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- const U32_MASK64 = /* @__PURE__ */ BigInt(2 ** 32 - 1);
- const _32n = /* @__PURE__ */ BigInt(32);
- // We are not using BigUint64Array, because they are extremely slow as per 2022
- function fromBig(n, le = false) {
- if (le)
- return { h: Number(n & U32_MASK64), l: Number((n >> _32n) & U32_MASK64) };
- return { h: Number((n >> _32n) & U32_MASK64) | 0, l: Number(n & U32_MASK64) | 0 };
- }
- function split(lst, le = false) {
- let Ah = new Uint32Array(lst.length);
- let Al = new Uint32Array(lst.length);
- for (let i = 0; i < lst.length; i++) {
- const { h, l } = fromBig(lst[i], le);
- [Ah[i], Al[i]] = [h, l];
- }
- return [Ah, Al];
- }
- const toBig = (h, l) => (BigInt(h >>> 0) << _32n) | BigInt(l >>> 0);
- // for Shift in [0, 32)
- const shrSH = (h, _l, s) => h >>> s;
- const shrSL = (h, l, s) => (h << (32 - s)) | (l >>> s);
- // Right rotate for Shift in [1, 32)
- const rotrSH = (h, l, s) => (h >>> s) | (l << (32 - s));
- const rotrSL = (h, l, s) => (h << (32 - s)) | (l >>> s);
- // Right rotate for Shift in (32, 64), NOTE: 32 is special case.
- const rotrBH = (h, l, s) => (h << (64 - s)) | (l >>> (s - 32));
- const rotrBL = (h, l, s) => (h >>> (s - 32)) | (l << (64 - s));
- // Right rotate for shift===32 (just swaps l&h)
- const rotr32H = (_h, l) => l;
- const rotr32L = (h, _l) => h;
- // Left rotate for Shift in [1, 32)
- const rotlSH = (h, l, s) => (h << s) | (l >>> (32 - s));
- const rotlSL = (h, l, s) => (l << s) | (h >>> (32 - s));
- // Left rotate for Shift in (32, 64), NOTE: 32 is special case.
- const rotlBH = (h, l, s) => (l << (s - 32)) | (h >>> (64 - s));
- const rotlBL = (h, l, s) => (h << (s - 32)) | (l >>> (64 - s));
- // JS uses 32-bit signed integers for bitwise operations which means we cannot
- // simple take carry out of low bit sum by shift, we need to use division.
- function add(Ah, Al, Bh, Bl) {
- const l = (Al >>> 0) + (Bl >>> 0);
- return { h: (Ah + Bh + ((l / 2 ** 32) | 0)) | 0, l: l | 0 };
- }
- // Addition with more than 2 elements
- const add3L = (Al, Bl, Cl) => (Al >>> 0) + (Bl >>> 0) + (Cl >>> 0);
- const add3H = (low, Ah, Bh, Ch) => (Ah + Bh + Ch + ((low / 2 ** 32) | 0)) | 0;
- const add4L = (Al, Bl, Cl, Dl) => (Al >>> 0) + (Bl >>> 0) + (Cl >>> 0) + (Dl >>> 0);
- const add4H = (low, Ah, Bh, Ch, Dh) => (Ah + Bh + Ch + Dh + ((low / 2 ** 32) | 0)) | 0;
- const add5L = (Al, Bl, Cl, Dl, El) => (Al >>> 0) + (Bl >>> 0) + (Cl >>> 0) + (Dl >>> 0) + (El >>> 0);
- const add5H = (low, Ah, Bh, Ch, Dh, Eh) => (Ah + Bh + Ch + Dh + Eh + ((low / 2 ** 32) | 0)) | 0;
- // prettier-ignore
- export { fromBig, split, toBig, shrSH, shrSL, rotrSH, rotrSL, rotrBH, rotrBL, rotr32H, rotr32L, rotlSH, rotlSL, rotlBH, rotlBL, add, add3L, add3H, add4L, add4H, add5H, add5L, };
- // prettier-ignore
- const u64 = {
- fromBig, split, toBig,
- shrSH, shrSL,
- rotrSH, rotrSL, rotrBH, rotrBL,
- rotr32H, rotr32L,
- rotlSH, rotlSL, rotlBH, rotlBL,
- add, add3L, add3H, add4L, add4H, add5H, add5L,
- };
- export default u64;
- //# sourceMappingURL=_u64.js.map
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