOLDEXCEPT=0;            AC_SUBST([REPLACE_FEHOLDEXCEPT])
    REPLACE_FERAISEEXCEPT=0;           AC_SUBST([REPLACE_FERAISEEXCEPT])
    REPLACE_FESETENV=0;                AC_SUBST([REPLACE_FESETENV])
    REPLACE_FESETEXCEPT=0;             AC_SUBST([REPLACE_FESETEXCEPT])
    REPLACE_FESETEXCEPTFLAG=0;         AC_SUBST([REPLACE_FESETEXCEPTFLAG])
    REPLACE_FESETROUND=0;              AC_SUBST([REPLACE_FESETROUND])
    REPLACE_FETESTEXCEPT=0;            AC_SUBST([REPLACE_FETESTEXCEPT])
    REPLACE_FEUPDATEENV=0;             AC_SUBST([REPLACE_FEUPDATEENV])
  ])
  

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