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43 lines
1.4 KiB
JavaScript
43 lines
1.4 KiB
JavaScript
// Fractions
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// load math.js
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var math = require('../index');
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// configure the default type of numbers as Fractions
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math.config({
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number: 'fraction' // Default type of number:
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// 'number' (default), 'bignumber', or 'fraction'
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});
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console.log('round-off errors with numbers');
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print(math.add(0.1, 0.2)); // Number, 0.30000000000000004
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print(math.divide(0.3, 0.2)); // Number, 1.4999999999999998
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console.log();
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console.log('no round-off errors with Fractions');
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print(math.add(math.fraction(0.1), math.fraction(0.2))); // Fraction, 0.3
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print(math.divide(math.fraction(0.3), math.fraction(0.2))); // Fraction, 1.5
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console.log();
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console.log('Represent an infinite number of repeating digits');
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print(math.fraction('1/3')); // Fraction, 0.(3)
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print(math.fraction('2/7')); // Fraction, 0.(285714)
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print(math.fraction('23/11')); // Fraction, 2.(09)
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console.log();
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// one can work conveniently with fractions using the expression parser.
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// note though that Fractions are only supported by basic arithmetic functions
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console.log('use fractions in the expression parser');
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print(math.eval('0.1 + 0.2')); // Fraction, 0.3
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print(math.eval('0.3 / 0.2')); // Fraction, 1.5
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print(math.eval('23 / 11')); // Fraction, 2.(09)
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console.log();
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/**
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* Helper function to output a value in the console. Value will be formatted.
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* @param {*} value
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*/
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function print (value) {
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console.log(math.format(value));
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}
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