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73 lines
2.3 KiB
73 lines
2.3 KiB
var count = (function powSqrt(Decimal) {
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var start = +new Date(),
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n, p, pr, r, rm, s, log, error,
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passed = 0,
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total = 0;
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if (typeof window === 'undefined') {
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log = console.log;
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error = console.error;
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} else {
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log = function (str) { document.body.innerHTML += str.replace('\n', '<br>') };
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error = function (str) { document.body.innerHTML += '<div style="color: red">' +
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str.replace('\n', '<br>') + '</div>' };
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}
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if (!Decimal && typeof require === 'function') Decimal = require('../decimal');
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log('\n Testing pow(0.5) 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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errors: true
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});
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for ( ; total < 100000; ) {
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// Get a random value in the range [0,1) with a random number of significant digits in the range [1, 40].
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r = Decimal.random( 1, Math.random() * 40 + 1 | 0 );
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// Change its exponent to a non-zero value of random length in the range (-9e15, 9e15).
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r.e = +( ( Math.random() < 0.5 ? '-' : '' ) +
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( n = Math.floor( Math.random() * 9e15 ) + '' ).slice( Math.random() * n.length | 0 ) );
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// Random rounding mode.
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Decimal.rounding = rm = Math.random() * 9 | 0;
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// Random precision in the range [1, 30].
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Decimal.precision = pr = Math.random() * 30 + 1 | 0;
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//log(' r: ' + r);
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p = r.pow(0.5);
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// sqrt is much faster than pow(0.5)
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s = r.sqrt();
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//log(' r.pow(0.5): ' + p);
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//log(' r.sqrt(): ' + s);
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if ( !p.eq(s) ) {
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error('\n Test number: ' + total + ' failed');
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error(' r: ' + r);
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error(' r.pow(0.5): ' + p);
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error(' r.sqrt(): ' + s);
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error(' precision: ' + pr);
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error(' rounding mode: ' + rm + '\n');
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process.exit();
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} else {
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passed++;
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}
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total++;
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if ( total % 1000 == 0 ) log(total);
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}
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log('\n ' + passed + ' of ' + total + ' tests passed in ' + (+new Date() - start) + ' ms \n');
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return [passed, total];
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})(this.Decimal);
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if (typeof module !== 'undefined' && module.exports) module.exports = count;
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