feat:node-modules

node_modules/mathjs/lib/cjs/function/set/setIsSubset.js

@@ -0,0 +1,68 @@
+"use strict";
+
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+exports.createSetIsSubset = void 0;
+var _array = require("../../utils/array.js");
+var _factory = require("../../utils/factory.js");
+const name = 'setIsSubset';
+const dependencies = ['typed', 'size', 'subset', 'compareNatural', 'Index'];
+const createSetIsSubset = exports.createSetIsSubset = /* #__PURE__ */(0, _factory.factory)(name, dependencies, _ref => {
+  let {
+    typed,
+    size,
+    subset,
+    compareNatural,
+    Index
+  } = _ref;
+  /**
+   * Check whether a (multi)set is a subset of another (multi)set. (Every element of set1 is the element of set2.)
+   * Multi-dimension arrays will be converted to single-dimension arrays before the operation.
+   *
+   * Syntax:
+   *
+   *    math.setIsSubset(set1, set2)
+   *
+   * Examples:
+   *
+   *    math.setIsSubset([1, 2], [3, 4, 5, 6])        // returns false
+   *    math.setIsSubset([3, 4], [3, 4, 5, 6])        // returns true
+   *
+   * See also:
+   *
+   *    setUnion, setIntersect, setDifference
+   *
+   * @param {Array | Matrix}    a1  A (multi)set
+   * @param {Array | Matrix}    a2  A (multi)set
+   * @return {boolean} Returns true when a1 is a subset of a2, returns false otherwise
+   */
+  return typed(name, {
+    'Array | Matrix, Array | Matrix': function (a1, a2) {
+      if (subset(size(a1), new Index(0)) === 0) {
+        // empty is a subset of anything
+        return true;
+      } else if (subset(size(a2), new Index(0)) === 0) {
+        // anything is not a subset of empty
+        return false;
+      }
+      const b1 = (0, _array.identify)((0, _array.flatten)(Array.isArray(a1) ? a1 : a1.toArray()).sort(compareNatural));
+      const b2 = (0, _array.identify)((0, _array.flatten)(Array.isArray(a2) ? a2 : a2.toArray()).sort(compareNatural));
+      let inb2;
+      for (let i = 0; i < b1.length; i++) {
+        inb2 = false;
+        for (let j = 0; j < b2.length; j++) {
+          if (compareNatural(b1[i].value, b2[j].value) === 0 && b1[i].identifier === b2[j].identifier) {
+            // the identifier is always a decimal int
+            inb2 = true;
+            break;
+          }
+        }
+        if (inb2 === false) {
+          return false;
+        }
+      }
+      return true;
+    }
+  });
+});