forked from eden-emu/eden
lizzie
111f2c3be5
Co-authored-by: crueter <crueter@crueter.xyz> Reviewed-on: eden-emu/eden#89 Co-authored-by: lizzie <lizzie@eden-emu.dev> Co-committed-by: lizzie <lizzie@eden-emu.dev>
60 lines
2.2 KiB
C++
60 lines
2.2 KiB
C++
// SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
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// SPDX-License-Identifier: GPL-3.0-or-later
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/* This file is part of the dynarmic project.
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* Copyright (c) 2018 MerryMage
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* SPDX-License-Identifier: 0BSD
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*/
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#include <tuple>
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#include <vector>
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#include <catch2/catch_test_macros.hpp>
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#include "dynarmic/common/common_types.h"
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#include "../rand_int.h"
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#include "dynarmic/common/fp/fpcr.h"
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#include "dynarmic/common/fp/fpsr.h"
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#include "dynarmic/common/fp/op.h"
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#include "dynarmic/common/fp/rounding_mode.h"
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using namespace Dynarmic;
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using namespace Dynarmic::FP;
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TEST_CASE("FPToFixed", "[fp]") {
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const std::vector<std::tuple<u32, size_t, u64, u32>> test_cases{
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{0x447A0000, 64, 0x000003E8, 0x00},
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{0xC47A0000, 32, 0xFFFFFC18, 0x00},
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{0x4479E000, 64, 0x000003E8, 0x10},
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{0x50800000, 32, 0x7FFFFFFF, 0x01},
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{0xD0800000, 32, 0x80000000, 0x01},
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{0xCF000000, 32, 0x80000000, 0x00},
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{0x80002B94, 64, 0x00000000, 0x10},
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{0x80636D24, 64, 0x00000000, 0x10},
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};
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const FPCR fpcr;
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for (auto [input, ibits, expected_output, expected_fpsr] : test_cases) {
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FPSR fpsr;
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const u64 output = FPToFixed<u32>(ibits, input, 0, false, fpcr, RoundingMode::ToNearest_TieEven, fpsr);
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REQUIRE(output == expected_output);
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REQUIRE(fpsr.Value() == expected_fpsr);
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}
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}
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TEST_CASE("FPToFixed edge cases", "[fp]") {
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const std::vector<std::tuple<u64, u64, bool, FP::RoundingMode>> test_cases{
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{0x41dffffffffffffe, 0x7fffffff, false, FP::RoundingMode::ToNearest_TieEven},
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{0x41dffffffffffffe, 0x7fffffff, false, FP::RoundingMode::TowardsPlusInfinity},
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{0x41dffffffffffffe, 0x7fffffff, false, FP::RoundingMode::TowardsMinusInfinity},
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{0x41dffffffffffffe, 0x7fffffff, false, FP::RoundingMode::TowardsZero},
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{0x41dffffffffffffe, 0x7fffffff, false, FP::RoundingMode::ToNearest_TieAwayFromZero},
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};
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const FPCR fpcr;
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FPSR fpsr;
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for (auto [input, expected_output, unsigned_, rounding_mode] : test_cases) {
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const u64 output = FPToFixed<u64>(32, input, 0, unsigned_, fpcr, rounding_mode, fpsr);
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REQUIRE(output == expected_output);
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}
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}
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