diff options
author | Kat Marchán <kzm@sykosomatic.org> | 2017-07-14 10:52:48 -0700 |
---|---|---|
committer | James M Snell <jasnell@gmail.com> | 2017-07-17 08:49:02 -0700 |
commit | 24f43903b4a2f5aa73a99e6f3d4cc62d559cf94b (patch) | |
tree | 9c32bd08c43de8721e54cd846d816fbe6cdf056e /deps/npm/node_modules/worker-farm/examples/pi/calc.js | |
parent | fa73087fcf4bd14db7791120e688a0a508885b64 (diff) | |
download | android-node-v8-24f43903b4a2f5aa73a99e6f3d4cc62d559cf94b.tar.gz android-node-v8-24f43903b4a2f5aa73a99e6f3d4cc62d559cf94b.tar.bz2 android-node-v8-24f43903b4a2f5aa73a99e6f3d4cc62d559cf94b.zip |
deps: upgrade npm to 5.3.0
PR-URL: https://github.com/nodejs/node/pull/14235
Reviewed-By: Jeremiah Senkpiel <fishrock123@rocketmail.com>
Reviewed-By: Refael Ackermann <refack@gmail.com>
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Yuta Hiroto <hello@about-hiroppy.com>
Reviewed-By: Gibson Fahnestock <gibfahn@gmail.com>
Reviewed-By: Tobias Nießen <tniessen@tnie.de>
Reviewed-By: James M Snell <jasnell@gmail.com>
Diffstat (limited to 'deps/npm/node_modules/worker-farm/examples/pi/calc.js')
-rw-r--r-- | deps/npm/node_modules/worker-farm/examples/pi/calc.js | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/deps/npm/node_modules/worker-farm/examples/pi/calc.js b/deps/npm/node_modules/worker-farm/examples/pi/calc.js new file mode 100644 index 0000000000..42c77c2bd2 --- /dev/null +++ b/deps/npm/node_modules/worker-farm/examples/pi/calc.js @@ -0,0 +1,22 @@ +'use strict' + +/* A simple π estimation function using a Monte Carlo method + * For 0 to `points`, take 2 random numbers < 1, square and add them to + * find the area under that point in a 1x1 square. If that area is <= 1 + * then it's *within* a quarter-circle, otherwise it's outside. + * Take the number of points <= 1 and multiply it by 4 and you have an + * estimate! + * Do this across multiple processes and average the results to + * increase accuracy. + */ + +module.exports = function (points, callback) { + let inside = 0 + , i = points + + while (i--) + if (Math.pow(Math.random(), 2) + Math.pow(Math.random(), 2) <= 1) + inside++ + + callback(null, (inside / points) * 4) +}
\ No newline at end of file |