mirror of
https://github.com/ZDoom/gzdoom.git
synced 2024-11-16 09:21:43 +00:00
237 lines
5.8 KiB
C
237 lines
5.8 KiB
C
// "Build Engine & Tools" Copyright (c) 1993-1997 Ken Silverman
|
|
// Ken Silverman's official web site: "http://www.advsys.net/ken"
|
|
// See the included license file "BUILDLIC.TXT" for license info.
|
|
//
|
|
// This file is based on pragmas.h from Ken Silverman's original Build
|
|
// source code release but is meant for use with any compiler and does not
|
|
// rely on any inline assembly.
|
|
//
|
|
// Some of the inline assembly has been turned into C code, because VC++
|
|
// is smart enough to produce code at least as good as Ken's inlines.
|
|
// The more used functions are still inline assembly, because they do
|
|
// things that can't really be done in C. (I consider this a bad thing,
|
|
// because VC++ has considerably poorer support for inline assembly than
|
|
// Watcom, so it's better to rely on its C optimizer to produce fast code.)
|
|
//
|
|
|
|
#include <string.h>
|
|
#include <stddef.h>
|
|
|
|
#define toint(f) ((int)(f))
|
|
#define quickertoint(f) ((int)(f))
|
|
|
|
inline SDWORD Scale (SDWORD a, SDWORD b, SDWORD c)
|
|
{
|
|
return (fixed_t)(((__int64) a * (__int64) b) / c);
|
|
}
|
|
|
|
inline SDWORD MulScale (SDWORD a, SDWORD b, SDWORD c)
|
|
{
|
|
return (fixed_t)(((__int64) a * (__int64) b) >> c);
|
|
}
|
|
|
|
#define MAKECONSTMulScale(s) \
|
|
inline SDWORD MulScale##s (SDWORD a, SDWORD b) \
|
|
{ \
|
|
return (fixed_t)(((__int64) a * (__int64) b) >> s); \
|
|
}
|
|
MAKECONSTMulScale(1)
|
|
MAKECONSTMulScale(2)
|
|
MAKECONSTMulScale(3)
|
|
MAKECONSTMulScale(4)
|
|
MAKECONSTMulScale(5)
|
|
MAKECONSTMulScale(6)
|
|
MAKECONSTMulScale(7)
|
|
MAKECONSTMulScale(8)
|
|
MAKECONSTMulScale(9)
|
|
MAKECONSTMulScale(10)
|
|
MAKECONSTMulScale(11)
|
|
MAKECONSTMulScale(12)
|
|
MAKECONSTMulScale(13)
|
|
MAKECONSTMulScale(14)
|
|
MAKECONSTMulScale(15)
|
|
MAKECONSTMulScale(16)
|
|
MAKECONSTMulScale(17)
|
|
MAKECONSTMulScale(18)
|
|
MAKECONSTMulScale(19)
|
|
MAKECONSTMulScale(20)
|
|
MAKECONSTMulScale(21)
|
|
MAKECONSTMulScale(22)
|
|
MAKECONSTMulScale(23)
|
|
MAKECONSTMulScale(24)
|
|
MAKECONSTMulScale(25)
|
|
MAKECONSTMulScale(26)
|
|
MAKECONSTMulScale(27)
|
|
MAKECONSTMulScale(28)
|
|
MAKECONSTMulScale(29)
|
|
MAKECONSTMulScale(30)
|
|
MAKECONSTMulScale(31)
|
|
MAKECONSTMulScale(32)
|
|
#undef MAKECONSTMulScale
|
|
|
|
inline SDWORD DMulScale (SDWORD a, SDWORD b, SDWORD c, SDWORD d, SDWORD s)
|
|
{
|
|
return (fixed_t)((((__int64) a * (__int64) b) + ((__int64) c * (__int64) d)) >> s);
|
|
}
|
|
|
|
#define MAKECONSTDMulScale(s) \
|
|
inline SDWORD DMulScale##s (SDWORD a, SDWORD b, SDWORD c, SDWORD d) \
|
|
{ \
|
|
return (fixed_t)((((__int64) a * (__int64) b) + ((__int64) c * (__int64) d)) >> s); \
|
|
}
|
|
|
|
MAKECONSTDMulScale(1)
|
|
MAKECONSTDMulScale(2)
|
|
MAKECONSTDMulScale(3)
|
|
MAKECONSTDMulScale(4)
|
|
MAKECONSTDMulScale(5)
|
|
MAKECONSTDMulScale(6)
|
|
MAKECONSTDMulScale(7)
|
|
MAKECONSTDMulScale(8)
|
|
MAKECONSTDMulScale(9)
|
|
MAKECONSTDMulScale(10)
|
|
MAKECONSTDMulScale(11)
|
|
MAKECONSTDMulScale(12)
|
|
MAKECONSTDMulScale(13)
|
|
MAKECONSTDMulScale(14)
|
|
MAKECONSTDMulScale(15)
|
|
MAKECONSTDMulScale(16)
|
|
MAKECONSTDMulScale(17)
|
|
MAKECONSTDMulScale(18)
|
|
MAKECONSTDMulScale(19)
|
|
MAKECONSTDMulScale(20)
|
|
MAKECONSTDMulScale(21)
|
|
MAKECONSTDMulScale(22)
|
|
MAKECONSTDMulScale(23)
|
|
MAKECONSTDMulScale(24)
|
|
MAKECONSTDMulScale(25)
|
|
MAKECONSTDMulScale(26)
|
|
MAKECONSTDMulScale(27)
|
|
MAKECONSTDMulScale(28)
|
|
MAKECONSTDMulScale(29)
|
|
MAKECONSTDMulScale(30)
|
|
MAKECONSTDMulScale(31)
|
|
MAKECONSTDMulScale(32)
|
|
#undef MAKCONSTDMulScale
|
|
|
|
#define MAKECONSTTMulScale(s) \
|
|
inline SDWORD TMulScale##s (SDWORD a, SDWORD b, SDWORD c, SDWORD d, SDWORD e, SDWORD f) \
|
|
{ \
|
|
return (fixed_t)((((__int64) a * (__int64) b) + ((__int64) c * (__int64) d) \
|
|
+ ((__int64) e* (__int64) f)) >> s); \
|
|
}
|
|
|
|
MAKECONSTTMulScale(1)
|
|
MAKECONSTTMulScale(2)
|
|
MAKECONSTTMulScale(3)
|
|
MAKECONSTTMulScale(4)
|
|
MAKECONSTTMulScale(5)
|
|
MAKECONSTTMulScale(6)
|
|
MAKECONSTTMulScale(7)
|
|
MAKECONSTTMulScale(8)
|
|
MAKECONSTTMulScale(9)
|
|
MAKECONSTTMulScale(10)
|
|
MAKECONSTTMulScale(11)
|
|
MAKECONSTTMulScale(12)
|
|
MAKECONSTTMulScale(13)
|
|
MAKECONSTTMulScale(14)
|
|
MAKECONSTTMulScale(15)
|
|
MAKECONSTTMulScale(16)
|
|
MAKECONSTTMulScale(17)
|
|
MAKECONSTTMulScale(18)
|
|
MAKECONSTTMulScale(19)
|
|
MAKECONSTTMulScale(20)
|
|
MAKECONSTTMulScale(21)
|
|
MAKECONSTTMulScale(22)
|
|
MAKECONSTTMulScale(23)
|
|
MAKECONSTTMulScale(24)
|
|
MAKECONSTTMulScale(25)
|
|
MAKECONSTTMulScale(26)
|
|
MAKECONSTTMulScale(27)
|
|
MAKECONSTTMulScale(28)
|
|
MAKECONSTTMulScale(29)
|
|
MAKECONSTTMulScale(30)
|
|
MAKECONSTTMulScale(31)
|
|
MAKECONSTTMulScale(32)
|
|
#undef MAKECONSTTMulScale
|
|
|
|
inline SDWORD BoundMulScale (SDWORD a, SDWORD b, SDWORD c)
|
|
{
|
|
return 0xBadBeef;
|
|
}
|
|
|
|
inline SDWORD DivScale (SDWORD a, SDWORD b, SDWORD c)
|
|
{
|
|
return (fixed_t)((((__int64) a) << c) / b);
|
|
}
|
|
|
|
#define MAKECONSTDivScale(s) \
|
|
inline SDWORD DivScale##s (SDWORD a, SDWORD b) \
|
|
{ \
|
|
return (fixed_t)((((__int64) a) << s) / b); \
|
|
}
|
|
|
|
MAKECONSTDivScale(1)
|
|
MAKECONSTDivScale(2)
|
|
MAKECONSTDivScale(3)
|
|
MAKECONSTDivScale(4)
|
|
MAKECONSTDivScale(5)
|
|
MAKECONSTDivScale(6)
|
|
MAKECONSTDivScale(7)
|
|
MAKECONSTDivScale(8)
|
|
MAKECONSTDivScale(9)
|
|
MAKECONSTDivScale(10)
|
|
MAKECONSTDivScale(11)
|
|
MAKECONSTDivScale(12)
|
|
MAKECONSTDivScale(13)
|
|
MAKECONSTDivScale(14)
|
|
MAKECONSTDivScale(15)
|
|
MAKECONSTDivScale(16)
|
|
MAKECONSTDivScale(17)
|
|
MAKECONSTDivScale(18)
|
|
MAKECONSTDivScale(19)
|
|
MAKECONSTDivScale(20)
|
|
MAKECONSTDivScale(21)
|
|
MAKECONSTDivScale(22)
|
|
MAKECONSTDivScale(23)
|
|
MAKECONSTDivScale(24)
|
|
MAKECONSTDivScale(25)
|
|
MAKECONSTDivScale(26)
|
|
MAKECONSTDivScale(27)
|
|
MAKECONSTDivScale(28)
|
|
MAKECONSTDivScale(29)
|
|
MAKECONSTDivScale(30)
|
|
MAKECONSTDivScale(31)
|
|
MAKECONSTDivScale(32)
|
|
#undef MAKECONSTDivScale
|
|
|
|
inline void clearbuf (void *buff, int count, SDWORD clear)
|
|
{
|
|
SDWORD *b2 = (SDWORD *)buff;
|
|
while (count--)
|
|
*b2++ = clear;
|
|
}
|
|
|
|
inline void clearbufshort (void *buff, unsigned int count, WORD clear)
|
|
{
|
|
if (!count)
|
|
return;
|
|
SWORD *b2 = (SWORD *)buff;
|
|
if ((size_t)b2 & 2)
|
|
{
|
|
*b2++ = clear;
|
|
if (--count == 0)
|
|
return;
|
|
}
|
|
do
|
|
{
|
|
*b2++ = clear;
|
|
} while (--count);
|
|
}
|
|
|
|
inline SDWORD ksgn (SDWORD a)
|
|
{
|
|
if (a < 0) return -1;
|
|
else if (a > 0) return 1;
|
|
else return 0;
|
|
}
|