view m4/sinf.m4 @ 17921:58c1b50299a6

getopt: give accurate ambiguity diagnostic on mem exhaustion * lib/getopt.c (_getopt_internal_r): The previous commit broke out the loop too early, which could give a false indication of ambiguous options under memory exhaustion.
author Pádraig Brady <P@draigBrady.com>
date Wed, 18 Feb 2015 22:37:31 +0000
parents ab58d4870664
children
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# sinf.m4 serial 2
dnl Copyright (C) 2011-2015 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_SINF],
[
  AC_REQUIRE([gl_MATH_H_DEFAULTS])
  AC_REQUIRE([gl_FUNC_SIN])

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

  dnl Test whether sinf() exists. Assume that sinf(), if it exists, is
  dnl defined in the same library as sin().
  save_LIBS="$LIBS"
  LIBS="$LIBS $SIN_LIBM"
  AC_CHECK_FUNCS([sinf])
  LIBS="$save_LIBS"
  if test $ac_cv_func_sinf = yes; then
    SINF_LIBM="$SIN_LIBM"
  else
    HAVE_SINF=0
    SINF_LIBM="$SIN_LIBM"
  fi
  AC_SUBST([SINF_LIBM])
])