You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
40 lines
1.1 KiB
40 lines
1.1 KiB
if (typeof T === 'undefined') require('../setup');
|
|
|
|
T('pow against sqrt', function () {
|
|
|
|
Decimal.config({
|
|
toExpNeg: -7,
|
|
toExpPos: 21,
|
|
minE: -9e15,
|
|
maxE: 9e15
|
|
});
|
|
|
|
for (var e, n, p, r, s; total < 10000; ) {
|
|
|
|
// Get a random value in the range [0,1) with a random number of significant digits
|
|
// in the range [1, 40], as a string in exponential format.
|
|
e = Decimal.random( Math.random() * 40 + 1 | 0 ).toExponential();
|
|
|
|
// Change exponent to a non-zero value of random length in the range (-9e15, 9e15).
|
|
r = new Decimal(e.slice(0, e.indexOf('e') + 1) + ( Math.random() < 0.5 ? '-' : '' ) +
|
|
( n = Math.floor( Math.random() * 9e15 ) + '' ).slice( Math.random() * n.length | 0 ));
|
|
//console.log(' r: ' + r);
|
|
|
|
// Random rounding mode.
|
|
Decimal.rounding = Math.random() * 9 | 0;
|
|
|
|
// Random precision in the range [1, 40].
|
|
Decimal.precision = Math.random() * 40 + 1 | 0;
|
|
|
|
p = r.pow(0.5);
|
|
//console.log(' r.pow(0.5): ' + p);
|
|
|
|
// sqrt is much faster than pow(0.5)
|
|
s = r.sqrt();
|
|
//console.log(' r.sqrt(): ' + s);
|
|
|
|
T.assertEqual(p.valueOf(), s.valueOf());
|
|
}
|
|
});
|
|
|