ref: 77d23bae0f7d64ea958c8df410cf029392c6c48c
dir: /rc/bin/approx/
#!/bin/rc if(! ~ $#* 3){ echo usage: approx ratio min max exit usage } echo $1 $2 $3 | awk ' { y=$1; min=$2; max=$3; for(i = min; i <= max; i++){ k = int(y*i+0.5); z = (k/i/y-1)*100; if(z < 0) z = -z; if(i == min || z < zm){ zm = z; printf("%d/%d\t%g\t%.2g%%\n", k, i, k/i, z); } } exit } '