8548725f29
rhadd = (x+y+1)>>1 Implemented as: (x>>1) + (y>>1) + ((x&1)|(y&1)) This prevents us having to do assembly addition and overflow detection Reviewed-by: Tom Stellard <thomas.stellard@amd.com> llvm-svn: 188477
7 lines
359 B
C++
7 lines
359 B
C++
//rhadd = (x+y+1)>>1
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//This can be simplified to x>>1 + y>>1 + (1 if either x or y have the 1s bit set)
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//This saves us having to do any checks for overflow in the addition sums
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_CLC_OVERLOAD _CLC_DEF __CLC_GENTYPE rhadd(__CLC_GENTYPE x, __CLC_GENTYPE y) {
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return (x>>(__CLC_GENTYPE)1)+(y>>(__CLC_GENTYPE)1)+((x&(__CLC_GENTYPE)1)|(y&(__CLC_GENTYPE)1));
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}
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