float precision

1. ScopeThe float and double ranges are determined by the number of digits of the index.The float index has eight digits, while the double index has 11 digits. The distribution is as follows:Float:1bit (symbol bit) 8 bits (index bit) 23 bits (tail

Single-precision floating-point numbers are 4 bytes (32bit) representing floating point numbersUses the IEEE754 standard computer floating-point number, in the interior is uses the binary system to representFor example: 7.22 with a 32-bit binary is

double and float are floating point types. Doubles (double type) are more accurate than float (single-precision) data and occupy more space. Double precision is twice times that of float, so a double is often used for more precise calculations.

Due to improper use of float or double, there may be an issue of loss of precision. The problem probably can be understood by the following code : [Java]View Plaincopyprint? Public class Floatdoubletest { Public static void Main (string[] args)

This article explains why the range of float is larger than int (same as 4 bytes), but some int is not correctly expressed by float (loss of precision)The precision problem of float and double in Java1. Background KnowledgeIn Java there is no detail,

The FLOAT type is used to indicate the approximate numeric data type. The SQL standard allows you to specify the precision (but not the exponential range) with bits in parentheses after the keyword FLOAT ). MySQL also supports optional

  In Java, the double Type format follows the IEEE 754 standard. Although decimal places are continuous in mathematics, double represents only some discrete points, and the set composed of these discrete points is counted as S. The size of S is

Package test1;public class Test2 {/*** @param args*/public static void Main (string[] args) {Float xx = 2.0f;Float yy = 1.8f;Float tt = XX-YY;System.out.println ("tttttt-----" + TT);}}Sure enough, the result is: TTTTTT-----0.20000005Again testing

IEEE754 the representation of floating-point numbers. The expression range of float type data in C language is -3.4*10^38~+3.4*10^38. Double is -1.7*10^-308~1.7*10^308,long double for -1.2*10^-4932~1.2*10^4932. Type Number of bits

In recent several posts, and QQ group discussion inside, I found that many users have encountered the problem is due to improper use of single-precision/double-precision values. So I want to talk about this topic specifically.Single-and