=====fabs===== Syntax: #include double fabs( double arg ); The function fabs() returns the absolute value of arg. C++ also provides the following overloaded forms: #include float fabs( float arg ); // same as fabsf() in C99 long double fabs( long double arg ); // same as fabsl() in C99 You can also use abs() instead of fabs() in C++, as it contains overloaded versions for it. Related Topics: [[abs]], [[fmod]], [[labs]]