+++ /dev/null
-/***************************************************************************
- * Copyright (C) 2010 PCSX4ALL Team *
- * Copyright (C) 2010 Unai *
- * *
- * 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; either version 2 of the License, or *
- * (at your option) any later version. *
- * *
- * 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 for more details. *
- * *
- * You should have received a copy of the GNU General Public License *
- * along with this program; if not, write to the *
- * Free Software Foundation, Inc., *
- * 51 Franklin Street, Fifth Floor, Boston, MA 02111-1307 USA. *
- ***************************************************************************/
-
-#ifndef FIXED_H
-#define FIXED_H
-
-typedef s32 fixed;
-
-#ifdef GPU_TABLE_10_BITS
-#define TABLE_BITS 10
-#else
-#define TABLE_BITS 16
-#endif
-
-#define FIXED_BITS 16
-
-#define fixed_ZERO ((fixed)0)
-#define fixed_ONE ((fixed)1<<FIXED_BITS)
-#define fixed_TWO ((fixed)2<<FIXED_BITS)
-#define fixed_HALF ((fixed)((1<<FIXED_BITS)>>1))
-
-// big precision inverse table.
-s32 s_invTable[(1<<TABLE_BITS)];
-
-INLINE fixed i2x(const int _x) { return ((_x)<<FIXED_BITS); }
-INLINE fixed x2i(const fixed _x) { return ((_x)>>FIXED_BITS); }
-
-/*
-INLINE u32 Log2(u32 _a)
-{
- u32 c = 0; // result of log2(v) will go here
- if (_a & 0xFFFF0000) { _a >>= 16; c |= 16; }
- if (_a & 0xFF00) { _a >>= 8; c |= 8; }
- if (_a & 0xF0) { _a >>= 4; c |= 4; }
- if (_a & 0xC) { _a >>= 2; c |= 2; }
- if (_a & 0x2) { _a >>= 1; c |= 1; }
- return c;
-}
-*/
-
-#ifdef __arm__
-INLINE u32 Log2(u32 x) { u32 res; asm("clz %0,%1" : "=r" (res) : "r" (x)); return 32-res; }
-#else
-INLINE u32 Log2(u32 x) { u32 i = 0; for ( ; x > 0; ++i, x >>= 1); return i - 1; }
-#endif
-
-#ifdef GPU_TABLE_10_BITS
-INLINE void xInv (const fixed _b, s32& iFactor_, s32& iShift_)
-{
- u32 uD = (_b<0) ? -_b : _b ;
- u32 uLog = Log2(uD);
- uLog = uLog>(TABLE_BITS-1) ? uLog-(TABLE_BITS-1) : 0;
- u32 uDen = uD>>uLog;
- iFactor_ = s_invTable[uDen];
- iFactor_ = (_b<0) ? -iFactor_ :iFactor_;
- iShift_ = 15+uLog;
-}
-#else
-INLINE void xInv (const fixed _b, s32& iFactor_, s32& iShift_)
-{
- u32 uD = (_b<0) ? -_b : _b;
- if(uD>1)
- {
- u32 uLog = Log2(uD);
- uLog = uLog>(TABLE_BITS-1) ? uLog-(TABLE_BITS-1) : 0;
- u32 uDen = (uD>>uLog)-1;
- iFactor_ = s_invTable[uDen];
- iFactor_ = (_b<0) ? -iFactor_ :iFactor_;
- iShift_ = 15+uLog;
- }
- else
- {
- iFactor_=_b;
- iShift_ = 0;
- }
-}
-#endif
-
-INLINE fixed xInvMulx (const fixed _a, const s32 _iFact, const s32 _iShift)
-{
- #ifdef __arm__
- s64 res;
- asm ("smull %Q0, %R0, %1, %2" : "=&r" (res) : "r"(_a) , "r"(_iFact));
- return fixed(res>>_iShift);
- #else
- return fixed( ((s64)(_a)*(s64)(_iFact))>>(_iShift) );
- #endif
-}
-
-INLINE fixed xLoDivx (const fixed _a, const fixed _b)
-{
- s32 iFact, iShift;
- xInv(_b, iFact, iShift);
- return xInvMulx(_a, iFact, iShift);
-}
-
-///////////////////////////////////////////////////////////////////////////
-template<typename T>
-INLINE T Min2 (const T _a, const T _b) { return (_a<_b)?_a:_b; }
-
-template<typename T>
-INLINE T Min3 (const T _a, const T _b, const T _c) { return Min2(Min2(_a,_b),_c); }
-
-///////////////////////////////////////////////////////////////////////////
-template<typename T>
-INLINE T Max2 (const T _a, const T _b) { return (_a>_b)?_a:_b; }
-
-template<typename T>
-INLINE T Max3 (const T _a, const T _b, const T _c) { return Max2(Max2(_a,_b),_c); }
-
-///////////////////////////////////////////////////////////////////////////
-#endif //FIXED_H