GCC Code Coverage Report
Directory: ./ Exec Total Coverage
File: lib/libm/src/s_round.c Lines: 7 12 58.3 %
Date: 2017-11-13 Branches: 4 10 40.0 %

Line Branch Exec Source
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/*	$OpenBSD: s_round.c,v 1.7 2016/09/12 19:47:02 guenther Exp $	*/
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/*-
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 * Copyright (c) 2003, Steven G. Kargl
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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 unmodified, this list of conditions, and the following
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 *    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 ``AS IS'' AND ANY EXPRESS OR
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 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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 */
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#include <float.h>
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#include <math.h>
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#include "math_private.h"
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double
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round(double x)
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{
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	double t;
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	if (isinf(x) || isnan(x))
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		return (x);
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	if (x >= 0.0) {
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		t = floor(x);
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		if (t - x <= -0.5)
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			t += 1.0;
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		return (t);
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	} else {
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		t = floor(-x);
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		if (t + x <= -0.5)
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			t += 1.0;
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		return (-t);
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	}
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}
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DEF_STD(round);
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LDBL_MAYBE_CLONE(round);