Package Exports

array-math

This package does not declare an exports field, so the exports above have been automatically detected and optimized by JSPM instead. If any package subpath is missing, it is recommended to post an issue to the original package (array-math) to support the "exports" field. If that is not possible, create a JSPM override to customize the exports field for this package.

Readme

array-math

$Build Status$

modularity

Sorry, I built this before I learned the truth about modularity. See the following links for enlightenment. ;-)

api

var aMath = require('array-math')

aMath.factors(n)

If you only want this function, try primefactors.

n must be a positive integer

aMath.factors(2)   // -> [2]
aMath.factors(96)  // -> [2, 2, 2, 2, 2, 3]
aMath.factors(100) // -> [2, 2, 5, 5]

aMath.divisors(n[, opts])

If you only want this function, you could factor it out, and send me a PR with a link to your module! (Grab the test file while you're at it.)

n must be a positive number.
opts is an object with the options. Defaults to {}.
- proper can be inside opts. If true, it will make the resulting array not include n. Defaults to false.

aMath.divisors(2)                  // -> [2]
aMath.divisors(96)                 // -> [1, 2, 3, 4, 6, 8, 12, 16, 24, 32, 48, 96]
aMath.divisors(100)                // -> [1, 2, 4, 5, 10, 20, 25, 50, 100]
aMath.divisors(100, {proper:true}) // -> [1, 2, 4, 5, 10, 20, 25, 50]

aMath.isPrime(n)

If you only want this function, try isprime.

n must be a positive integer

aMath.isPrime(2)   // -> true
aMath.isPrime(3)   // -> true
aMath.isPrime(4)   // -> false
aMath.isPrime(7)   // -> true
aMath.isPrime(96)  // -> false
aMath.isPrime(97)  // -> true
aMath.isPrime(100) // -> false
aMath.isPrime(113) // -> true
aMath.isPrime(117) // -> false

aMath.range([start,] stop [,step])

If you only want this function, try array-range. (Does not have stepping built in.)

start is the starting number of the range. Defaults to 0. If there are 2 or 3 arguments, this is assumed to be the first.
stop is the ending number of the range. Defaults to 0. If there is 1 argument, this is assumed to be it.
step is the step between each number. Defaults to 1. This is may not be 0, and is set to 1 if it is.

aMath.range()      // -> []
aMath.range(0)     // -> []
aMath.range(1)     // -> [0]
aMath.range(2)     // -> [0, 1]
aMath.range(2, 2)  // -> []
aMath.range(2, 3)  // -> [2]
aMath.range(3)     // -> [0, 1, 2]
aMath.range(10)    // -> [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]
aMath.range(2, 10) // -> [2, 3, 4, 5, 6, 7, 8, 9]
aMath.range(5, 10) // -> [5, 6, 7, 8, 9]

aMath.multiply(a)

If you only want this function, it might be best to just write it yourself:

arr.reduce(function (prdct, fctr) { return prdct * fctr }, 1)

a must be an array of numbers (integers, floats, negative, whatever).

aMath.multiply([2, 96, 100])         // -> 19200
aMath.multiply([40, 3, 17])          // -> 2040
aMath.multiply([4, 5, 2, 5.2, 3.8])  // -> 790.4
aMath.multiply([520, 0.2, 0.2, 0.8]) // -> 16.64

aMath.sum(a)

If you only want this function, it might be best to just write it yourself:

arr.reduce(function (sum, val) { return sum + val }, 0)

a must be an array of numbers (integers, floats, negative, whatever).

aMath.sum([2, 96, 100])  // -> 198
aMath.sum([2, -96, 100]) // -> 6
aMath.sum([45, 20, 8.3]) // -> 73.3

aMath.factorial(h[, l])

If you only want this function, try factorial. (Does not have low number built in.)

h must be a number. It is the high number. It defaults to 0.
l must be a number. It is the low number. It defaults to 0.
While multiplying, it will never multiply by 0.

aMath.factorial()      // -> 1
aMath.factorial(0)     // -> 1
aMath.factorial(1)     // -> 1
aMath.factorial(2)     // -> 2         (2x1)
aMath.factorial(3)     // -> 6         (3x2x1)
aMath.factorial(5)     // -> 120       (5x4x3x2x1)
aMath.factorial(5, 0)  // -> 120       (5x4x3x2x1)
aMath.factorial(5, 1)  // -> 120       (5x4x3x2x1)
aMath.factorial(5, 2)  // -> 120       (5x4x3x2)
aMath.factorial(5, 3)  // -> 60        (5x4x3)
aMath.factorial(5, 4)  // -> 20        (5x4)
aMath.factorial(10)    // -> 3628800   (10x9x8x7x6x5x4x3x2x1)
aMath.factorial(10, 3) // -> 1814400   (10x9x8x7x6x5x4x3)
aMath.factorial(10, 5) // -> 151200    (10x9x8x7x6x5)

install

Install with NPM

npm install array-math

license

VOL