forked from lix-project/lix-website
64 lines
1.6 KiB
JavaScript
64 lines
1.6 KiB
JavaScript
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'use strict';
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var $TypeError = require('es-errors/type');
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// var $BigInt = GetIntrinsic('%BigInt%', true);
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// var $pow = GetIntrinsic('%Math.pow%');
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// var BinaryAnd = require('./BinaryAnd');
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// var BinaryOr = require('./BinaryOr');
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// var BinaryXor = require('./BinaryXor');
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// var modulo = require('./modulo');
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// var zero = $BigInt && $BigInt(0);
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// var negOne = $BigInt && $BigInt(-1);
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// var two = $BigInt && $BigInt(2);
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// https://262.ecma-international.org/11.0/#sec-bigintbitwiseop
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module.exports = function BigIntBitwiseOp(op, x, y) {
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if (op !== '&' && op !== '|' && op !== '^') {
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throw new $TypeError('Assertion failed: `op` must be `&`, `|`, or `^`');
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}
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if (typeof x !== 'bigint' || typeof y !== 'bigint') {
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throw new $TypeError('`x` and `y` must be BigInts');
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}
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if (op === '&') {
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return x & y;
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}
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if (op === '|') {
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return x | y;
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}
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return x ^ y;
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/*
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var result = zero;
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var shift = 0;
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while (x !== zero && x !== negOne && y !== zero && y !== negOne) {
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var xDigit = modulo(x, two);
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var yDigit = modulo(y, two);
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if (op === '&') {
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result += $pow(2, shift) * BinaryAnd(xDigit, yDigit);
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} else if (op === '|') {
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result += $pow(2, shift) * BinaryOr(xDigit, yDigit);
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} else if (op === '^') {
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result += $pow(2, shift) * BinaryXor(xDigit, yDigit);
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}
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shift += 1;
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x = (x - xDigit) / two;
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y = (y - yDigit) / two;
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}
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var tmp;
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if (op === '&') {
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tmp = BinaryAnd(modulo(x, two), modulo(y, two));
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} else if (op === '|') {
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tmp = BinaryAnd(modulo(x, two), modulo(y, two));
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} else {
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tmp = BinaryXor(modulo(x, two), modulo(y, two));
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}
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if (tmp !== 0) {
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result -= $pow(2, shift);
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}
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return result;
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*/
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};
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