eagine/memory/null_ptr.hpp Source File

OGLplus (0.59.0) a C++ wrapper for rendering APIs

  
 #ifndef EAGINE_MEMORY_NULL_PTR_HPP
 #define EAGINE_MEMORY_NULL_PTR_HPP
  
 #include "../types.hpp"
 #include <cstdint>
  
 namespace eagine::memory {
 //------------------------------------------------------------------------------
 template <typename T>
 struct typed_nullptr_t {};
 //------------------------------------------------------------------------------
 template <typename T>
 constexpr typed_nullptr_t<T> typed_nullptr = {};
 //------------------------------------------------------------------------------
 template <typename T, typename N>
 static constexpr auto operator+(typed_nullptr_t<T>, N n) noexcept -> T* {
     return reinterpret_cast<T*>(std::uintptr_t(std_size(n) * sizeof(T)));
 }
 //------------------------------------------------------------------------------
 } // namespace eagine::memory
  
 #endif // EAGINE_MEMORY_NULL_PTR_HPP

eagine::memory::typed_nullptr_t

Class for doing pointer arithmetic on null pointers.

Definition: null_ptr.hpp:21

eagine::memory::typed_nullptr

constexpr typed_nullptr_t< T > typed_nullptr

Template constant for doing pointer arithmetic on null pointers.

Definition: null_ptr.hpp:26

eagine::operator+

static auto operator+(const fixed_size_string< N1 > &s1, const fixed_size_string< N2 > &s2) noexcept

Concatenation operator for fixed_size_string.

Definition: fixed_size_str.hpp:135

eagine::std_size

static constexpr auto std_size(T v) noexcept

Converts argument to std size type.

Definition: types.hpp:52