| 1 | import { factory } from '../../utils/factory'
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| 2 | import { deepMap } from '../../utils/collection'
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| 3 | import { unaryPlusNumber } from '../../plain/number'
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| 4 |
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| 5 | const name = 'unaryPlus'
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| 6 | const dependencies = ['typed', 'config', 'BigNumber']
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| 7 |
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| 8 | export const createUnaryPlus = /* #__PURE__ */ factory(name, dependencies, ({ typed, config, BigNumber }) => {
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| 9 | /**
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| 10 | * Unary plus operation.
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| 11 | * Boolean values and strings will be converted to a number, numeric values will be returned as is.
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| 12 | *
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| 13 | * For matrices, the function is evaluated element wise.
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| 14 | *
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| 15 | * Syntax:
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| 16 | *
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| 17 | * math.unaryPlus(x)
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| 18 | *
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| 19 | * Examples:
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| 20 | *
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| 21 | * math.unaryPlus(3.5) // returns 3.5
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| 22 | * math.unaryPlus(1) // returns 1
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| 23 | *
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| 24 | * See also:
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| 25 | *
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| 26 | * unaryMinus, add, subtract
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| 27 | *
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| 28 | * @param {number | BigNumber | Fraction | string | Complex | Unit | Array | Matrix} x
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| 29 | * Input value
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| 30 | * @return {number | BigNumber | Fraction | Complex | Unit | Array | Matrix}
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| 31 | * Returns the input value when numeric, converts to a number when input is non-numeric.
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| 32 | */
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| 33 | const unaryPlus = typed(name, {
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| 34 | number: unaryPlusNumber,
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| 35 |
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| 36 | Complex: function (x) {
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| 37 | return x // complex numbers are immutable
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| 38 | },
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| 39 |
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| 40 | BigNumber: function (x) {
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| 41 | return x // bignumbers are immutable
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| 42 | },
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| 43 |
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| 44 | Fraction: function (x) {
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| 45 | return x // fractions are immutable
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| 46 | },
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| 47 |
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| 48 | Unit: function (x) {
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| 49 | return x.clone()
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| 50 | },
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| 51 |
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| 52 | 'Array | Matrix': function (x) {
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| 53 | // deep map collection, skip zeros since unaryPlus(0) = 0
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| 54 | return deepMap(x, unaryPlus, true)
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| 55 | },
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| 56 |
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| 57 | 'boolean | string': function (x) {
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| 58 | // convert to a number or bignumber
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| 59 | return (config.number === 'BigNumber') ? new BigNumber(+x) : +x
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| 60 | }
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| 61 | })
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| 62 |
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| 63 | return unaryPlus
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| 64 | })
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