mirror of
https://github.com/mealie-recipes/mealie.git
synced 2025-05-24 01:12:54 -04:00
788e176b16
* move api clients and rename * organize recipes composables * rewrite useRecipeContext * refactor(frontend): ♻️ abstract common ingredient functionality. * feat(frontend): ✨ add scale, and back to recipe button + hide ingredients if none * update regex to mach 11. instead of just 1. * minor UX improvements Co-authored-by: Hayden K <hay-kot@pm.me>
77 lines
1.5 KiB
TypeScript
77 lines
1.5 KiB
TypeScript
/* frac.js (C) 2012-present SheetJS -- http://sheetjs.com */
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/* https://developer.aliyun.com/mirror/npm/package/frac/v/0.3.0 Apache license */
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function frac(x: number, D: number, mixed: Boolean) {
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let n1 = Math.floor(x);
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let d1 = 1;
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let n2 = n1 + 1;
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let d2 = 1;
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if (x !== n1)
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while (d1 <= D && d2 <= D) {
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const m = (n1 + n2) / (d1 + d2);
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if (x === m) {
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if (d1 + d2 <= D) {
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d1 += d2;
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n1 += n2;
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d2 = D + 1;
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} else if (d1 > d2) d2 = D + 1;
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else d1 = D + 1;
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break;
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} else if (x < m) {
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n2 = n1 + n2;
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d2 = d1 + d2;
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} else {
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n1 = n1 + n2;
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d1 = d1 + d2;
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}
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}
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if (d1 > D) {
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d1 = d2;
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n1 = n2;
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}
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if (!mixed) return [0, n1, d1];
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const q = Math.floor(n1 / d1);
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return [q, n1 - q * d1, d1];
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}
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function cont(x: number, D: number, mixed: Boolean) {
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const sgn = x < 0 ? -1 : 1;
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let B = x * sgn;
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let P_2 = 0;
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let P_1 = 1;
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let P = 0;
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let Q_2 = 1;
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let Q_1 = 0;
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let Q = 0;
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let A = Math.floor(B);
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while (Q_1 < D) {
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A = Math.floor(B);
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P = A * P_1 + P_2;
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Q = A * Q_1 + Q_2;
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if (B - A < 0.00000005) break;
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B = 1 / (B - A);
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P_2 = P_1;
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P_1 = P;
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Q_2 = Q_1;
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Q_1 = Q;
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}
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if (Q > D) {
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if (Q_1 > D) {
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Q = Q_2;
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P = P_2;
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} else {
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Q = Q_1;
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P = P_1;
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}
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}
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if (!mixed) return [0, sgn * P, Q];
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const q = Math.floor((sgn * P) / Q);
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return [q, sgn * P - q * Q, Q];
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}
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export const useFraction = function () {
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return {
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frac,
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cont,
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};
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};
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