This source file includes following definitions.
- TEST
- TEST
- TEST
- TEST
- TEST
- TEST
- TEST
- TEST
- TEST
#include "config.h"
#include "wtf/MathExtras.h"
#include <gtest/gtest.h>
namespace {
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) {
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);
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);
}
}
TEST(WTF, clampToIntLong)
{
if (sizeof(long) == sizeof(int))
return;
long maxInt = std::numeric_limits<int>::max();
long minInt = std::numeric_limits<int>::min();
long overflowInt = maxInt + 1;
long underflowInt = minInt - 1;
EXPECT_GT(overflowInt, maxInt);
EXPECT_LT(underflowInt, minInt);
EXPECT_EQ(clampTo<int>(maxInt), maxInt);
EXPECT_EQ(clampTo<int>(minInt), minInt);
EXPECT_EQ(clampTo<int>(overflowInt), maxInt);
EXPECT_EQ(clampTo<int>(underflowInt), minInt);
}
TEST(WTF, clampToIntLongLong)
{
long long maxInt = std::numeric_limits<int>::max();
long long minInt = std::numeric_limits<int>::min();
long long overflowInt = maxInt + 1;
long long underflowInt = minInt - 1;
EXPECT_GT(overflowInt, maxInt);
EXPECT_LT(underflowInt, minInt);
EXPECT_EQ(clampTo<int>(maxInt), maxInt);
EXPECT_EQ(clampTo<int>(minInt), minInt);
EXPECT_EQ(clampTo<int>(overflowInt), maxInt);
EXPECT_EQ(clampTo<int>(underflowInt), minInt);
}
TEST(WTF, clampToIntegerFloat)
{
float maxInt = std::numeric_limits<int>::max();
float minInt = std::numeric_limits<int>::min();
float overflowInt = maxInt * 1.1;
float underflowInt = minInt * 1.1;
EXPECT_GT(overflowInt, maxInt);
EXPECT_LT(underflowInt, minInt);
EXPECT_NEAR(clampToInteger(maxInt), maxInt, 1);
EXPECT_EQ(clampToInteger(minInt), minInt);
EXPECT_NEAR(clampToInteger(overflowInt), maxInt, 1);
EXPECT_EQ(clampToInteger(underflowInt), minInt);
}
TEST(WTF, clampToIntegerDouble)
{
double maxInt = std::numeric_limits<int>::max();
double minInt = std::numeric_limits<int>::min();
double overflowInt = maxInt + 1;
double underflowInt = minInt - 1;
EXPECT_GT(overflowInt, maxInt);
EXPECT_LT(underflowInt, minInt);
EXPECT_EQ(clampToInteger(maxInt), maxInt);
EXPECT_EQ(clampToInteger(minInt), minInt);
EXPECT_EQ(clampToInteger(overflowInt), maxInt);
EXPECT_EQ(clampToInteger(underflowInt), minInt);
}
TEST(WTF, clampToFloat)
{
double maxFloat = std::numeric_limits<float>::max();
double minFloat = -maxFloat;
double overflowFloat = maxFloat * 1.1;
double underflowFloat = minFloat * 1.1;
EXPECT_GT(overflowFloat, maxFloat);
EXPECT_LT(underflowFloat, minFloat);
EXPECT_EQ(clampToFloat(maxFloat), maxFloat);
EXPECT_EQ(clampToFloat(minFloat), minFloat);
EXPECT_EQ(clampToFloat(overflowFloat), maxFloat);
EXPECT_EQ(clampToFloat(underflowFloat), minFloat);
EXPECT_EQ(clampToFloat(std::numeric_limits<float>::infinity()), maxFloat);
EXPECT_EQ(clampToFloat(-std::numeric_limits<float>::infinity()), minFloat);
}
TEST(WTF, clampToUnsignedLong)
{
if (sizeof(unsigned long) == sizeof(unsigned))
return;
unsigned long maxUnsigned = std::numeric_limits<unsigned>::max();
unsigned long overflowUnsigned = maxUnsigned + 1;
EXPECT_GT(overflowUnsigned, maxUnsigned);
EXPECT_EQ(clampTo<unsigned>(maxUnsigned), maxUnsigned);
EXPECT_EQ(clampTo<unsigned>(overflowUnsigned), maxUnsigned);
EXPECT_EQ(clampTo<unsigned>(-1), 0u);
}
TEST(WTF, clampToUnsignedLongLong)
{
unsigned long long maxUnsigned = std::numeric_limits<unsigned>::max();
unsigned long long overflowUnsigned = maxUnsigned + 1;
EXPECT_GT(overflowUnsigned, maxUnsigned);
EXPECT_EQ(clampTo<unsigned>(maxUnsigned), maxUnsigned);
EXPECT_EQ(clampTo<unsigned>(overflowUnsigned), maxUnsigned);
EXPECT_EQ(clampTo<unsigned>(-1), 0u);
}
TEST(WTF, infinityMath)
{
double posInf = std::numeric_limits<double>::infinity();
double negInf = -std::numeric_limits<double>::infinity();
double nan = std::numeric_limits<double>::quiet_NaN();
EXPECT_EQ(atan2(posInf, posInf), M_PI_4);
EXPECT_EQ(atan2(posInf, negInf), 3.0 * M_PI_4);
EXPECT_EQ(atan2(negInf, posInf), -M_PI_4);
EXPECT_EQ(atan2(negInf, negInf), -3.0 * M_PI_4);
EXPECT_EQ(fmod(0.0, posInf), 0.0);
EXPECT_EQ(fmod(7.0, posInf), 7.0);
EXPECT_EQ(fmod(-7.0, posInf), -7.0);
EXPECT_EQ(fmod(0.0, negInf), 0.0);
EXPECT_EQ(fmod(7.0, negInf), 7.0);
EXPECT_EQ(fmod(-7.0, negInf), -7.0);
EXPECT_EQ(pow(5.0, 0.0), 1.0);
EXPECT_EQ(pow(-5.0, 0.0), 1.0);
EXPECT_EQ(pow(nan, 0.0), 1.0);
}
}