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/*
* Copyright (C) 2012 Intel Corporation
*
* 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 APPLE INC. AND ITS 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 APPLE INC. OR ITS 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 "config.h"
#include <wtf/MathExtras.h>
namespace TestWebKitAPI {
TEST(WTF, Lrint)
{
EXPECT_EQ(lrint(-7.5), -8);
EXPECT_EQ(lrint(-8.5), -8);
EXPECT_EQ(lrint(-0.5), 0);
EXPECT_EQ(lrint(0.5), 0);
EXPECT_EQ(lrint(-0.5), 0);
EXPECT_EQ(lrint(1.3), 1);
EXPECT_EQ(lrint(1.7), 2);
EXPECT_EQ(lrint(0), 0);
EXPECT_EQ(lrint(-0), 0);
if (sizeof(long int) == 8) {
// Largest double number with 0.5 precision and one halfway rounding case below.
EXPECT_EQ(lrint(pow(2.0, 52) - 0.5), pow(2.0, 52));
EXPECT_EQ(lrint(pow(2.0, 52) - 1.5), pow(2.0, 52) - 2);
// Smallest double number with 0.5 precision and one halfway rounding case above.
EXPECT_EQ(lrint(-pow(2.0, 52) + 0.5), -pow(2.0, 52));
EXPECT_EQ(lrint(-pow(2.0, 52) + 1.5), -pow(2.0, 52) + 2);
}
}
} // namespace TestWebKitAPI
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