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/*
* Copyright (C) 2018-2021 Intel Corporation
*
* SPDX-License-Identifier: MIT
*
*/
#include "shared/source/utilities/numeric.h"
#include "shared/test/common/test_macros/test.h"
#include <type_traits>
using namespace NEO;
TEST(StorageTypeTest, whenGivenNumberOfBitsThenPicksIntegerTypeThatIsLargeEnough) {
static_assert(std::is_same<uint8_t, StorageTypeT<0>>::value, "");
static_assert(std::is_same<uint8_t, StorageTypeT<1>>::value, "");
static_assert(std::is_same<uint8_t, StorageTypeT<8>>::value, "");
static_assert(std::is_same<uint16_t, StorageTypeT<9>>::value, "");
static_assert(std::is_same<uint16_t, StorageTypeT<16>>::value, "");
static_assert(std::is_same<uint32_t, StorageTypeT<17>>::value, "");
static_assert(std::is_same<uint32_t, StorageTypeT<32>>::value, "");
static_assert(std::is_same<uint64_t, StorageTypeT<33>>::value, "");
static_assert(std::is_same<uint64_t, StorageTypeT<60>>::value, "");
static_assert(std::is_same<uint64_t, StorageTypeT<64>>::value, "");
}
TEST(FixedU4D8, whenGetMaxRepresentableFloatingPointValueIsCalledThenProperValueIsReturned) {
constexpr float maxU4D8 = 15.99609375f;
static_assert(maxU4D8 == FixedU4D8::getMaxRepresentableFloat(), "");
}
TEST(FixedU4D8, whenCreatingFromTooBigFloatThenValueIsClamped) {
constexpr float maxU4D8 = FixedU4D8::getMaxRepresentableFloat();
FixedU4D8 u4d8Max{maxU4D8};
FixedU4D8 u4d8MaxPlus1{maxU4D8 + 1};
EXPECT_EQ(u4d8Max.getRawAccess(), u4d8MaxPlus1.getRawAccess());
EXPECT_EQ(maxNBitValue(4 + 8), u4d8Max.getRawAccess()); // all 12 bits should be set
EXPECT_EQ(maxU4D8, u4d8Max.asFloat());
}
TEST(FixedU4D8, whenCreatingFromNegativeFloatThenValueIsClamped) {
FixedU4D8 u4d8Zero{0.0f};
FixedU4D8 u4d8Minus1{-1.0f};
EXPECT_EQ(u4d8Zero.getRawAccess(), u4d8Minus1.getRawAccess());
EXPECT_EQ(0U, u4d8Zero.getRawAccess()); // all bits should be cleaned
EXPECT_EQ(0.0f, u4d8Zero.asFloat());
}
TEST(FixedU4D8, whenCreatingFromRepresentableFloatThenCorrectValueIsPreserved) {
constexpr float someValue = 3.5f;
FixedU4D8 u4d8{someValue};
EXPECT_EQ(someValue, u4d8.asFloat());
}
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