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//===- llvm/unittest/Support/ScaledNumberTest.cpp - ScaledPair tests -----==//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#include "llvm/Support/ScaledNumber.h"
#include "llvm/Support/DataTypes.h"
#include "gtest/gtest.h"
using namespace llvm;
using namespace llvm::ScaledNumbers;
namespace {
template <class UIntT> struct ScaledPair {
UIntT D;
int S;
ScaledPair(const std::pair<UIntT, int16_t> &F) : D(F.first), S(F.second) {}
ScaledPair(UIntT D, int S) : D(D), S(S) {}
bool operator==(const ScaledPair<UIntT> &X) const {
return D == X.D && S == X.S;
}
};
template <class UIntT>
bool operator==(const std::pair<UIntT, int16_t> &L,
const ScaledPair<UIntT> &R) {
return ScaledPair<UIntT>(L) == R;
}
template <class UIntT>
void PrintTo(const ScaledPair<UIntT> &F, ::std::ostream *os) {
*os << F.D << "*2^" << F.S;
}
typedef ScaledPair<uint32_t> SP32;
typedef ScaledPair<uint64_t> SP64;
TEST(ScaledNumberHelpersTest, getRounded) {
EXPECT_EQ(getRounded<uint32_t>(0, 0, false), SP32(0, 0));
EXPECT_EQ(getRounded<uint32_t>(0, 0, true), SP32(1, 0));
EXPECT_EQ(getRounded<uint32_t>(20, 21, true), SP32(21, 21));
EXPECT_EQ(getRounded<uint32_t>(UINT32_MAX, 0, false), SP32(UINT32_MAX, 0));
EXPECT_EQ(getRounded<uint32_t>(UINT32_MAX, 0, true), SP32(1 << 31, 1));
EXPECT_EQ(getRounded<uint64_t>(0, 0, false), SP64(0, 0));
EXPECT_EQ(getRounded<uint64_t>(0, 0, true), SP64(1, 0));
EXPECT_EQ(getRounded<uint64_t>(20, 21, true), SP64(21, 21));
EXPECT_EQ(getRounded<uint64_t>(UINT32_MAX, 0, false), SP64(UINT32_MAX, 0));
EXPECT_EQ(getRounded<uint64_t>(UINT32_MAX, 0, true),
SP64(UINT64_C(1) << 32, 0));
EXPECT_EQ(getRounded<uint64_t>(UINT64_MAX, 0, false), SP64(UINT64_MAX, 0));
EXPECT_EQ(getRounded<uint64_t>(UINT64_MAX, 0, true),
SP64(UINT64_C(1) << 63, 1));
}
TEST(FloatsTest, getAdjusted) {
const uint64_t Max32In64 = UINT32_MAX;
EXPECT_EQ(getAdjusted32(0), SP32(0, 0));
EXPECT_EQ(getAdjusted32(0, 5), SP32(0, 5));
EXPECT_EQ(getAdjusted32(UINT32_MAX), SP32(UINT32_MAX, 0));
EXPECT_EQ(getAdjusted32(Max32In64 << 1), SP32(UINT32_MAX, 1));
EXPECT_EQ(getAdjusted32(Max32In64 << 1, 1), SP32(UINT32_MAX, 2));
EXPECT_EQ(getAdjusted32(Max32In64 << 31), SP32(UINT32_MAX, 31));
EXPECT_EQ(getAdjusted32(Max32In64 << 32), SP32(UINT32_MAX, 32));
EXPECT_EQ(getAdjusted32(Max32In64 + 1), SP32(1u << 31, 1));
EXPECT_EQ(getAdjusted32(UINT64_MAX), SP32(1u << 31, 33));
EXPECT_EQ(getAdjusted64(0), SP64(0, 0));
EXPECT_EQ(getAdjusted64(0, 5), SP64(0, 5));
EXPECT_EQ(getAdjusted64(UINT32_MAX), SP64(UINT32_MAX, 0));
EXPECT_EQ(getAdjusted64(Max32In64 << 1), SP64(Max32In64 << 1, 0));
EXPECT_EQ(getAdjusted64(Max32In64 << 1, 1), SP64(Max32In64 << 1, 1));
EXPECT_EQ(getAdjusted64(Max32In64 << 31), SP64(Max32In64 << 31, 0));
EXPECT_EQ(getAdjusted64(Max32In64 << 32), SP64(Max32In64 << 32, 0));
EXPECT_EQ(getAdjusted64(Max32In64 + 1), SP64(Max32In64 + 1, 0));
EXPECT_EQ(getAdjusted64(UINT64_MAX), SP64(UINT64_MAX, 0));
}
}
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