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Questions - saturation-arithmetic

What is the most efficient way to handle integer multiplication overflow with saturation with ARM Neon intrinsics?

I have the following multiplication between 2 16 bit vectors: int16x8_t dx; int16x8_t dy; int16x8_t dxdy = vmulq_s16(dx, dy); In case dx and dy are both large enough, the result will overflow. I woul...
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Elad Maimoni

arm

simd

intrinsics

neon

saturation-arithmetic

Votes: 0

Answers: 1

Latest Answer

Here’s another version. It does pretty much the same as your code, but uses fewer instructions for that, e.g. NEON has widening multiplication. I’m not sure if it’s faster or slower (apparently there’...
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