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::strtoul,std::strtoull – std::strtoul,std::strtoull Synopsis Defined in header <cstdlib> unsigned long strtoul( const char *str, char **str_end, int base ); unsigned long long strtoull( const char *str, char **str_end, int base ); (since C++11) Interprets an unsigned integer value in a byte string pointed to by str. Discards any whitespace characters (as identified by calling isspace())…
std::strtol,std::strtoll – std::strtol,std::strtoll Synopsis Defined in header <cstdlib> long strtol( const char *str, char **str_end, int base ); long long strtoll( const char *str, char **str_end, int base ); (since C++11) Interprets an integer value in a byte string pointed to by str. Discards any whitespace characters (as identified by calling isspace()) until the first…
std::strtok – std::strtok Synopsis Defined in header<cstring> char *strtok(char *str, const char *delim); Finds the next token in a null-terminated byte string pointed to by str. The separator characters are identified by null-terminated byte string pointed to by delim. This function is designed to be called multiple times to obtain successive tokens from the same…
std::strtoimax,std::strtoumax – std::strtoimax,std::strtoumax Synopsis Defined in header <cinttypes> std::intmax_t strtoimax( const char* nptr, char** endptr, int base ); (since C++11) std::uintmax_t strtoumax( const char* nptr, char** endptr, int base ); (since C++11) Interprets an integer value in a byte string pointed to by nptr. Discards any whitespace characters (as identified by calling isspace()) until the…
std::strtof,std::strtod,std::strtold – std::strtof,std::strtod,std::strtold Synopsis Defined in header <cstdlib> float strtof( const char* str, char** str_end ); (since C++11) double strtod( const char* str, char** str_end ); long double strtold( const char* str, char** str_end ); (since C++11) Interprets a floating point value in a byte string pointed to by str. Function discards any whitespace characters…
std::strstreambuf::underflow – std::strstreambuf::underflow Synopsis protected: virtual int_type underflow(); Reads the next character from the get area of the buffer. If the input sequence has a read position available (gptr() < egptr(), returns (unsigned char)(*gptr()). Otherwise, if pptr() is not null and pptr() > egptr() (there is a put area and it is located after the…
std::strstreambuf::~strstreambuf – std::strstreambuf::~strstreambuf Synopsis virtual ~strstreambuf(); Destroys a std::strstreambuf object. if the object is managing a dynamically-allocated buffer (the buffer state is "allocated") and if the object is not frozen, then deallocates the buffer using the deallocation function provided at construction or delete[] if none was provided. Parameters (none) Notes This destructor is typically called…
std::strstreambuf::str – std::strstreambuf::str Synopsis char *str() const; Calls freeze(), then returns a copy of start pointer of the get area, std::streambuf::eback(). The start of the get area, for all writeable std::strstreambuf objects constructed through the interface provided by std::strstream, is also the start of the put area. Parameters (none) Return value A copy of eback(),…
std::strstreambuf::setbuf – std::strstreambuf::setbuf Synopsis protected: virtual streambuf<char> *setbuf(char *s, std::streamsize n); If s is a null pointer and n is zero, this function has no effect. Otherwise, the effect is implementation-defined: some implementations do nothing, while some implementations deallocate the dynamic member array used as the buffer and begin using the user-supplied character array of…
std::strstreambuf::seekpos – std::strstreambuf::seekpos Synopsis protected: virtual pos_type seekpos(pos_type sp, std::ios_base::openmode which = std::ios_base::in | std::ios_base::out ); Repositions std::basic_streambuf::gptr and/or std::basic_streambuf::pptr, if possible, to the position indicated by sp If std::ios_base::in is set in which, attempts to reposition gptr() (the next pointer in the get area). If std::ios_base::out is set in which, attempts to reposition pptr()…
std::strstreambuf::seekoff – std::strstreambuf::seekoff Synopsis protected: virtual pos_type seekoff(off_type off, ios_base::seekdir way, ios_base::openmode which = ios_base::in | ios_base::out); Repositions std::basic_streambuf::gptr and/or std::basic_streambuf::pptr, if possible, to the position that corresponds to exactly off characters from beginning, end, or current position of the get and/or put area of the buffer. * If which includes ios_base::in and this buffer…
std::strstreambuf::pcount – std::strstreambuf::pcount Synopsis int pcount() const; Returns the number of characters written to the output sequence. If the next pointer for the put area (std::streambuf::pptr()) is a null pointer, returns zero. Otherwise, returns the next pointer in the put area minus the beginning pointer in the put area, that is pptr() – pbase() Parameters…
std::strstreambuf::pbackfail – std::strstreambuf::pbackfail Synopsis protected: virtual int_type pbackfail( int_type c = EOF ); This protected virtual function is called by the public functions basic_streambuf::sungetc and basic_streambuf::sputbackc (which, in turn, are called by basic_istream::unget and basic_istream::putback). 1) The caller is requesting that the get area is backed up by one character (pbackfail() is called with no…
std::strstreambuf::overflow – std::strstreambuf::overflow Synopsis protected: virtual int_type overflow(int_type c = EOF); Appends the character c to the put area of the buffer, reallocating if possible. 1) If c==EOF, does nothing 2) Otherwise, if the put area has a write position available (pptr() < epptr()), stores the character as if by *pptr()++ = c 3) Otherwise,…
std::strstreambuf::freeze – std::strstreambuf::freeze Synopsis void freeze(bool freezefl = true); If the buffer uses dynamic allocation, sets the frozen status of the stream to freezefl. While the stream is frozen, overflow() will not reallocate the buffer and the destructor will not deallocate the buffer (thereby causing a memory leak). Parameters freezefl – new value to set…
std::strstreambuf – std::strstreambuf Synopsis Defined in header <strstream> class strstreambuf : public std::basic_streambuf<char> (deprecated in C++98) std::strstreambuf is a std::basic_streambuf whose associated character sequence is a character array, which may be constant (e.g. a string literal), modifyable but not dynamic (e.g. a stack-allocated array), or dynamic, in which case the std::strstreambuf may be allowed to…
std::strstream::~strstream – std::strstream::~strstream Synopsis virtual ~strstream(); Destroys a std::strstream object, which also destroys the member std::strstreambuf, which may call the deallocation function if the underlying buffer was dynamically-allocated and not frozen. Parameters (none) Notes If str() was called on a dynamic strstream and freeze(false) was not called after that, this destructor leaks memory. Example //…
std::strstream::str – std::strstream::str Synopsis char *str(); Returns the pointer to the beginning of the buffer, after freezing it. Effectively calls rdbuf()->str() Notes Before a call to str() that uses the result as a C string, the stream buffer must be null-terminated. Regular output such as with stream << 1.2 does not store a null terminator,…
std::strstream::rdbuf – std::strstream::rdbuf Synopsis strstreambuf *rdbuf() const; Returns a pointer to the associated std::strstreambuf, casting away its constness (despite the const qualifier on the member function) Parameters (none) Return value Pointer to the associated std::strsteambuf, with constness cast away. Example // Run this code #include <strstream> int main() { const std::strstream buf; std::strstreambuf *ptr =…
std::strstream::pcount – std::strstream::pcount Synopsis int pcount() const; Returns the number of characters that were output in the put area of the associated std::strstreambuf. Effectively calls rdbuf()->pcount() Parameters (none) Return value The number of characters in the put area, or zero if nothing was output. Example // Run this code #include <strstream> #include <iostream> int main()…