Package Exports
- double-double
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 (double-double) to support the "exports" field. If that is not possible, create a JSPM override to customize the exports field for this package.
Readme
Pure double & double-double floating point arithmetic functions with strict error bounds
Overview
- Double-double precision floating point operators (similar to quad precision)
- Optimized for speed (see benchmark below)
- Operators include: +, -, *, /, √, abs, <, >, ===, etc.
- No classes ⇒ a double-double is simply a length 2
Numberarray, e.g.
import { twoSum } from 'double-double';
// Specified directly (low order double first)
const a = [-4.357806199228875e-10, 11_638_607.274152497];
// ...or more usually from an earlier calculation
const b = twoSum(213.456, 111.111); // => [-1.4210854715202004e-14, 324.567] (completely error-free)- All functions are pure, e.g.
// using `a` and `b` as defined above (ddAddDd => double-double + double-double)
const c = ddAddDd(a,b); // => [-2.42072459299969e-10, 11638931.841152497]Research
The following research / books / lectures have been used or are directly relevant to this library (especially the first two):
- Mioara Joldes, Jean-Michel Muller, Valentina Popescu, Tight and rigourous error bounds for basic building blocks of double-word arithmetic
- T. J. Dekker, A Floating-Point Technique for Extending the Available Precision
- Yozo Hida, Xiaoye S. Li, David H. Bailey, Library for Double-Double and Quad-Double Arithmetic
- Nicholas J. Higham, Accuracy and Stability of Numerical Algorithms
Benchmark
Documentation
Introduction
Examples
import { toScaleAxis } from 'flo-mat';Installation
npm install double-doubleUsage
....
License
MIT