fabs function is used to calculate the absolute value of a floating point number, that is, a non-negative value. The prototype of its function is: double fabs(double x). The parameter x is the target floating point number, and the return value is the absolute value of x, a non-negative floating point number.
The meaning of fabs in C
In C, fabs is a function used to calculate floating point numbers absolute value. Absolute value refers to the non-negative value of a number.
Function prototype:
double fabs(double x);
Parameters:
x
: To calculate the absolute value The target floating point number.Return value: The absolute value of
x
, a non-negative floating point number.Usage:
fabs function is mainly used to calculate the absolute value of floating point numbers. For example, suppose there is a floating point variablenum
with a value of -3.14. You can use the fabs function to calculate its absolute value:
double num = -3.14; double absolute_value = fabs(num); // absolute_value 的值为 3.14
In this example,absolute_value
Will contain the absolute value ofnum
, which is 3.14.
Note:
abs
function should be used.The above is the detailed content of What does fabs mean in c++. For more information, please follow other related articles on the PHP Chinese website!