ES2017 Math Extensions
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README.md

Math Extensions Proposal

Champion

Rick Waldron

Status

This proposal is currently stage 1 of the TC39 process.

Motivation

These functions exist in many, many JS libraries either hand rolled or via many modules on npm. Providing them as built-ins serves to pave cow path. Implementations and naming is inconsistent. Several other languages offer these as built-ins.

Java

Python

Racket

Rust

Questions

  • Math.map
    • Is it...
      • Math.scale <-- this
      • Math.map
      • Math.remap
    • Should there be a corresponding Math.fmap? (ie. https://tc39.github.io/ecma262/#sec-math.fround, Step 3 & 4 convert result to IEEE 754-2008 binary32 (using roundTiesToEven), then to IEEE 754-2008 binary64).
  • Math.constrain
    • Is it...
      • Math.constrain
      • Math.clamp