Defined in header <valarray> template< class T > valarray<T> abs( const valarray<T>& va ); Computes absolute value of each element in the value array. Parameters va - value array to apply the operation to Return value Value array containing absolute values of the values in va. Notes Unqualified function (abs) is used to perform the computation. If such function is not available, std::abs is used due to argument dependent lookup. The fu

Defined in header <complex> template< class T > T abs( const complex<T>& z ); Returns the magnitude of the complex number z. Parameters z - complex value Return value If no errors occur, returns the absolute value (also known as norm, modulus, or magnitude) of z. Errors and special cases are handled as if the function is implemented as std::hypot(std::real(z), std::imag(z)). Examples #include <iostream> #include <complex> in

Defined in header <cstdlib> int abs( int n ); long abs( long n ); long long abs( long long n ); (since C++11) long labs( long n ); long long llabs( long long n ); (since C++11) Defined in header <cinttypes> std::intmax_t abs( std::intmax_t n ); (since C++11) std::intmax_t imaxabs( std::intmax_t n ); (since C++11) Computes the absolute value of an integer number. The behavior is undefined if the result cannot

Defined in header <cmath> float abs( float arg ); (1) double abs( double arg ); (2) long double abs( long double arg ); (3) double abs( Integral arg ); (4) (since C++11) float fabs( float arg ); (5) double fabs( double arg ); (6) long double fabs( long double arg ); (7) double fabs( Integral arg ); (8) (since C++11) 1-3,5-7) Computes the absolute value of a floating point value arg. 4,8) A set of ov

Defined in header <cstdlib> void abort(); (until C++11) [[noreturn]] void abort(); (since C++11) Causes abnormal program termination unless SIGABRT is being caught by a signal handler passed to signal and the handler does not return. Destructors of variables with automatic, thread local and static storage durations are not called. Functions passed to std::atexit() are also not called. Whether open resources such as files are closed is implementation defi

Converts between types using a combination of implicit and user-defined conversions. Syntax static_cast < new_type > ( expression ) Returns a value of type new_type. Explanation Only the following conversions can be done with static_cast, except when such conversions would cast away constness or volatility. 1) If a temporary object of type new_type can be declared and initialized with expression, as by new_type Temp(expression);, which may involve implicit conversions, a ca

Usage static_cast type conversion expression: as the declaration of the expression

Usage static_assert declaration (since C++11)

Inside a class, declares members not bound to specific instances. Syntax static data_member (1) static member_function (2) 1) Declares a static data member. 2) Declares a static member function. Explanation Static members of a class are not associated with the objects of the class: they are independent objects with static storage duration or regular functions defined in namespace scope, only once in the program. The static keyword is only used with the declaration of a sta

Performs compile-time assertion checking. Syntax static_assert ( bool_constexpr , message ) (since C++11) static_assert ( bool_constexpr ) (since C++17) Explanation bool_constexpr - a constant expression that is contextually convertible to bool message - optional (since C++17)string literal that will appear as compiler error if bool_constexpr is false A static assert declaration may appear at block scope (as a block declaration) and inside a class body (as a m