JavaScript math, round to two decimal places - Stack Overflow
This is the actual correct answer. I'd just add that for the specific discount scenario, the simplified code would be: var discount = Math.round(10000 * (1 - price / listprice)) / 100; @ChristopheRoussy, the example you provided is actually correct and this result is caused by the fact that base-2 floating point can't represent all base-10 decimals precisely.
How to round float numbers in javascript? - Stack Overflow
I need to round for example 6.688689 to 6.7, but it always shows me 7. My method: Math.round(6.688689); //or Math.round(6.688689, 1); //or Math.round(6.688689, 2); But result always is the same...
How do I round a number in JavaScript? - Stack Overflow
You can use Math.round() for rounding numbers to the nearest integer. Math.round(532.24) => 532 Also, you can use parseInt() and parseFloat() to cast a variable to a certain type, in this case integer and floating point.
java - Using Math.round to round to one decimal place? - Stack …
2014年3月5日 · The Math.round method returns a long (or an int if you pass in a float), and Java's integer division is the culprit. Cast it back to a double, or use a double literal when dividing by 10. Either: double total = (double) Math.round((num / sum * 100) * 10) / 10; or. double total = Math.round((num / sum * 100) * 10) / 10.0; Then you should get. 27.3
c# - Math.Round not keeping the trailing zero - Stack Overflow
2012年9月6日 · So if you do want tailing zeros, you can either use the string display functions to format it as others have answered, or make sure to pass in the original value as a decimal (causing to use internally Decimal.Math.Round which will deal only with decimals), and make sure to not cast the result to a double and also not to save it in a double ...
How do you round a number to two decimal places in C#?
2008年11月2日 · Simply Math.Round() solves this problem and fits the situation by passing a precision parameter and MidpointRounding parameter to the method. By default Math.Round uses MidpointRounding.ToEven which is actually bankers rounding meaning that the halfway numbers round to the nearest even number: 1.5 => 2 2.5 => 2 3.5 => 4 4.5 => 4 Let me make …
math - Powershell Round Up Function - Stack Overflow
2018年9月3日 · I would like to round up to two decimal places in Powershell. I start with the double "178.532033". If I use the Excel ROUNDUP function to two decimal places I get "178.54". =ROUNDUP(A1,2) Howev...
How to round to at most 2 decimal places, if necessary
It seems like Math.round is a better solution. But it is not! In some cases it will not round correctly: Math.round(1.005 * 100)/100 // Returns 1 instead of expected 1.01! toFixed() will also not round correctly in some cases (tested in Chrome v.55.0.2883.87)! Examples:
What is the algorithmic difference between math.ceil () and round ...
2018年2月10日 · However, math.ceil will always "round" up. I.e. the smallest integer greater than or equal to the input. Moreover, round and math.ceil differ greatly when executing on negative numbers. >>> math.ceil(-2.8) -2 >>> round(-2.8) -3
How do I round a double to two decimal places in Java?
Math.round is one answer, public class Util { public static Double formatDouble(Double valueToFormat) { long rounded = Math.round(valueToFormat*100); return rounded/100.0; } } Test in Spock,Groovy