diff options
Diffstat (limited to 'apps/codecs/lib/codeclib_misc.h')
| -rw-r--r-- | apps/codecs/lib/codeclib_misc.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/apps/codecs/lib/codeclib_misc.h b/apps/codecs/lib/codeclib_misc.h index f3ec209..f3b1805 100644 --- a/apps/codecs/lib/codeclib_misc.h +++ b/apps/codecs/lib/codeclib_misc.h @@ -65,6 +65,7 @@ static inline int32_t MULT32(int32_t x, int32_t y) { magic.whole = (int64_t)x * y; return magic.halves.hi; } + static inline int32_t MULT31(int32_t x, int32_t y) { return MULT32(x,y)<<1; } @@ -75,6 +76,12 @@ static inline int32_t MULT31_SHIFT15(int32_t x, int32_t y) { return ((uint32_t)(magic.halves.lo)>>15) | ((magic.halves.hi)<<17); } +static inline int32_t MULT31_SHIFT16(int32_t x, int32_t y) { + union magic magic; + magic.whole = (int64_t)x * y; + return ((uint32_t)(magic.halves.lo)>>16) | ((magic.halves.hi)<<16); +} + #else /* 32 bit multiply, more portable but less accurate */ |