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mathops: add MAC64, MLS64, and MLS16

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MAC64: 64 += 32 x 32 (bits)
MLS64: 64 -= 32 x 32
MLS16: 32 -= 16 x 16

Originally committed as revision 14198 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Måns Rullgård 2008-07-13 12:22:57 +00:00
parent 71c465a151
commit ffa978f157
1 changed files with 12 additions and 0 deletions
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12
libavcodec/mathops.h
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@ -61,6 +61,14 @@ static av_always_inline int MULH(int a, int b){
# define MUL64(a,b) ((int64_t)(a) * (int64_t)(b))
#endif
#ifndef MAC64
# define MAC64(d, a, b) ((d) += MUL64(a, b))
#endif
#ifndef MLS64
# define MLS64(d, a, b) ((d) -= MUL64(a, b))
#endif
/* signed 16x16 -> 32 multiply add accumulate */
#ifndef MAC16
# define MAC16(rt, ra, rb) rt += (ra) * (rb)
@ -71,5 +79,9 @@ static av_always_inline int MULH(int a, int b){
# define MUL16(ra, rb) ((ra) * (rb))
#endif
#ifndef MLS16
# define MLS16(rt, ra, rb) ((rt) -= (ra) * (rb))
#endif
#endif /* FFMPEG_MATHOPS_H */