There are no AVX counterparts. AVX just adds wider instructions (e.g. 256 bit registers and 512 bit register respectively for AVX-512). Since the problem in qu

There are no AVX counterparts. AVX just adds wider instructions (e.g. 256 bit registers and 512 bit register respectively for AVX-512). Since the problem in question is concerned with 16-digit integers (i.e. 128 bit wide), SSSE3 is a perfect match. AVX instructions could be used to convert two numbers at a time, though.