shithub: asif

ref: a0974e00aa0a8bc99bfdf8355fb6277987ed5ae2
dir: /awk/hex.awk/

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#!/bin/awk -f
function hex(s, v){
	if(s ~ /^0x/)
		s = substr(s, 3)
	for(n=1; n<=length(s); n++)
		v = v * 16 + h[substr(s, n, 1)]
	return v
}
BEGIN{
	for(n=0; n<16; n++){
		h[sprintf("%x", n)] = n
		h[sprintf("%X", n)] = n
	}
}