Trailing zero / compareTo bug?

[markstreich]

Hi, using both nodejs and in the browser (firefox and chrome), I'm not getting the expected result for compareTo of 'equal' values, one with trailing zeros.

I thought compareTo ignored scale? Maybe I'm missing something though?

For now I'm adding .stripTrailingZeros() for each side of compareTo calls as a workaround.

Example:

var BD = require("bigdecimal");
var a=BD.BigDecimal('0.09');
var b=a.setScale(4);
console.log(a.compareTo(b)); // returns 1 (expected 0)

var a=BD.BigDecimal('0.091');
var b=BD.BigDecimal('0.0910000');
console.log(a.compareTo(b)); // returns 1 (expected 0)

[leehankyeol]

Wow I've just found this bug and it's... old.

[JasonGiedymin]

I think you want to compare tostring representations instead.

[leehankyeol]

@JasonGiedymin I decided to move on to big.js, which is well maintained by now.

[JasonGiedymin]

@leehankyeol ya your right, long time ago (you can search my projects) I moved to https://github.com/substack/node-bigint. This lib didn’t work for me. Can vouch that the lib I went to was validated against other bigint classes (I.e Java, also in my public projects).