PHP's bcscale in TypeScript

How to use

Install via yarn add locutus and import: import { bcscale } from 'locutus/php/bc/bcscale'.

Or with CommonJS: const { bcscale } = require('locutus/php/bc/bcscale')

Use a bundler that supports tree-shaking so you only ship the functions you actually use. Vite, webpack, Rollup, and Parcel all handle this. For server-side use this is less of a concern.

Examples

These examples are extracted from test cases that automatically verify our functions against their native counterparts.

#codeexpected result
1bcscale(1)true

Dependencies

This function uses the following Locutus functions:

  • _bc (php/_helpers)

Here's what our current TypeScript equivalent to PHP's bcscale looks like. 

import { _bc } from '../_helpers/_bc.ts'

export function bcscale(scale: number | string): boolean {
  //  discuss at: https://locutus.io/php/bcscale/
  // original by: lmeyrick (https://sourceforge.net/projects/bcmath-js/)
  //   example 1: bcscale(1)
  //   returns 1: true

  const libbcmath = _bc()

  const parsedScale = Number.parseInt(String(scale), 10)
  if (Number.isNaN(parsedScale)) {
    return false
  }
  if (parsedScale < 0) {
    return false
  }
  libbcmath.scale = parsedScale

  return true
}

Improve this function

Locutus is a community effort following The McDonald's Theory: we ship first iterations, hoping others will improve them. If you see something that could be better, we'd love your contribution.

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