PHP8 is the latest PHP language version, which introduces many exciting new features and improvements. One of them is the fdiv() function, which can be used to accurately calculate the division operation of floating point numbers.
In previous PHP versions, using the basic division operator (/) could cause precision issues. This is because when calculating floating point numbers, the computer needs to convert the number into binary format in order to perform the calculation. However, some numbers cannot be accurately represented as binary, which leads to some precision issues. For example, using the division operator to calculate the result of dividing 10 by 3 might result in 3.3333333333333 instead of exactly 3.3333333333333335.
The fdiv() function avoids these precision issues by using precise floating-point arithmetic as defined in the IEEE 754 standard. It can perform division operations without losing any precision and return an exact result. For example, using the fdiv(10, 3) function call, will return 3.3333333333333335, which is an exact result.
However, to use the fdiv() function correctly, you need to know a few tricks:
To sum up, the fdiv() function is a very useful tool that can help you avoid precision problems in floating point division operations. To use it correctly, you need to know the above tips and understand its limitations. If you need to perform high-precision floating point calculations, the fdiv() function may be one of your best choices.
The above is the detailed content of PHP8 function: Precision calculation skills of fdiv(). For more information, please follow other related articles on the PHP Chinese website!