GCC Code Coverage Report
Directory: ./ Exec Total Coverage
File: lib/libm/src/s_lroundl.c Lines: 2 2 100.0 %
Date: 2017-11-13 Branches: 0 0 0.0 %

Line Branch Exec Source
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/*	$OpenBSD: s_lroundl.c,v 1.2 2012/12/05 23:20:04 deraadt Exp $	*/
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/*-
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 * Copyright (c) 2005 David Schultz <das@FreeBSD.ORG>
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 * All rights reserved.
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 *
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 * Redistribution and use in source and binary forms, with or without
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 * modification, are permitted provided that the following conditions
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 * are met:
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 * 1. Redistributions of source code must retain the above copyright
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 *    notice, this list of conditions and the following disclaimer.
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 * 2. Redistributions in binary form must reproduce the above copyright
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 *    notice, this list of conditions and the following disclaimer in the
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 *    documentation and/or other materials provided with the distribution.
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 *
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 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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 * SUCH DAMAGE.
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 */
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#include <sys/limits.h>
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#include <fenv.h>
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#include <math.h>
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#ifndef type
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#if 0
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__FBSDID("$FreeBSD: src/lib/msun/src/s_lround.c,v 1.2 2005/04/08 00:52:16 das Exp $");
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#endif
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#define type		long double
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#define	roundit		roundl
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#define dtype		long
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#define	DTYPE_MIN	LONG_MIN
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#define	DTYPE_MAX	LONG_MAX
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#define	fn		lroundl
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#endif
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/*
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 * If type has more precision than dtype, the endpoints dtype_(min|max) are
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 * of the form xxx.5; they are "out of range" because lround() rounds away
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 * from 0.  On the other hand, if type has less precision than dtype, then
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 * all values that are out of range are integral, so we might as well assume
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 * that everything is in range.  At compile time, INRANGE(x) should reduce to
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 * two floating-point comparisons in the former case, or TRUE otherwise.
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 */
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static const type dtype_min = DTYPE_MIN - 0.5;
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static const type dtype_max = DTYPE_MAX + 0.5;
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#define	INRANGE(x)	(dtype_max - DTYPE_MAX != 0.5 || \
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			 ((x) > dtype_min && (x) < dtype_max))
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dtype
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fn(type x)
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{
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	if (INRANGE(x)) {
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		x = roundit(x);
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		return ((dtype)x);
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	} else {
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		feraiseexcept(FE_INVALID);
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		return (DTYPE_MAX);
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	}
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}