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fp/info: Incorrect point_position in FPValue

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This commit is contained in:
MerryMage 2018-08-16 10:50:28 +01:00
parent 8a3b6364c2
commit e60d6c0d20
3 changed files with 17 additions and 1 deletions
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2
src/common/fp/info.h
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@ -68,7 +68,7 @@ constexpr FPT FPValue() {
return FPInfo<FPT>::Zero(sign);
}
constexpr int point_position = static_cast<int>(FPInfo<FPT>::mantissa_width);
constexpr int point_position = static_cast<int>(FPInfo<FPT>::explicit_mantissa_width);
constexpr int highest_bit = Common::HighestSetBit(value);
constexpr int offset = point_position - highest_bit;
constexpr int normalized_exponent = exponent - offset + point_position;

1
tests/CMakeLists.txt
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@ -29,6 +29,7 @@ add_executable(dynarmic_tests
A64/testenv.h
cpu_info.cpp
fp/FPToFixed.cpp
fp/FPValue.cpp
fp/mantissa_util_tests.cpp
fp/unpacked_tests.cpp
main.cpp

15
tests/fp/FPValue.cpp Normal file
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@ -0,0 +1,15 @@
/* 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 "common/fp/info.h"
using namespace Dynarmic::FP;
static_assert(FPValue<u32, false, 0, 1>() == 0x3f800000);
static_assert(FPValue<u32, false, -1, 3>() == 0x3fc00000);
static_assert(FPValue<u32, false, 0, 12739812>() == 0x4b4264e4);
static_assert(FPValue<u32, false, -8, 100>() == 0x3ec80000);
static_assert(FPValue<u32, true, 0, 1>() == 0xbf800000);