5a9bb045d7
The Uniform Read and Address Register Offset ran into precision differences between f32 and f24, which can be easily fixed and are not the point of the tests. As for the LG2 and EX2 tests that were failing, they were wrong. While it is true that 2^79.7 ~= 1e24, the value is bigger than the biggest representable value in f24, therefore both EX2 and LG2(?) should result in Inf.
30 lines
986 B
C++
30 lines
986 B
C++
// Copyright 2024 Citra Emulator Project
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// Licensed under GPLv2 or any later version
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// Refer to the license.txt file included.
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#include <cmath>
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#include <catch2/catch_approx.hpp>
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#include <catch2/catch_test_macros.hpp>
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#include "video_core/pica_types.h"
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using Pica::f24;
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TEST_CASE("Infinities", "[video_core][pica_float]") {
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REQUIRE(std::isinf(f24::FromFloat32(INFINITY).ToFloat32()));
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REQUIRE(std::isinf(f24::FromFloat32(1.e20f).ToFloat32()));
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REQUIRE(std::isinf(f24::FromFloat32(-1.e20f).ToFloat32()));
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}
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TEST_CASE("Subnormals", "[video_core][pica_float]") {
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REQUIRE(f24::FromFloat32(1e-20f).ToFloat32() == 0.f);
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}
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TEST_CASE("NaN", "[video_core][pica_float]") {
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const auto inf = f24::FromFloat32(INFINITY);
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const auto nan = f24::FromFloat32(NAN);
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REQUIRE(std::isnan(nan.ToFloat32()));
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REQUIRE(std::isnan((nan * f24::Zero()).ToFloat32()));
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REQUIRE(std::isnan((inf - inf).ToFloat32()));
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REQUIRE((inf * f24::Zero()).ToFloat32() == 0.f);
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}
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