std::fgets – std::fgets Synopsis Defined in header<cstdio> char *fgets(char *str, int count, std::FILE *stream); Reads at most count – 1 characters from the given file stream and stores them in the character array pointed to by str. Reading stops if end-of-file occurs or a newline character is found, in which case str will contain that…
std::fgetpos – std::fgetpos Synopsis Defined in header<cstdio> int fgetpos(std::FILE *stream, std::fpos_t *pos); Obtains the file position indicator and the current parse state (if any) for the file stream stream and stores them in the object pointed to by pos. The value stored is only meaningful as the input to std::fsetpos. Parameters stream – file stream…
std::fgetc,std::getc – std::fgetc,std::getc Synopsis Defined in header<cstdio> int fgetc(std::FILE *stream); int getc(std::FILE *stream); Reads the next character from the given input stream. Parameters stream – to read the character from Return value The obtained character on success or EOF on failure. If the failure has been caused by end of file condition, additionally sets the…
std::fflush – std::fflush Synopsis Defined in header<cstdio> int fflush(std::FILE *stream); For output streams (and for update streams on which the last operation was output), writes any unwritten data from the stream’s buffer to the associated output device. For input streams (and for update streams on which the last operation was input), the behavior is undefined….
std::feupdateenv – std::feupdateenv Synopsis Defined in header <cfenv> int feupdateenv( const std::fenv_t* envp ) (since C++11) First, remembers the currently raised floating-point exceptions, then restores the floating-point environment from the object pointed to by envp (similar to std::fesetenv), then raises the floating-point exceptions that were saved. This function may be used to end the non-stop…
std::fetestexcept – std::fetestexcept Synopsis Defined in header <cfenv> int fetestexcept( int excepts ); (since C++11) Determines which of the specified subset of the floating point exceptions are currently set. The argument excepts is a bitwise OR of the floating_point_exception_macros. Parameters excepts – bitmask listing the exception flags to test Return value Bitwise OR of the…
std::ferror – std::ferror Synopsis Defined in header<cstdio> int ferror(std::FILE *stream); Checks the given stream for errors. Parameters stream – the file stream to check Return value Nonzero value if the file stream has errors occurred, 0 otherwise Example // Run this code #include <cstdio> #include <cstdlib> #include <clocale> #include <cwchar> int main(void) { const char…
std::feraiseexcept – std::feraiseexcept Synopsis Defined in header <cfenv> int feraiseexcept( int excepts ); (since C++11) Attempts to raise all floating point exceptions listed in excepts (a bitwise OR of the floating_point_exception_macros). If one of the exceptions is FE_OVERFLOW or FE_UNDERFLOW, this function may additionally raise FE_INEXACT. The order in which the exceptions are raised is…
std::feof – std::feof Synopsis Defined in header<cstdio> int feof(std::FILE *stream); Checks if the end of the given file stream has been reached. Parameters stream – the file stream to check Return value Nonzero value if the end of the stream has been reached, otherwise 0. Notes This function only reports the stream state as reported…
std::feholdexcept – std::feholdexcept Synopsis Defined in header <cfenv> int feholdexcept( std::fenv_t* envp ) (since C++11) First, saves the current floating-point environment to the object pointed to by envp (similar to std::fegetenv), then clears all floating-point status flags, and then installs the non-stop mode: future floating-point exceptions will not interrupt execution (will not trap), until the…
std::fegetround,std::fesetround – std::fegetround,std::fesetround Synopsis Defined in header <cfenv> int fesetround( int round ) (1) (since C++11) int fegetround() (2) (since C++11) Manages the floating-point rounding direction. 1) Attempts to establish the floating-point rounding direction equal to the argument round, which is expected to be one of the floating_point_rounding_macros. 2) Returns the value of the floating_point_rounding_macro…
std::fegetexceptflag,std::fesetexceptflag – std::fegetexceptflag,std::fesetexceptflag Synopsis Defined in header <cfenv> int fegetexceptflag( std::fexcept_t* flagp, int excepts ); (1) (since C++11) int fesetexceptflag( const std::fexcept_t* flagp, int excepts ); (2) (since C++11) 1) Attempts to obtain the full contents of the floating-point exception flags that are listed in the bitmask argument excepts, which is a bitwise OR of…
std::fegetenv,std::fesetenv – std::fegetenv,std::fesetenv Synopsis Defined in header <cfenv> int fegetenv( std::fenv_t* envp ) (1) (since C++11) int fesetenv( const std::fenv_t* envp ); (2) (since C++11) Manages the status of the floating-point environment. 1) Attempts to store the status of the floating-point environment in the object pointed to by envp. 2) Attempts to establish the floating-point…
std::feclearexcept – std::feclearexcept Synopsis Defined in header <cfenv> int feclearexcept( int excepts ); (since C++11) Attempts to clear the floating-point exceptions that are listed in the bitmask argument excepts, which is a bitwise OR of the floating_point_exception_macros. Parameters excepts – bitmask listing the exception flags to clear Return value 0 if all indicated exceptions were…
std::fdim,std::fdimf,std::fdiml – std::fdim,std::fdimf,std::fdiml Synopsis Defined in header <cmath> float fdim ( float x, float y ); (1) (since C++11) float fdimf( float x, float y ); double fdim ( double x, double y ); (2) (since C++11) long double fdim ( long double x, long double y ); (3) (since C++11) long double fdiml( long…
std::fclose – std::fclose Synopsis Defined in header<cstdio> int fclose(std::FILE *stream); Closes the given file stream. Any unwritten buffered data are flushed to the OS. Any unread buffered data are discarded. Whether or not the operation succeeds, the stream is no longer associated with a file, and the buffer allocated by std::setbuf or std::setvbuf, if any,…
std::extreme_value_distribution< _RealType >::param_type – Synopsis Public Types typedef extreme_value_distribution < _RealType > distribution_type" Public Member Functions param_type (_RealType __a=_RealType(0), _RealType __b=_RealType(1)) _RealType a () const _RealType b () const Friends bool operator== (const param_type &__p1, const param_type &__p2) Detailed Description template<typename _RealType = double>struct std::extreme_value_distribution< _RealType >::param_type Parameter type. Definition at line 5060 of file…
std::extreme_value_distribution<RealType>::reset – std::extreme_value_distribution<RealType>::reset Synopsis void reset(); (since C++ 11) Resets the internal state of the distribution object. After a call to this function, the next call to operator() on the distribution object will not be dependent on previous calls to operator(). Parameters (none) Return value (none) Complexity Constant.
std::extreme_value_distribution<RealType>::param – std::extreme_value_distribution<RealType>::param Synopsis param_type param() const; (1) (since C++11) void param( const param_type& params ); (2) (since C++11) Manages the associated distribution parameter set. 1) Returns the associated parameter set. 2) Sets the associated parameter set to params Parameters params – new contents of the associated parameter set Return value 1) The associated parameter…
std::extreme_value_distribution<RealType>::operator() – std::extreme_value_distribution<RealType>::operator() Synopsis template <class Generator> (1)(since C++ 11) result_type operator()(Generator &g); template <class Generator> (2)(since C++ 11) result_type operator()(Generator &g, const param_type ¶ms); Generates random numbers that are distributed according to the associated probability function. The entropy is acquired by calling g.operator(). The first version uses the associated parameter set, the second version…