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Signed-off-by: swurl <swurl@swurl.xyz>
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swurl 2025-05-31 02:33:02 -04:00
parent c0cceff365
commit 6c655321e6
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4081 changed files with 1185566 additions and 45 deletions
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57
externals/dynarmic/tests/fp/FPToFixed.cpp vendored Normal file
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/* This file is part of the dynarmic project.
* Copyright (c) 2018 MerryMage
* SPDX-License-Identifier: 0BSD
*/
#include <tuple>
#include <vector>
#include <catch2/catch_test_macros.hpp>
#include <mcl/stdint.hpp>
#include "../rand_int.h"
#include "dynarmic/common/fp/fpcr.h"
#include "dynarmic/common/fp/fpsr.h"
#include "dynarmic/common/fp/op.h"
#include "dynarmic/common/fp/rounding_mode.h"
using namespace Dynarmic;
using namespace Dynarmic::FP;
TEST_CASE("FPToFixed", "[fp]") {
const std::vector<std::tuple<u32, size_t, u64, u32>> test_cases{
{0x447A0000, 64, 0x000003E8, 0x00},
{0xC47A0000, 32, 0xFFFFFC18, 0x00},
{0x4479E000, 64, 0x000003E8, 0x10},
{0x50800000, 32, 0x7FFFFFFF, 0x01},
{0xD0800000, 32, 0x80000000, 0x01},
{0xCF000000, 32, 0x80000000, 0x00},
{0x80002B94, 64, 0x00000000, 0x10},
{0x80636D24, 64, 0x00000000, 0x10},
};
const FPCR fpcr;
for (auto [input, ibits, expected_output, expected_fpsr] : test_cases) {
FPSR fpsr;
const u64 output = FPToFixed<u32>(ibits, input, 0, false, fpcr, RoundingMode::ToNearest_TieEven, fpsr);
REQUIRE(output == expected_output);
REQUIRE(fpsr.Value() == expected_fpsr);
}
}
TEST_CASE("FPToFixed edge cases", "[fp]") {
const std::vector<std::tuple<u64, u64, bool, FP::RoundingMode>> test_cases{
{0x41dffffffffffffe, 0x7fffffff, false, FP::RoundingMode::ToNearest_TieEven},
{0x41dffffffffffffe, 0x7fffffff, false, FP::RoundingMode::TowardsPlusInfinity},
{0x41dffffffffffffe, 0x7fffffff, false, FP::RoundingMode::TowardsMinusInfinity},
{0x41dffffffffffffe, 0x7fffffff, false, FP::RoundingMode::TowardsZero},
{0x41dffffffffffffe, 0x7fffffff, false, FP::RoundingMode::ToNearest_TieAwayFromZero},
};
const FPCR fpcr;
FPSR fpsr;
for (auto [input, expected_output, unsigned_, rounding_mode] : test_cases) {
const u64 output = FPToFixed<u64>(32, input, 0, unsigned_, fpcr, rounding_mode, fpsr);
REQUIRE(output == expected_output);
}
}