24 lines
628 B
JavaScript
24 lines
628 B
JavaScript
var test = require('tape');
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var ss = require('../');
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function rnd(x) {
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return Math.round(x * 1000) / 1000;
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}
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test('root_mean_square', function(t) {
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// From http://en.wikipedia.org/wiki/Root_mean_square
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test('can get the RMS of two or more numbers', function(t) {
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t.equal(ss.root_mean_square([1, 1]), 1);
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t.equal(rnd(ss.root_mean_square([3, 4, 5])), 4.082);
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t.equal(rnd(ss.root_mean_square([-0.1, 5, -2, 10])), 5.679);
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t.end();
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});
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test('returns null for empty lists', function(t) {
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t.equal(ss.root_mean_square([]), null);
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t.end();
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});
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t.end();
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});
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