ppsspp/Common/FPURoundMode.h
2012-11-01 16:19:01 +01:00

52 lines
1.3 KiB
C++

// Copyright (C) 2003 Dolphin Project.
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, version 2.0.
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License 2.0 for more details.
// A copy of the GPL 2.0 should have been included with the program.
// If not, see http://www.gnu.org/licenses/
// Official SVN repository and contact information can be found at
// http://code.google.com/p/dolphin-emu/
#ifndef FPU_ROUND_MODE_H_
#define FPU_ROUND_MODE_H_
#include "Common.h"
namespace FPURoundMode
{
enum RoundModes
{
ROUND_NEAR = 0,
ROUND_CHOP,
ROUND_UP,
ROUND_DOWN
};
enum PrecisionModes {
PREC_24 = 0,
PREC_53,
PREC_64
};
void SetRoundMode(u32 mode);
void SetPrecisionMode(u32 mode);
void SetSIMDMode(u32 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();
}
#endif