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52 lines
2.0 KiB
JavaScript
52 lines
2.0 KiB
JavaScript
// Copyright (C) 2015 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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es6id: 20.1.1.1
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description: Mathematical value of valid binary integer literals
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info: |
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20.1.1.1 Number ( [ value ] )
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When Number is called with argument number, the following steps are taken:
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1. If no arguments were passed to this function invocation, let n be +0.
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2. Else, let n be ToNumber(value).
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[...]
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7.1.3.1 ToNumber Applied to the String Type
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All grammar symbols not explicitly defined above have the definitions used
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in the Lexical Grammar for numeric literals (11.8.3)
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[...]
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The MV of BinaryIntegerLiteral :: 0b BinaryDigits is the MV of
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BinaryDigits.
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The MV of BinaryIntegerLiteral :: 0B BinaryDigits is the MV of
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BinaryDigits.
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The MV of BinaryDigits :: BinaryDigit is the MV of BinaryDigit.
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The MV of BinaryDigits :: BinaryDigits BinaryDigit is (the MV of
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BinaryDigits × 2) plus the MV of BinaryDigit.
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---*/
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assert.sameValue(Number('0b0'), 0, 'lower-case head');
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assert.sameValue(Number('0B0'), 0, 'upper-case head');
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assert.sameValue(Number('0b00'), 0, 'lower-case head with leading zeros');
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assert.sameValue(Number('0B00'), 0, 'upper-case head with leading zeros');
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assert.sameValue(Number('0b1'), 1, 'lower-case head');
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assert.sameValue(Number('0B1'), 1, 'upper-case head');
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assert.sameValue(Number('0b01'), 1, 'lower-case head with leading zeros');
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assert.sameValue(Number('0B01'), 1, 'upper-case head with leading zeros');
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assert.sameValue(Number('0b10'), 2, 'lower-case head');
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assert.sameValue(Number('0B10'), 2, 'upper-case head');
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assert.sameValue(Number('0b010'), 2, 'lower-case head with leading zeros');
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assert.sameValue(Number('0B010'), 2, 'upper-case head with leading zeros');
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assert.sameValue(Number('0b11'), 3, 'lower-case head');
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assert.sameValue(Number('0B11'), 3, 'upper-case head');
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assert.sameValue(Number('0b011'), 3, 'lower-case head with leading zeros');
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assert.sameValue(Number('0B011'), 3, 'upper-case head with leading zeros');
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