mirror of
https://github.com/MikeMcl/decimal.js.git
synced 2024-10-27 20:34:12 +00:00
231 lines
7.3 KiB
JavaScript
231 lines
7.3 KiB
JavaScript
if (typeof T === 'undefined') require('../setup');
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T('toNearest', function () {
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function isMinusZero(n) {
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return n.isZero() && n.isNegative();
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}
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Decimal.config({
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precision: 20,
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rounding: 4,
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toExpNeg: -9e15,
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toExpPos: 9e15,
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minE: -9e15,
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maxE: 9e15
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});
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var t = function (actual) {
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T.assert(actual);
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}
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t(!isMinusZero(new Decimal(0).toNearest(0)));
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t( isMinusZero(new Decimal(-1).toNearest(0)));
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t( isMinusZero(new Decimal(-0).toNearest(0)));
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t(!isMinusZero(new Decimal(1).toNearest(0)));
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t(!isMinusZero(new Decimal(1).toNearest(-0)));
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t(!isMinusZero(new Decimal(1).toNearest(-3)));
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t( isMinusZero(new Decimal(-1).toNearest(-3)));
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t = function (expected, n, v, rm) {
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T.assertEqual(expected, new Decimal(n).toNearest(v, rm).valueOf());
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}
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t('Infinity', Infinity);
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t('-Infinity', -Infinity);
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t('NaN', NaN);
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t('NaN', NaN, NaN);
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t('NaN', NaN, Infinity);
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t('NaN', NaN, -Infinity);
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t('NaN', NaN, 0);
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t('NaN', NaN, -0);
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t('Infinity', '9.999e+9000000000000000', '1e+9000000000000001');
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t('Infinity', '9.999e+9000000000000000', '-1e+9000000000000001');
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t('-Infinity', '-9.999e+9000000000000000', '1e+9000000000000001');
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t('-Infinity', '-9.999e+9000000000000000', '-1e+9000000000000001');
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t('9.999e+9000000000000000', '9.999e+9000000000000000');
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t('-9.999e+9000000000000000', '-9.999e+9000000000000000');
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t('NaN', 123.456, NaN);
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t('Infinity', 123.456, Infinity);
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t('Infinity', 123.456, -Infinity);
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t('0', 123.456, 0);
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t('0', 123.456, '-0');
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t('NaN', -123.456, NaN);
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t('-Infinity', -123.456, Infinity);
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t('-Infinity', -123.456, -Infinity);
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t('-0', -123.456, '-0');
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t('0', 0, 0);
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t('Infinity', 0, Infinity);
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t('Infinity', 0, -Infinity);
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t('-Infinity', -0, Infinity);
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t('-Infinity', -0, -Infinity);
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t('0', 1, -3);
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t('-0', -1, -3);
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t('3', 1.5, -3, 0);
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t('-0', -1.5, -3, 1);
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t('-3', -1.5, -3, 2);
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t('123', 123.456);
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t('123', 123.456, 1);
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t('123.5', 123.456, 0.1);
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t('123.46', 123.456, 0.01);
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t('123.456', 123.456, 0.001);
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t('123', 123.456, -1);
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t('123.5', 123.456, -0.1);
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t('123.46', 123.456, -0.01);
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t('123.456', 123.456, -0.001);
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t('124', 123.456, '-2');
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t('123.4', 123.456, '-0.2');
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t('123.46', 123.456, '-0.02');
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t('123.456', 123.456, '-0.002');
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t('83105511540', '83105511539.5', 1, 4);
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t('83105511539', '83105511539.499999999999999999999999999999', 1, 4);
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t('83105511539', '83105511539.5', '1', 5);
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t('83105511540', '83105511539.5000000000000000000001', 1, 5);
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Decimal.precision = 3;
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t('83105511540', '83105511539.5', new Decimal(1), 4);
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t('83105511539', '83105511539.499999999999999999999999999999', 1, 4);
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t('83105511539', '83105511539.5', new Decimal('1'), 5);
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t('83105511540', '83105511539.5000000000000000000001', 1, 5);
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Decimal.precision = 20;
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t('83105511540', '83105511539.5', -1, 4);
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t('83105511539', '83105511539.499999999999999999999999999999', -1, 4);
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t('83105511539', '83105511539.5', '-1', 5);
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t('83105511540', '83105511539.5000000000000000000001', -1, 5);
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t('-83105511540', '-83105511539.5', new Decimal(-1), 4);
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t('-83105511539', '-83105511539.499999999999999999999999999999', 1, 4);
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t('-83105511539', '-83105511539.5', new Decimal('-1'), 5);
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t('-83105511540', '-83105511539.5000000000000000000001', -1, 5);
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t('83105511540', '83105511539.5', 1, 0);
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t('83105511539', '83105511539.5', 1, 1);
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t('83105511540', '83105511539.5', 1, 2);
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t('83105511539', '83105511539.5', 1, 3);
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t('83105511540', '83105511539.5', 1, 4);
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t('83105511539', '83105511539.5', 1, 5);
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t('83105511540', '83105511539.5', 1, 6);
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t('83105511540', '83105511539.5', 1, 7);
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t('83105511539', '83105511539.5', 1, 8);
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t('83105511539', '83105511539.499999999999999999999999999999', void 0, 0);
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t('83105511539', '83105511539.499999999999999999999999999999', 1, 1);
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t('83105511539', '83105511539.499999999999999999999999999999', void 0, 2);
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t('83105511539', '83105511539.499999999999999999999999999999', 1, 3);
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t('83105511539', '83105511539.499999999999999999999999999999', void 0, 4);
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t('83105511539', '83105511539.499999999999999999999999999999', 1, 5);
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t('83105511539', '83105511539.499999999999999999999999999999', void 0, 6);
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t('83105511539', '83105511539.499999999999999999999999999999', 1, 7);
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t('83105511539', '83105511539.499999999999999999999999999999', void 0, 8);
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t('83105511540', '83105511539.5000000000000000000001', void 0, 0);
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t('83105511539', '83105511539.5000000000000000000001', 1, 1);
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t('83105511540', '83105511539.5000000000000000000001', void 0, 2);
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t('83105511539', '83105511539.5000000000000000000001', 1, 3);
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t('83105511540', '83105511539.5000000000000000000001', void 0, 4);
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t('83105511540', '83105511539.5000000000000000000001', 1, 5);
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t('83105511540', '83105511539.5000000000000000000001', void 0, 6);
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t('83105511540', '83105511539.5000000000000000000001', 1, 7);
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t('83105511540', '83105511539.5000000000000000000001', void 0, 8);
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Decimal.rounding = 0;
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t('83105511540', '83105511539.5');
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Decimal.rounding = 1;
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t('83105511539', '83105511539.5');
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t('3847570', '3847561.00000749', 10, 0);
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t('42840000000000000', '42835000000000001', '1e+13', 0);
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t('42830000000000000', '42835000000000001', '1e+13', 1);
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t('42840000000000000', '42835000000000000.0002', '1e+13', 0);
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t('42830000000000000', '42835000000000000.0002', '1e+13', 1);
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t('500', '449.999', 100, 0);
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t('400', '449.999', 100, 1);
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t('500', '449.999', 100, 2);
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t('400', '449.999', 100, 3);
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t('400', '449.999', 100, 4);
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t('400', '449.999', 100, 5);
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t('400', '449.999', 100, 6);
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t('400', '449.999', 100, 7);
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t('400', '449.999', 100, 8);
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t('-500', '-449.999', 100, 0);
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t('-400', '-449.999', 100, 1);
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t('-400', '-449.999', 100, 2);
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t('-500', '-449.999', 100, 3);
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t('-400', '-449.999', 100, 4);
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t('-400', '-449.999', 100, 5);
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t('-400', '-449.999', 100, 6);
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t('-400', '-449.999', 100, 7);
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t('-400', '-449.999', 100, 8);
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t('500', '450', 100, 0);
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t('400', '450', 100, 1);
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t('500', '450', 100, 2);
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t('400', '450', 100, 3);
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t('500', '450', 100, 4);
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t('400', '450', 100, 5);
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t('400', '450', 100, 6);
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t('500', '450', 100, 7);
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t('400', '450', 100, 8);
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t('-500', '-450', 100, 0);
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t('-400', '-450', 100, 1);
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t('-400', '-450', 100, 2);
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t('-500', '-450', 100, 3);
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t('-500', '-450', 100, 4);
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t('-400', '-450', 100, 5);
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t('-400', '-450', 100, 6);
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t('-400', '-450', 100, 7);
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t('-500', '-450', 100, 8);
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Decimal.rounding = 0;
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t('500', '450.001', 100);
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Decimal.rounding = 1;
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t('400', '450.001', 100);
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Decimal.rounding = 2;
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t('500', '450.001', 100);
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Decimal.rounding = 3;
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t('400', '450.001', 100);
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Decimal.rounding = 4;
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t('500', '450.001', 100);
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Decimal.rounding = 5;
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t('500', '450.001', 100);
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Decimal.rounding = 6;
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t('500', '450.001', 100);
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Decimal.rounding = 7;
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t('500', '450.001', 100);
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Decimal.rounding = 8;
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t('500', '450.001', 100);
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Decimal.rounding = 0;
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t('-500', '-450.001', 100);
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Decimal.rounding = 1;
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t('-400', '-450.001', 100);
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Decimal.rounding = 2;
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t('-400', '-450.001', 100);
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Decimal.rounding = 3;
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t('-500', '-450.001', 100);
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Decimal.rounding = 4;
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t('-500', '-450.001', 100);
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Decimal.rounding = 5;
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t('-500', '-450.001', 100);
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Decimal.rounding = 6;
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t('-500', '-450.001', 100);
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Decimal.rounding = 7;
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t('-500', '-450.001', 100);
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Decimal.rounding = 8;
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t('-500', '-450.001', 100);
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});
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