foft v2.0.2

— foft —

Documentation

Syntactic sugar for discontinuous (mathematical) functions.

It Is

• A lot of syntactic sugar
• For investigating the results of known arithmetic expressions provided as functions in JavaScript over specified evaluation ranges,
• For investigating floating-point error tendencies in a JavaScript environment, and
• An ECMAScript module for browsers or nodejs.

It Is not

• Fast,
• A comprehensive calculator,
• Immune to inaccuracies,
• A computer algebra system,
• An equation solver, or
• An expression parser.

Usage:

Foft exports a single class, Foft that can create an instance as well as provide some static utilities.

Example:

import {Foft} from 'foftjs';
m = new Foft({
    terms: [t => 2*t],
    range: [0, 10],
    segmentDivisor: 10 // 10
});
[...m] // Array(11) [ 0, 2, 4, 6, 8, 10, 12, 14, 16, 18, 20 ] // 10+1

Generally, a Foft instance can evaluate:

1. Its terms: Function or Foft instances that should generally receive and return

• Numbers
• Arrays of Numbers,
• Nested Arrays of Numbers, or
• TypedArrays.

2. Some of the properties of its terms(1).

Development Guidelines

Testing

in nodejs

Run npm test

Documentation

Run npm run-script docs