Standard library header <cstddef>
This header was originally in the C standard library as <stddef.h>.
This header is part of the utility library.
Macros |
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| implementation-defined null pointer constant (macro constant) |
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| byte offset from the beginning of a standard-layout type to specified member (function macro) |
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Types |
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unsigned integer type returned by the sizeof operator (typedef) |
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| signed integer type returned when subtracting two pointers (typedef) |
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(C++11) | the type of the null pointer literal nullptr (typedef) |
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(C++11) | trivial type with alignment requirement as great as any other scalar type (typedef) |
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(C++17) | the byte type (enum) |
Functions |
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(C++17) | convert std::byte to integer (function template) |
Synopsis
namespace std {
using ptrdiff_t = /* see description */;
using size_t = /* see description */;
using max_align_t = /* see description */;
using nullptr_t = decltype(nullptr);
enum class byte : unsigned char {};
// byte type operations
template<class IntType>
constexpr byte& operator<<=(byte& b, IntType shift) noexcept;
template<class IntType>
constexpr byte operator<<(byte b, IntType shift) noexcept;
template<class IntType>
constexpr byte& operator>>=(byte& b, IntType shift) noexcept;
template<class IntType>
constexpr byte operator>>(byte b, IntType shift) noexcept;
constexpr byte& operator|=(byte& l, byte r) noexcept;
constexpr byte operator|(byte l, byte r) noexcept;
constexpr byte& operator&=(byte& l, byte r) noexcept;
constexpr byte operator&(byte l, byte r) noexcept;
constexpr byte& operator^=(byte& l, byte r) noexcept;
constexpr byte operator^(byte l, byte r) noexcept;
constexpr byte operator~(byte b) noexcept;
template<class IntType>
constexpr IntType to_integer(byte b) noexcept;
}
#define NULL /* see description */
#define offsetof(P, D) /* see description */
Notes
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NULLis also defined in the following headers: -
std::size_tis also defined in the following headers:
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