dolphin/Source/Core/Common/FPURoundMode.h
Tillmann Karras d05e205a24 FPURoundMode: revert use of enums in bit-fields
The workaround of using fixed underlying types produces lots of warnings
in GCC because now the bit-fields are too small for the value range used
for conversion semantics.
2014-03-09 15:24:35 +01:00

46 lines
1.0 KiB
C++

// Copyright 2013 Dolphin Emulator Project
// Licensed under GPLv2
// Refer to the license.txt file included.
#pragma once
#include "Common/CommonTypes.h"
namespace FPURoundMode
{
// TODO: MSVC currently produces broken code:
// https://connect.microsoft.com/VisualStudio/feedback/details/828892/vc-2013-miscompilation-with-enums-and-bit-fields
// Once that is fixed, change types in SetRoundMode(), SetSIMDMode(), and in UReg_FPSCR to 'RoundMode'.
enum RoundMode
{
ROUND_NEAR = 0,
ROUND_CHOP = 1,
ROUND_UP = 2,
ROUND_DOWN = 3
};
enum PrecisionMode
{
PREC_24 = 0,
PREC_53 = 1,
PREC_64 = 2
};
void SetRoundMode(int mode);
void SetPrecisionMode(PrecisionMode mode);
void SetSIMDMode(int rounding_mode, bool non_ieee_mode);
/*
* There are two different flavors of float to int conversion:
* _mm_cvtps_epi32() and _mm_cvttps_epi32().
*
* The first rounds according to the MXCSR rounding bits.
* The second one always uses round towards zero.
*/
void SaveSIMDState();
void LoadSIMDState();
void LoadDefaultSIMDState();
}