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26 lines
922 B
JavaScript
26 lines
922 B
JavaScript
// Copyright (C) 2016 The V8 Project 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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esid: sec-math.fround
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description: >
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Convert to binary32 format and than to binary64 format
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info: |
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Math.fround ( x )
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[...]
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3. Let x32 be the result of converting x to a value in IEEE 754-2008 binary32
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format using roundTiesToEven.
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4. Let x64 be the result of converting x32 to a value in IEEE 754-2008
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binary64 format.
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5. Return the ECMAScript Number value corresponding to x64.
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---*/
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assert.sameValue(Math.fround(4294967295), 4294967296, "2**32-1");
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assert.sameValue(Math.fround(4294967296), 4294967296, "2**32");
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assert.sameValue(Math.fround(4294967297), 4294967296, "2**32+1");
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assert.sameValue(Math.fround(0.1), 0.10000000149011612, "0.1");
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assert.sameValue(Math.fround(0.2), 0.20000000298023224, "0.2");
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assert.sameValue(Math.fround(0.5), 0.5, "0.5");
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