35 lines
1.7 KiB
JavaScript
35 lines
1.7 KiB
JavaScript
"use strict";
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exports.__esModule = true;
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exports.unsafeUniformIntDistribution = void 0;
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var UnsafeUniformIntDistributionInternal_1 = require("./internals/UnsafeUniformIntDistributionInternal");
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var ArrayInt_1 = require("./internals/ArrayInt");
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var UnsafeUniformArrayIntDistributionInternal_1 = require("./internals/UnsafeUniformArrayIntDistributionInternal");
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var safeNumberMaxSafeInteger = Number.MAX_SAFE_INTEGER;
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var sharedA = { sign: 1, data: [0, 0] };
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var sharedB = { sign: 1, data: [0, 0] };
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var sharedC = { sign: 1, data: [0, 0] };
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var sharedData = [0, 0];
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function uniformLargeIntInternal(from, to, rangeSize, rng) {
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var rangeSizeArrayIntValue = rangeSize <= safeNumberMaxSafeInteger
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? (0, ArrayInt_1.fromNumberToArrayInt64)(sharedC, rangeSize)
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: (0, ArrayInt_1.substractArrayInt64)(sharedC, (0, ArrayInt_1.fromNumberToArrayInt64)(sharedA, to), (0, ArrayInt_1.fromNumberToArrayInt64)(sharedB, from));
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if (rangeSizeArrayIntValue.data[1] === 0xffffffff) {
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rangeSizeArrayIntValue.data[0] += 1;
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rangeSizeArrayIntValue.data[1] = 0;
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}
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else {
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rangeSizeArrayIntValue.data[1] += 1;
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}
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(0, UnsafeUniformArrayIntDistributionInternal_1.unsafeUniformArrayIntDistributionInternal)(sharedData, rangeSizeArrayIntValue.data, rng);
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return sharedData[0] * 0x100000000 + sharedData[1] + from;
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}
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function unsafeUniformIntDistribution(from, to, rng) {
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var rangeSize = to - from;
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if (rangeSize <= 0xffffffff) {
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var g = (0, UnsafeUniformIntDistributionInternal_1.unsafeUniformIntDistributionInternal)(rangeSize + 1, rng);
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return g + from;
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}
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return uniformLargeIntInternal(from, to, rangeSize, rng);
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}
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exports.unsafeUniformIntDistribution = unsafeUniformIntDistribution;
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