main
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Last change
on this file since d565449 was d565449, checked in by stefan toskovski <stefantoska84@…>, 4 weeks ago |
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Update repo after prototype presentation
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Property mode
set to
100644
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File size:
486 bytes
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| 1 | 'use strict';
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| 2 |
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| 3 | var modulo = require('./modulo');
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| 4 | var ToNumber = require('./ToNumber');
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| 5 | var truncate = require('./truncate');
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| 6 |
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| 7 | var isFinite = require('../helpers/isFinite');
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| 8 |
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| 9 | // https://262.ecma-international.org/14.0/#sec-toint8
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| 10 |
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| 11 | module.exports = function ToInt8(argument) {
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| 12 | var number = ToNumber(argument);
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| 13 | if (!isFinite(number) || number === 0) {
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| 14 | return 0;
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| 15 | }
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| 16 | var int = truncate(number);
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| 17 | var int8bit = modulo(int, 0x100);
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| 18 | return int8bit >= 0x80 ? int8bit - 0x100 : int8bit;
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| 19 | };
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