fabs vs abs in C++ Explained

The fabs function is used to calculate the absolute value of a floating-point number, while the abs function is used to calculate the absolute value of an integer. The result returned by the fabs function is a floating-point number, whereas the result returned by the abs function is an integer. The fabs function is declared in the cmath header file, while the abs function is declared in the cstdlib header file. The parameter for the fabs function can be of type float, double, or long double, while the parameter for the abs function can only be of integer type.