import { factory } from '../../utils/factory.js'

import { deepMap } from '../../utils/collection.js'

import { expNumber } from '../../plain/number/index.js'

const name = 'exp'

const dependencies = ['typed']

export const createExp = /* #__PURE__ */ factory(name, dependencies, ({ typed }) => {

/**

* Calculate the exponent of a value.

* For matrices, the function is evaluated element wise.

*

* Syntax:

*

* math.exp(x)

*

* Examples:

*

* math.exp(2) // returns number 7.3890560989306495

* math.pow(math.e, 2) // returns number 7.3890560989306495

* math.log(math.exp(2)) // returns number 2

*

* math.exp([1, 2, 3])

* // returns Array [

* // 2.718281828459045,

* // 7.3890560989306495,

* // 20.085536923187668

* // ]

*

* See also:

*

* expm1, log, pow

*

* @param {number | BigNumber | Complex | Array | Matrix} x A number or matrix to exponentiate

* @return {number | BigNumber | Complex | Array | Matrix} Exponent of `x`

*/

return typed(name, {

number: expNumber,

Complex: function (x) {

return x.exp()

},

BigNumber: function (x) {

return x.exp()

},

'Array | Matrix': function (x) {

// TODO: exp(sparse) should return a dense matrix since exp(0)==1

return deepMap(x, this)

}

})

})