kc3-lang/gnulib/m4/coshf.m4

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• Hash : 32a72f45
  Author :
  Date : 2023-01-01T01:14:21
  

  maint: run 'make update-copyright'
  

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• m4/coshf.m4

• # coshf.m4 serial 3
  dnl Copyright (C) 2011-2023 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_FUNC_COSHF],
  [
    AC_REQUIRE([gl_MATH_H_DEFAULTS])
    AC_REQUIRE([gl_FUNC_COSH])
  
    dnl Persuade glibc <math.h> to declare coshf().
    AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS])
  
    dnl Test whether coshf() exists. Assume that coshf(), if it exists, is
    dnl defined in the same library as cosh().
    save_LIBS="$LIBS"
    LIBS="$LIBS $COSH_LIBM"
    AC_CHECK_FUNCS([coshf])
    LIBS="$save_LIBS"
    if test $ac_cv_func_coshf = yes; then
      COSHF_LIBM="$COSH_LIBM"
    else
      HAVE_COSHF=0
      dnl If the function is declared but does not appear to exist, it may be
      dnl defined as an inline function. In order to avoid a conflict, we have
      dnl to define rpl_coshf, not coshf.
      AC_CHECK_DECLS([coshf], [REPLACE_COSHF=1], , [[#include <math.h>]])
      COSHF_LIBM="$COSH_LIBM"
    fi
    AC_SUBST([COSHF_LIBM])
  ])
  

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