The Linux Manuals (man pages) document is an important part of Linux documents. Linux Manuals are organized as several sections. Each section has a group of commands for a specific area in Linux usage, administration or development.
std::sin(std::valarray) – std::sin(std::valarray) Synopsis Defined in header<valarray> template <class T> valarray<T> sin(const valarray<T> &va); For each element in va computes sine of the value of the element. Parameters va – value array to apply the operation to Return value Value array containing sine of the values in va. Notes Unqualified function (sin) is used to…
std::sin(std::complex) – std::sin(std::complex) Synopsis Defined in header<complex> template <class T> complex<T> sin(const complex<T> &z); Computes complex sine of a complex value z. Parameters z – complex value Return value If no errors occur, the complex sine of z is returned. Errors and special cases are handled as if the operation is implemented by -i *…
std::signbit – std::signbit Synopsis Defined in header <cmath> bool signbit( float arg ); (1) (since C++11) bool signbit( double arg ); (2) (since C++11) bool signbit( long double arg ); (3) (since C++11) bool signbit( IntegralType arg ); (4) (since C++11) 1-3) Determines if the given floating point number arg is negative. 4) A set…
std::signal – std::signal Synopsis Defined in header<csignal> /*signal-handler*/ *signal(int sig, /*signal-handler*/ *handler); (1) extern "C" using /*signal-handler*/ = void(int); // exposition-only (2) Sets the handler for signal sig. The signal handler can be set so that default handling will occur, signal is ignored, or a user-defined function is called. When signal handler is set to…
std::sig_atomic_t – std::sig_atomic_t Synopsis Defined in header <csignal> typedef /* unspecified */ sig_atomic_t; An integer type which can be accessed as an atomic entity even in the presence of asynchronous interrupts made by signals. Notes Until C++11, which introduced std::atomic and std::atomic_signal_fence, about the only thing a strictly conforming program could do in a signal…
std::shuffle_order_engine<Engine,K>::shuffle_order_engine – std::shuffle_order_engine<Engine,K>::shuffle_order_engine Synopsis shuffle_order_engine(); (1) (since C++11) explicit shuffle_order_engine( result_type s ); (2) (since C++11) template< class Sseq > (3) (since C++11) explicit shuffle_order_engine( Sseq& seq ); explicit shuffle_order_engine( const Engine& e ); (4) (since C++11) explicit shuffle_order_engine( Engine&& e ); (5) (since C++11) Constructs new pseudo-random engine adaptor. 1) Default constructor. The underlying…
std::showpos,std::noshowpos – std::showpos,std::noshowpos Synopsis Defined in header <ios> std::ios_base& showpos( std::ios_base& str ); (1) std::ios_base& noshowpos( std::ios_base& str ); (2) Enables or disables the display of the plus sign ‘+’ in non-negative integer output. Has no effect on input. 1) enables the showpos flag in the stream str as if by calling str.setf(std::ios_base::showpos) 2) disables…
std::showpoint,std::noshowpoint – std::showpoint,std::noshowpoint Synopsis Defined in header <ios> std::ios_base& showpoint( std::ios_base& str ); (1) std::ios_base& noshowpoint( std::ios_base& str ); (2) Enables or disables the unconditional inclusion of the decimal point character in floating-point output. Has no effect on input. 1) enables the showpoint flag in the stream str as if by calling str.setf(std::ios_base::showpoint) 2) disables…
std::showbase,std::noshowbase – std::showbase,std::noshowbase Synopsis Defined in header <ios> std::ios_base& showbase( std::ios_base& str ); (1) std::ios_base& noshowbase( std::ios_base& str ); (2) 1) enables the showbase flag in the stream str as if by calling str.setf(std::ios_base::showbase) 2) disables the showbase flag in the stream str as if by calling str.unsetf(std::ios_base::showbase) This is an I/O manipulator, it may…
std::shift_left,std::shift_right – std::shift_left,std::shift_right Synopsis Defined in header <algorithm> template< class ForwardIt > constexpr ForwardIt shift_left( ForwardIt first, ForwardIt last, (1) (since C++20) typename std::iterator_traits<ForwardIt>::difference_type n ); template< class ExecutionPolicy, class ForwardIt > ForwardIt shift_left( ExecutionPolicy&& policy, ForwardIt first, ForwardIt last, (2) (since C++20) typename std::iterator_traits<ForwardIt>::difference_type n ); template< class ForwardIt > constexpr ForwardIt shift_right( ForwardIt…
std::shared_timed_mutex::unlock_shared – std::shared_timed_mutex::unlock_shared Synopsis void unlock_shared(); (since C++ 14) Releases the mutex from shared ownership by the calling thread. The mutex must be locked by the current thread of execution in shared mode, otherwise, the behavior is undefined. This operation synchronizes-with (as defined in std::memory_order) any subsequent lock() operation that obtains ownership of the same…
std::shared_timed_mutex::unlock – std::shared_timed_mutex::unlock Synopsis void unlock(); (since C++ 14) Unlocks the mutex. The mutex must be locked by the current thread of execution, otherwise, the behavior is undefined. This operation synchronizes-with (as defined in std::memory_order) any subsequent lock operation that obtains ownership of the same mutex. Parameters (none) Return value (none) Exceptions (none) Notes unlock()…
std::shared_timed_mutex::try_lock_until – std::shared_timed_mutex::try_lock_until Synopsis template <class Clock, class Duration> (since C++ 14) bool try_lock_until(const std::chrono::time_point<Clock, Duration> &timeout_time); Tries to lock the mutex. Blocks until specified timeout_time has been reached or the lock is acquired, whichever comes first. On successful lock acquisition returns true, otherwise returns false. If timeout_time has already passed, this function behaves like…
std::shared_timed_mutex::try_lock_shared_until – std::shared_timed_mutex::try_lock_shared_until Synopsis template <class Clock, class Duration> (since C++ 14) bool try_lock_shared_until(const std::chrono::time_point<Clock, Duration> &timeout_time); Tries to lock the mutex in shared mode. Blocks until specified timeout_time has been reached or the lock is acquired, whichever comes first. On successful lock acquisition returns true, otherwise returns false. If timeout_time has already passed, this…
std::shared_timed_mutex::try_lock_shared_for – std::shared_timed_mutex::try_lock_shared_for Synopsis template <class Rep, class Period> (since C++ 14) bool try_lock_shared_for(const std::chrono::duration<Rep, Period> &timeout_duration); Tries to lock the mutex in shared mode. Blocks until specified timeout_duration has elapsed or the shared lock is acquired, whichever comes first. On successful lock acquisition returns true, otherwise returns false. If timeout_duration is less or equal…
std::shared_timed_mutex::try_lock_shared – std::shared_timed_mutex::try_lock_shared Synopsis bool try_lock_shared(); (since C++14) Tries to lock the mutex in shared mode. Returns immediately. On successful lock acquisition returns true, otherwise returns false. This function is allowed to fail spuriously and return false even if the mutex is not currenly exclusively locked by any other thread. Prior unlock() operation on the…
std::shared_timed_mutex::try_lock_for – std::shared_timed_mutex::try_lock_for Synopsis template <class Rep, class Period> (since C++ 14) bool try_lock_for(const std::chrono::duration<Rep, Period> &timeout_duration); Tries to lock the mutex. Blocks until specified timeout_duration has elapsed or the lock is acquired, whichever comes first. On successful lock acquisition returns true, otherwise returns false. If timeout_duration is less or equal timeout_duration.zero(), the function behaves…
std::shared_timed_mutex::try_lock – std::shared_timed_mutex::try_lock Synopsis bool try_lock(); (since C++14) Tries to lock the mutex. Returns immediately. On successful lock acquisition returns true, otherwise returns false. This function is allowed to fail spuriously and return false even if the mutex is not currently locked by any other thread. If try_lock is called by a thread that already…
std::shared_timed_mutex::~shared_timed_mutex – std::shared_timed_mutex::~shared_timed_mutex Synopsis ~shared_timed_mutex(); Destroys the mutex. The behavior is undefined if the mutex is owned by any thread or if any thread terminates while holding any ownership of the mutex. See also
std::shared_timed_mutex::lock_shared – std::shared_timed_mutex::lock_shared Synopsis void lock_shared(); (since C++ 14) Acquires shared ownership of the mutex. If another thread is holding the mutex in exclusive ownership, a call to lock_shared will block execution until shared ownership can be acquired. If lock_shared is called by a thread that already owns the mutex in any mode (exclusive or…