Ramped bit

Get the state (0 or 1) of the bit at the given index in a given value.

| Index | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | |-------|---|---|---|---|---|---|---|---| | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | | 128 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | | 'a' | 0 | 1 | 1 | 0 | 0 | 0 | 0 | 1 | | '1' | 0 | 0 | 1 | 1 | 0 | 0 | 0 | 1 |

If an invalid index or value is given, then 0 is returned.

Will not accept numbers over 255 or below 0.

Will accept a String of 1 or more characters, but only uses the first byte.

Install

To add as a dependency to a Node.js project:

npm i ramped.bit --save

Usage

bit = require('ramped.bit')

highest_bit = bit(1)
lowest_bit = bit(8)

highest_bit(128)
// 1

lowest_bit(128)
// 0

lowest_bit(1)
// 1

License

ISC