Add saturating_add() and saturating_sub() to integers - #352
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LLVM 23 pessimizes |
…ator code could use tidying up.
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NEON has all these ops natively. x86 has u8/i8/u16/i16, but 32-bit and 64-bit element widths need to be emulated; that emulation is the source of most of the complexity.