How to implement Log base 2 in flutter?

Question

How can I find Log2(x) in flutter?

I didn't found the match function in flutter math package

Note:

Log base 2

Use the logarithm change of base formula. – jamesdlin Mar 20 '22 at 21:28 — jamesdlin, Mar 20 '22 at 21:28
https://en.wikipedia.org/wiki/Logarithm#Change_of_base – President James K. Polk Mar 20 '22 at 21:31 — President James K. Polk, Mar 20 '22 at 21:31

score 3 · Answer 1 · answered Mar 20 '22 at 21:34

3

As the others said, you can use the Logarithm change of base formula .

import 'dart:math';

double logBase(num x, num base) => log(x) / log(base);
double log2(num x) => logBase(x, 2);

answered Mar 20 '22 at 21:34

quoci

2,940
1
9
21

score 1 · Answer 2 · answered Oct 14 '22 at 20:02

As others mentioned, implementing log base X is a one-liner, but if you'd rather someone else write that one line, then take a look at the Dart Basic Utils package which has this implemented. Specifically, see the MathUtils section: https://github.com/Ephenodrom/Dart-Basic-Utils#mathutils

Disclaimer: I'm the one who contributed said functionality.

How to implement Log base 2 in flutter?

2 Answers2