feat:node-modules

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

@@ -0,0 +1,62 @@
+import { flatten, identify } from '../../utils/array.js';
+import { factory } from '../../utils/factory.js';
+var name = 'setIsSubset';
+var dependencies = ['typed', 'size', 'subset', 'compareNatural', 'Index'];
+export var createSetIsSubset = /* #__PURE__ */factory(name, dependencies, _ref => {
+  var {
+    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 Array__Matrix_Array__Matrix(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;
+      }
+      var b1 = identify(flatten(Array.isArray(a1) ? a1 : a1.toArray()).sort(compareNatural));
+      var b2 = identify(flatten(Array.isArray(a2) ? a2 : a2.toArray()).sort(compareNatural));
+      var inb2;
+      for (var i = 0; i < b1.length; i++) {
+        inb2 = false;
+        for (var 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;
+    }
+  });
+});