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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.
13 lines
461 B
JavaScript
13 lines
461 B
JavaScript
// Copyright 2009 the Sputnik authors. 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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info: If x is less than -1, Math.asin(x) is NaN
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es5id: 15.8.2.3_A3
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description: Checking if Math.asin(x) is NaN, where x is less than -1
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---*/
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assert.sameValue(Math.asin(-1.000000000000001), NaN, "-1.000000000000001");
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assert.sameValue(Math.asin(-2), NaN, "-2");
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assert.sameValue(Math.asin(-Infinity), NaN, "-Infinity");
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