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fp/op: Implement FPToFixed

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MerryMage 2018-06-29 19:34:46 +01:00
parent 8087e8df05
commit 9571269552
5 changed files with 163 additions and 0 deletions
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tests/fp/FPToFixed.cpp Normal file
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/* This file is part of the dynarmic project.
* Copyright (c) 2018 MerryMage
* This software may be used and distributed according to the terms of the GNU
* General Public License version 2 or any later version.
*/
#include <tuple>
#include <vector>
#include <catch.hpp>
#include "common/fp/fpsr.h"
#include "common/fp/op.h"
#include "rand_int.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);
}
}