number_precision

Description:

number precision

number_precision #
Perform addition, subtraction, multiplication and division operations precisely using dart
Why #
0.1 + 0.2 = 0.30000000000000004
1.0 - 0.9 = 0.09999999999999998
0.105.toStringAsFixed(2) = 0.1 // not 0.11
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Install #
dependencies:
number_precision: ^1.0.0+1
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Methods #
NP.strip(num) // strip a number to nearest right number
NP.plus(num1, num2, [num3, ...]) // addition, num + num2 + num3, two numbers is required at least.
NP.minus(num1, num2, [num3, ...]) // subtraction, num1 - num2 - num3
NP.times(num1, num2, [num3, ...]) // multiplication, num1 * num2 * num3
NP.divide(num1, num2, [num3, ...]) // division, num1 / num2 / num3
NP.round(num, ratio) // round a number based on ratio
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Usage #
Import the library
import 'package:number_precision/number_precision.dart';

NP.strip(0.09999999999999998); // = 0.1
NP.plus(0.1, 0.2); // = 0.3, not 0.30000000000000004
NP.plus(2.3, 2.4); // = 4.7, not 4.699999999999999
NP.minus(1.0, 0.9); // = 0.1, not 0.09999999999999998
NP.times(3, 0.3); // = 0.9, not 0.8999999999999999
NP.times(0.362, 100); // = 36.2, not 36.199999999999996
NP.divide(1.21, 1.1); // = 1.1, not 1.0999999999999999
NP.round(0.105, 2); // = 0.11, not 0.1
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License #
MIT