Commit f2c694af authored by Måns Rullgård's avatar Måns Rullgård
Browse files

Add UMULH()

This function/macro returns the high half of the unsigned 64-bit
product of two unsigned 32-bit operands.

Originally committed as revision 21463 to svn://svn.ffmpeg.org/ffmpeg/trunk
parent 900479bb
......@@ -53,6 +53,12 @@ static av_always_inline int MULH(int a, int b){
}
#endif
#ifndef UMULH
static av_always_inline unsigned UMULH(unsigned a, unsigned b){
return ((uint64_t)(a) * (uint64_t)(b))>>32;
}
#endif
#ifndef MUL64
# define MUL64(a,b) ((int64_t)(a) * (int64_t)(b))
#endif
......
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