matrix.onchain.js
A micro JS library (349 bytes) for matrix operations.
This library is intended for use in environments where the available storage space is very limited; like blockchains for example. Everything is stripped down to the bare essentials.
Usage
Operating on matrices
Perform add, subtract, multiply and divide opterations on two given matrices. For example:
let a = [
[1, 2, 3],
[0, 1, 0]
]
let b = [
[0, 0, 1],
[1, 1, 1]
]
Matrix.add(a, b)
// => [
// [1, 2, 4],
// [1, 2, 1]
// ]
You also can pass a number value as the second argument to perform uniform
operations:
let a = [
[1, 2, 3],
[0, 1, 0]
]
Matrix.mpy(a, 2)
// => [
// [2, 4, 6],
// [0, 2, 0]
// ]
The following methods are available:
Matrix.add(a, b)Matrix.sub(a, b)Matrix.mpy(a, b)Matrix.div(a, b)
Custom matrix operations
Perform any other operation on two matrices with equal dimensions.
For example, If you’d want to to a modulo operation:
Matrix.op(a, b, (x, y) => x % y)
Of course, this also works with uniform operations:
Matrix.op(a, 2, (x, y) => x % y)
Creating new matrices
With the fill method, a new matrix can be created with a given number of rows
and columns:
Matrix.fill(4, 3)
// => [
// [0, 0, 0, 0],
// [0, 0, 0, 0],
// [0, 0, 0, 0]
// ]
Optionally, an initial value can be passed as the third argument:
Matrix.fill(4, 3, 2)
// => [
// [2, 2, 2, 2],
// [2, 2, 2, 2],
// [2, 2, 2, 2]
// ]
License
matrix.onchain.js is licensed under the terms of the MIT License.
