calculate-asmd

calculate-asmd

The precise addition, subtraction, multiplication and division of JavaScript avoids the error of floating point calculation.

Production

0.2 + 0.4 = 0.6 ？

Install

yarn add calculate-asmd

or

npm install calculate-asmd --save

Usage

  import { add, sub, mul, div } from 'calculate-asmd'

  const addNum = add(0.2, 0.4);
  console.log("add(0.2, 0.4): ", addNum); //add(0.2, 0.4):  0.6
  const addNegative = add(0.2, -0.4);
  console.log("add(0.2, -0.4): ", addNegative); //add(0.2, -0.4):  -0.2

  const subNum = sub(0.2, 0.4);
  console.log("sub(0.2, 0.4): ", subNum);  //sub(0.2, 0.4):  -0.2
  const subNegative = sub(0.2, -0.4);
  console.log("sub(0.2, -0.4): ", subNegative); //sub(0.2, -0.4):  0.6

  const mulNum = mul(0.57, 100);
  console.log("mul(0.57, 100): ", mulNum); //mul(0.57, 100):  57
  const mulNegativ = mul(-0.57, 100);
  console.log("mul(-0.57, 100): ", mulNegativ); //mul(-0.57, 100):  -57

  const divNum = div(0.57, 100);
  console.log("div(0.57, 100): ", divNum); //div(0.57, 100):  0.0057
  const divNegative = div(-0.57, 100);
  console.log("div(-0.57, 100): ", divNegative);  //div(-0.57, 100):  -0.0057

asmd(arg1,arg2)

arg1: Default 0, type number/string

arg2: Default 0, type number/string

Tips: If arg is NaN, it will return NaN directly. If arg is null/undefined/"", arg will be treated as 0

div(arg1,arg2)

arg2: If arg2 is 0, it will return Infinity.

Expand

  import { scaleNum } from 'calculate-asmd'

  scaleNum(0.57, 2)   // 57
  scaleNum(0.57, -2) // 0.0057
  scaleNum(0.57, 0) // 0.57

Test

Test Document

LICENSE

MIT License