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