feat:node-modules

node_modules/mathjs/lib/esm/function/utils/isZero.js

@@ -0,0 +1,49 @@
+import { deepMap } from '../../utils/collection.js';
+import { factory } from '../../utils/factory.js';
+var name = 'isZero';
+var dependencies = ['typed', 'equalScalar'];
+export var createIsZero = /* #__PURE__ */factory(name, dependencies, _ref => {
+  var {
+    typed,
+    equalScalar
+  } = _ref;
+  /**
+   * Test whether a value is zero.
+   * The function can check for zero for types `number`, `BigNumber`, `Fraction`,
+   * `Complex`, and `Unit`.
+   *
+   * The function is evaluated element-wise in case of Array or Matrix input.
+   *
+   * Syntax:
+   *
+   *     math.isZero(x)
+   *
+   * Examples:
+   *
+   *    math.isZero(0)                      // returns true
+   *    math.isZero(2)                      // returns false
+   *    math.isZero(0.5)                    // returns false
+   *    math.isZero(math.bignumber(0))      // returns true
+   *    math.isZero(math.fraction(0))       // returns true
+   *    math.isZero(math.fraction(1,3))     // returns false
+   *    math.isZero(math.complex('2 - 4i')) // returns false
+   *    math.isZero(math.complex('0i'))     // returns true
+   *    math.isZero('0')                    // returns true
+   *    math.isZero('2')                    // returns false
+   *    math.isZero([2, 0, -3])             // returns [false, true, false]
+   *
+   * See also:
+   *
+   *    isNumeric, isPositive, isNegative, isInteger
+   *
+   * @param {number | BigNumber | bigint | Complex | Fraction | Unit | Array | Matrix} x       Value to be tested
+   * @return {boolean}  Returns true when `x` is zero.
+   *                    Throws an error in case of an unknown data type.
+   */
+  return typed(name, {
+    'number | BigNumber | Complex | Fraction': x => equalScalar(x, 0),
+    bigint: x => x === 0n,
+    Unit: typed.referToSelf(self => x => typed.find(self, x.valueType())(x.value)),
+    'Array | Matrix': typed.referToSelf(self => x => deepMap(x, self))
+  });
+});