rounding to first digit

The simple floating-point number types in Java float and double are not capable of operation. It's not just Java, it's also a problem in many other programming languages.What will we see if we compile and run the following program?public class Test {

Double display conversion int Static void Main (string [] args){Console. WriteLine ("5.1 ~ {0} ", (int) 5.1d );Console. WriteLine ("5.5 ~ {0} ", (int) 5.5d );Console. WriteLine ("5.8 ~ {0} ", (int) 5.8d );Console. WriteLine ("2.1 ~ {0} ", (int) 2.1d

Example of PHP rounding, rounding, and using the round function. Example of using the PHP rounding, rounding, and round functions, and rounding the round decimal places: PHP keeps two decimal places and rounds them to copy the code as follows: $ n0.1

PHP rounding, rounding, round function Use example, rounding round Decimal Example: PHP reserved two decimal places and rounded Copy the Code code as follows:$n = 0.1265489;Echo sprintf ("%.2f", $n); 0.13 As you can see, we used the sprintf

An integer method for rounding, rounding, ignoring decimals, etc. in one method PHP to take the integer function commonly used four methods, the following collection of four functions, often used to take the whole function, today a small sum!

Reprint Source: HTTP://BLOG.CSDN.NET/YF210YF Matlab takes the whole function: fix, floor, ceil, round. The rounding function is useful in programming. First, take the whole function 1. To 0 rounding (truncated rounding) fix-to 0 rounding (Round

One: You can choose to retain the number of digits, the comments are explained very detailed,Two: All

This article mainly introduces the PHP rounding, rounding, round function Use example, the need for friends can refer to the following Decimal Example: PHP reserved two decimal places and rounded Copy the Code code as follows: $n =0.1265489;echo

public class Mathtest {public static void Main (string[] args) { System.out.println ("The first digit after the decimal point =5");SYSTEM.OUT.PRINTLN ("Positive number: Math.Round (11.5) =" + Math.Round (11.5));SYSTEM.OUT.PRINTLN ("Negative number:

Javascript rounding method summary, javascript rounding The rounding function toFixed (n) in native javascript, where n is the number of decimal places to be retained. (0 Copy codeThe Code is as follows:Var num = 1.0999;Console. log (num. toFixed