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The global isNaN is not precise at all, and Number.isNaN is an ES6 feature that makes it preferrable to use assert's sameValue for NaN values, as it handles it internally using the comparison.
29 lines
682 B
JavaScript
29 lines
682 B
JavaScript
// Copyright 2016 Rick Waldron. All rights reserved.
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// This code is governed by the BSD license found in the LICENSE file.
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/*---
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esid: sec-applying-the-exp-operator
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description: If exponent is NaN, the result is NaN.
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---*/
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var exponent = NaN;
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var bases = [];
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bases[0] = -Infinity;
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bases[1] = -1.7976931348623157E308; //largest (by module) finite number
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bases[2] = -0.000000000000001;
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bases[3] = -0;
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bases[4] = +0
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bases[5] = 0.000000000000001;
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bases[6] = 1.7976931348623157E308; //largest finite number
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bases[7] = +Infinity;
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bases[8] = NaN;
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for (var i = 0; i < bases.length; i++) {
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assert.sameValue(
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bases[i] ** exponent,
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NaN,
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bases[i] + " ** " + exponent
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);
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}
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