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