/*--------------------------------------------------------------------

 *© Portions copyright (c) 2006 Nokia Corporation.  All rights reserved.

 *--------------------------------------------------------------------

*/

/*-

 * Copyright (c) 2005 David Schultz <das@FreeBSD.ORG>

 * All rights reserved.

 *

 * Redistribution and use in source and binary forms, with or without

 * modification, are permitted provided that the following conditions

 * are met:

 * 1. Redistributions of source code must retain the above copyright

 *    notice, this list of conditions and the following disclaimer.

 * 2. Redistributions in binary form must reproduce the above copyright

 *    notice, this list of conditions and the following disclaimer in the

 *    documentation and/or other materials provided with the distribution.

 *

 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND

 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE

 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE

 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE

 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL

 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS

 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)

 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT

 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY

 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF

 * SUCH DAMAGE.

 */

#include <sys/cdefs.h>

#include <sys/limits.h>

#include <fenv.h>

#include <math.h>

#ifndef type

#ifndef __SYMBIAN32__

__FBSDID("$FreeBSD: src/lib/msun/src/s_lround.c,v 1.2 2005/04/08 00:52:16 das Exp $");

#endif //__SYMBIAN32__

#define type		double

#define	roundit		round

#define dtype		long

#define	DTYPE_MIN	LONG_MIN

#define	DTYPE_MAX	LONG_MAX

#define	fn		lround

#endif

/*

 * If type has more precision than dtype, the endpoints dtype_(min|max) are

 * of the form xxx.5; they are "out of range" because lround() rounds away

 * from 0.  On the other hand, if type has less precision than dtype, then

 * all values that are out of range are integral, so we might as well assume

 * that everything is in range.  At compile time, INRANGE(x) should reduce to

 * two floating-point comparisons in the former case, or TRUE otherwise.

 */

static const type dtype_min = DTYPE_MIN - 0.5;

static const type dtype_max = DTYPE_MAX + 0.5;

#define	INRANGE(x)	(dtype_max - DTYPE_MAX != 0.5 || \

			 ((x) > dtype_min && (x) < dtype_max))

EXPORT_C dtype

fn(type x)

{

	if (INRANGE(x)) {

		x = roundit(x);

		return ((dtype)x);

	} else {

		feraiseexcept(FE_INVALID);

		return (DTYPE_MAX);

	}

}