1 | import { deepMap } from '../../utils/collection.js';
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2 | import { factory } from '../../utils/factory.js';
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3 | import { isNaNNumber } from '../../plain/number/index.js';
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4 | var name = 'isNaN';
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5 | var dependencies = ['typed'];
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6 | export var createIsNaN = /* #__PURE__ */factory(name, dependencies, (_ref) => {
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7 | var {
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8 | typed
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9 | } = _ref;
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10 |
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11 | /**
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12 | * Test whether a value is NaN (not a number).
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13 | * The function supports types `number`, `BigNumber`, `Fraction`, `Unit` and `Complex`.
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14 | *
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15 | * The function is evaluated element-wise in case of Array or Matrix input.
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16 | *
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17 | * Syntax:
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18 | *
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19 | * math.isNaN(x)
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20 | *
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21 | * Examples:
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22 | *
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23 | * math.isNaN(3) // returns false
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24 | * math.isNaN(NaN) // returns true
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25 | * math.isNaN(0) // returns false
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26 | * math.isNaN(math.bignumber(NaN)) // returns true
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27 | * math.isNaN(math.bignumber(0)) // returns false
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28 | * math.isNaN(math.fraction(-2, 5)) // returns false
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29 | * math.isNaN('-2') // returns false
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30 | * math.isNaN([2, 0, -3, NaN]') // returns [false, false, false, true]
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31 | *
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32 | * See also:
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33 | *
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34 | * isNumeric, isNegative, isPositive, isZero, isInteger
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35 | *
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36 | * @param {number | BigNumber | Fraction | Unit | Array | Matrix} x Value to be tested
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37 | * @return {boolean} Returns true when `x` is NaN.
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38 | * Throws an error in case of an unknown data type.
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39 | */
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40 | return typed(name, {
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41 | number: isNaNNumber,
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42 | BigNumber: function BigNumber(x) {
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43 | return x.isNaN();
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44 | },
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45 | Fraction: function Fraction(x) {
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46 | return false;
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47 | },
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48 | Complex: function Complex(x) {
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49 | return x.isNaN();
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50 | },
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51 | Unit: function Unit(x) {
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52 | return Number.isNaN(x.value);
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53 | },
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54 | 'Array | Matrix': function ArrayMatrix(x) {
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55 | return deepMap(x, Number.isNaN);
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56 | }
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57 | });
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58 | }); |
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