frexp for integers: decomposes integer into coefficient and power of 2
npm install intexpfrexp for integersSimilarly to the libc frexp function, this decomposes a given integer value x into an integer coefficient c and an integral power of two n such thatc * 2n = x
ldexp is also provided as an inverse function for convenience.
#### intexp(integer)
Returns [coefficient, exponent]
e.g.
``javascript
const {intexp} = require('intexp');
const decomposed = intexp(4864) // [19, 8]
`
#### ldexp(coefficient, exponent)`
Returns integer given coefficient and exponent.
e.g.javascript
const {ldexp} = require('intexp');
const int = ldexp(19, 8) // 4864
``