printf-frexp.m4		printf-frexp.m4
	# printf-frexp.m4 serial 3		# printf-frexp.m4 serial 5
	dnl Copyright (C) 2007, 2009, 2010 Free Software Foundation, Inc.		dnl Copyright (C) 2007, 2009-2014 Free Software Foundation, Inc.
	dnl This file is free software; the Free Software Foundation		dnl This file is free software; the Free Software Foundation
	dnl gives unlimited permission to copy and/or distribute it,		dnl gives unlimited permission to copy and/or distribute it,
	dnl with or without modifications, as long as this notice is preserved.		dnl with or without modifications, as long as this notice is preserved.
	dnl Check how to define printf_frexp() without linking with libm.		dnl Check how to define printf_frexp() without linking with libm.
	AC_DEFUN([gl_FUNC_PRINTF_FREXP],		AC_DEFUN([gl_FUNC_PRINTF_FREXP],
	[		[
	AC_CACHE_CHECK([whether frexp can be used without linking with libm],		AC_REQUIRE([gl_CHECK_FREXP_NO_LIBM])
	[gl_cv_func_frexp_no_libm],
	[
	AC_TRY_LINK([#include <math.h>
	double x;
	int y;],
	[return frexp (x, &y) < 1;],
	[gl_cv_func_frexp_no_libm=yes],
	[gl_cv_func_frexp_no_libm=no])
	])
	if test $gl_cv_func_frexp_no_libm = yes; then		if test $gl_cv_func_frexp_no_libm = yes; then
	gl_FUNC_FREXP_WORKS		gl_FUNC_FREXP_WORKS
	case "$gl_cv_func_frexp_works" in		case "$gl_cv_func_frexp_works" in
	*yes)		*yes)
	AC_DEFINE([HAVE_FREXP_IN_LIBC], [1],		AC_DEFINE([HAVE_FREXP_IN_LIBC], [1],
	[Define if the frexp function is available in libc.])		[Define if the frexp function is available in libc.])
	;;		;;
	esac		esac
	fi		fi
	AC_CACHE_CHECK([whether ldexp can be used without linking with libm],		AC_CACHE_CHECK([whether ldexp can be used without linking with libm],
	[gl_cv_func_ldexp_no_libm],		[gl_cv_func_ldexp_no_libm],
	[		[
	AC_TRY_LINK([#include <math.h>		AC_LINK_IFELSE(
	double x;		[AC_LANG_PROGRAM(
	int y;],		[[#include <math.h>
	[return ldexp (x, y) < 1;],		double x;
			int y;]],
			[[return ldexp (x, y) < 1;]])],
	[gl_cv_func_ldexp_no_libm=yes],		[gl_cv_func_ldexp_no_libm=yes],
	[gl_cv_func_ldexp_no_libm=no])		[gl_cv_func_ldexp_no_libm=no])
	])		])
	if test $gl_cv_func_ldexp_no_libm = yes; then		if test $gl_cv_func_ldexp_no_libm = yes; then
	AC_DEFINE([HAVE_LDEXP_IN_LIBC], [1],		AC_DEFINE([HAVE_LDEXP_IN_LIBC], [1],
	[Define if the ldexp function is available in libc.])		[Define if the ldexp function is available in libc.])
	fi		fi
	])		])
End of changes. 3 change blocks.
	16 lines changed or deleted		9 lines changed or added
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