public BigDecimal(String val, MathContext mc) 若mc的precision大于0, private void roundThis(MathContext mc) { BigDecimal rounded = doRound(this, mc);//根据mc计算新的BigDecimal if (rounded == this) // wasn't rounded return; this.intVal = rounded.intVal; this.intCompact = rounded.intCompact...
add(decimal2); BigDecimal difference = decimal1.subtract(decimal2); BigDecimal product = decimal1.multiply(decimal2); BigDecimal quotient = decimal1.divide(decimal2, BigDecimal.ROUND_HALF_UP); System.out.println("Sum: " + sum); System.out.println("Difference: " + difference); System.out.pri...
TheBigDecimal.setScale()method takes two arguments. The first isscalei.e. number of places to round off. The second is the rounding mode. Different rounding modes can give different results so test them out before finalizing. Thejava.math.RoundingMode.HALF_EVENis the recommended mode in most ...
https://stackoverflow.com/questions/1329426/how-do-i-round-to-the-nearest-0-5 https://stackoverflow.com/questions/6137986/javascript-roundoff-number-to-nearest-0-5 更新: 2020-03-15 200 - 15% = 200 x (1 - 15 / 100) or 200 - (200 * 15 / 100) 200 + 15% = 200 x (1 + 15...
compute (d*10^k) * 10^(e-k) with just one roundoff. 3. Rather than a bit-at-a-time adjustment of the binary result in the hard case, we use floating-point arithmetic to determine the adjustment to within one bit; only in really hard cases do we need to ...
Passing in a negative argument for digits to round off to returns the nearest multiple of power of 10. If the magnitude of the argument is larger than or equal to the number of digits in the integral part of the number to round,zerois returned. ...
//package com.java2s; //License from project: LGPL import java.math.BigDecimal; public class Main { public static BigDecimal round(BigDecimal decimal) { return new BigDecimal(Math.round(decimal.doubleValue())); }/*from w w w .ja v a2 s . c o m*/ public static BigDecimal round(...
Users can round a number to a maximum of 2 decimal places using five different methods in JavaScript. These are using .toFixed() method, Math.round() and parseFloat() functions and double rounding (.toPrecision()) and custom function.
2.1.1806 Part 4 Section 19.1.2.17, roundrect (Rounded Rectangle) 2.1.1807 Part 4 Section 19.1.2.18, shadow (Shadow Effect) 2.1.1808 Part 4 Section 19.1.2.19, shape (Shape Definition) 2.1.1809 Part 4 Section 19.1.2.20, shapetype (Shape Template) 2.1.1810 Part 4 Section 19.1.2.21...
Use Double Rounding to Round a Number To 2 Decimal Places in JavaScriptIn this method, we use the .toPrecision() method to strip off the floating-point rounding errors introduced during the intermediate calculations in single rounding.function round(num) { var m = Number((Math.abs(num) * ...