7 ms·
x86 only has SIMD instructions for it, IIRC.
by carbonica 15y ago
x86 only has SIMD instructions for it, IIRC.
- onan_barbarian 15y agoYou do recall correctly. Further, x86 only provides these SIMD operations on 8-bit and 16-bit quantities, not on 32-bit or 64-bit quantities (although all these types can be packed into a SIMD register and operated on with at least some operations; for example regular, non-saturating add). SSE has a menagerie of non-orthogonal oddities, unfortunately; this is only one of them.
- adobriyan 15y agoAnd IIRC it's int16_t/uint16_t max.