Linux Manuals

std::istreambuf_iterator<CharT,Traits>::operator++,operator++(int) – std::istreambuf_iterator<CharT,Traits>::operator++,operator++(int) Synopsis istreambuf_iterator& operator++(); (1) /* proxy */ operator++(int); (2) Advances the iterator by calling sbuf_->sbumpc() where sbuf_ is the stored pointer to the stream buffer. The behavior is undefined if the iterator is end-of-stream iterator. Parameters (none) Return value 1) *this. 2) A proxy object holding the current character obtained via operator*()…

std::istream_iterator<T,CharT,Traits,Distance>::~istream_iterator – std::istream_iterator<T,CharT,Traits,Distance>::~istream_iterator Synopsis ~istream_iterator() = default; 1) Destroys the iterator, including the cached value. If T is a literal type, then this destructor is a trivial destructor (since C++11)                                                                                               (until C++17) If std::is_trivially_destructible_v<T> is true, then this destructor is a trivial destructor. (since C++17)

std::basic_istream – std::basic_istream Synopsis Defined in header <istream> template< class CharT, class Traits = std::char_traits<CharT> > class basic_istream : virtual public std::basic_ios<CharT, Traits> The class template basic_istream provides support for high level input operations on character streams. The supported operations include formatted input (e.g. integer values or whitespace-separated characters and characters strings) and unformatted input…

std::isspace – std::isspace Synopsis Defined in header<cctype> int isspace(int ch); Checks if the given character is whitespace character as classified by the currently installed C locale. In the default locale, the whitespace characters are the following: * space (0x20, ‘ ‘) * form feed (0x0c, ‘\f’) * line feed (0x0a, ‘\n’) * carriage return (0x0d,…

std::isspace(std::locale) – std::isspace(std::locale) Synopsis Defined in header<locale> template <class charT> bool isspace(charT ch, const locale &loc); Checks if the given character is classified as a whitespace character by the given locale’s ctype facet. Parameters ch – character loc – locale Return value Returns true if the character is classified as a whitespace character, false otherwise….

std::ispunct – std::ispunct Synopsis Defined in header<cctype> int ispunct(int ch); Checks if the given character is a punctuation character as classified by the current C locale. The default C locale classifies the characters !"#$%&'()*+,-./:;<=>?@[\]^_`{|}~ as punctuation. The behavior is undefined if the value of ch is not representable as unsigned char and is not equal…

std::ispunct(std::locale) – std::ispunct(std::locale) Synopsis Defined in header<locale> template <class charT> bool ispunct(charT ch, const locale &loc); Checks if the given character is classified as an punctuation character by the given locale’s std::ctype facet. Parameters ch – character loc – locale Return value Returns true if the character is classified as punctuation, false otherwise. Possible implementation…

std::isprint – std::isprint Synopsis Defined in header<cctype> int isprint(int ch); Checks if ch is a printable character as classified by the currently installed C locale. In the default, "C" locale, the following characters are printable: * digits (0123456789) * uppercase letters (ABCDEFGHIJKLMNOPQRSTUVWXYZ) * lowercase letters (abcdefghijklmnopqrstuvwxyz) * punctuation characters (!"#$%&'()*+,-./:;<=>?@[\]^_`{|}~) * space () The behavior…

std::isprint(std::locale) – std::isprint(std::locale) Synopsis Defined in header<locale> template <class charT> bool isprint(charT ch, const locale &loc); Checks if the given character classified as a printable character (including space) by the given locale’s std::ctype facet. Parameters ch – character loc – locale Return value Returns true if the character is classified as printable, false otherwise. Possible…

std::ispow2 – std::ispow2 Synopsis Defined in header <bit> template< class T > (since C++20) constexpr bool ispow2(T x) noexcept; Checks if x is an integral power of two. This overload only participates in overload resolution if T is an unsigned integer type (that is, unsigned char, unsigned short, unsigned int, unsigned long, unsigned long long,…

std::isnormal – std::isnormal Synopsis Defined in header <cmath> bool isnormal( float arg ); (1) (since C++11) bool isnormal( double arg ); (2) (since C++11) bool isnormal( long double arg ); (3) (since C++11) bool isnormal( IntegralType arg ); (4) (since C++11) 1-3) Determines if the given floating point number arg is normal, i.e. is neither…

std::isnan – std::isnan Synopsis Defined in header <cmath> bool isnan( float arg ); (1) (since C++11) bool isnan( double arg ); (2) (since C++11) bool isnan( long double arg ); (3) (since C++11) bool isnan( IntegralType arg ); (4) (since C++11) 1-3) Determines if the given floating point number arg is a not-a-number (NaN) value….

std::islower – std::islower Synopsis Defined in header<cctype> int islower(int ch); Checks if the given character is classified as a lowercase character according to the current C locale. In the default "C" locale, islower returns a nonzero value only for the lowercase letters (abcdefghijklmnopqrstuvwxyz). If islower returns a nonzero value, it is guaranteed that iscntrl, isdigit,…

std::islower(std::locale) – std::islower(std::locale) Synopsis Defined in header<locale> template <class charT> bool islower(charT ch, const locale &loc); Checks if the given character is classified as a lowercase alphabetic character by the given locale’s std::ctype facet. Parameters ch – character loc – locale Return value Returns true if the character is classified as lowercase, false otherwise. Possible…

std::islessgreater – std::islessgreater Synopsis Defined in header <cmath> bool islessgreater( float x, float y ); (1) (since C++11) bool islessgreater( double x, double y ); (2) (since C++11) bool islessgreater( long double x, long double y ); (3) (since C++11) bool islessgreater( Arithmetic x, Arithmetic y ); (4) (since C++11) 1-3) Determines if the floating…

std::islessequal – std::islessequal Synopsis Defined in header <cmath> bool islessequal( float x, float y ); (1) (since C++11) bool islessequal( double x, double y ); (2) (since C++11) bool islessequal( long double x, long double y ); (3) (since C++11) bool islessequal( Arithmetic x, Arithmetic y ); (4) (since C++11) 1-3) Determines if the floating…

std::isless – std::isless Synopsis Defined in header <cmath> bool isless( float x, float y ); (1) (since C++11) bool isless( double x, double y ); (2) (since C++11) bool isless( long double x, long double y ); (3) (since C++11) bool isless( Arithmetic x, Arithmetic y ); (4) (since C++11) 1-3) Determines if the floating…

std::isinf – std::isinf Synopsis Defined in header <cmath> bool isinf( float arg ); (1) (since C++11) bool isinf( double arg ); (2) (since C++11) bool isinf( long double arg ); (3) (since C++11) bool isinf( IntegralType arg ); (4) (since C++11) 1-3) Determines if the given floating point number arg is a positive or negative…

std::isgreaterequal – std::isgreaterequal Synopsis Defined in header <cmath> bool isgreaterequal( float x, float y ); (1) (since C++11) bool isgreaterequal( double x, double y ); (2) (since C++11) bool isgreaterequal( long double x, long double y ); (3) (since C++11) bool isgreaterequal( Arithmetic x, Arithmetic y ); (4) (since C++11) 1-3) Determines if the floating…

std::isgreater – std::isgreater Synopsis Defined in header <cmath> bool isgreater( float x, float y ); (1) (since C++11) bool isgreater( double x, double y ); (2) (since C++11) bool isgreater( long double x, long double y ); (3) (since C++11) bool isgreater( Arithmetic x, Arithmetic y ); (4) (since C++11) 1-3) Determines if the floating…