Last active
August 29, 2015 14:14
-
-
Save greymd/93d495bd3cca88e31dae to your computer and use it in GitHub Desktop.
円周率を求めるシェル芸
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| #/bin/bash | |
| #NUMが大きいほど精度がよくなる | |
| NUM=50; paste <(seq 1 2 $NUM) <(seq $NUM) | \ | |
| awk 'NF==2' | awk '{print $1"+ "$2"^2/"}' | \ | |
| xargs | awk '$0="4/ "$0" 1"' | xargs -n 1 | \ | |
| sed 's/^/(/g'| perl -anle '{print $_}END{print ")" x $.}' | \ | |
| xargs | awk '$0="scale=20;"$0' | bc |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment