mirror of
https://github.com/MikeMcl/decimal.js.git
synced 2024-10-27 20:34:12 +00:00
43 lines
1.2 KiB
JavaScript
43 lines
1.2 KiB
JavaScript
if (typeof T === 'undefined') require('../setup');
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(function () {
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T('pow against sqrt');
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Decimal.config({
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toExpNeg: -7,
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toExpPos: 21,
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minE: -9e15,
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maxE: 9e15
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});
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for (var e, n, p, r, s; total < 10000; ) {
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// Get a random value in the range [0,1) with a random number of significant digits
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// in the range [1, 40], as a string in exponential format.
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e = Decimal.random( Math.random() * 40 + 1 | 0 ).toExponential();
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// Change exponent to a non-zero value of random length in the range (-9e15, 9e15).
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r = new Decimal(e.slice(0, e.indexOf('e') + 1) + ( Math.random() < 0.5 ? '-' : '' ) +
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( n = Math.floor( Math.random() * 9e15 ) + '' ).slice( Math.random() * n.length | 0 ));
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//T.write(' r: ' + r);
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// Random rounding mode.
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Decimal.rounding = Math.random() * 9 | 0;
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// Random precision in the range [1, 40].
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Decimal.precision = Math.random() * 40 + 1 | 0;
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p = r.pow(0.5);
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//T.write(' r.pow(0.5): ' + p);
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// sqrt is much faster than pow(0.5)
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s = r.sqrt();
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//T.write(' r.sqrt(): ' + s);
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T.assertEqual(p.valueOf(), s.valueOf());
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}
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T.stop();
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})();
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