43 #ifndef _GLIBCXX_MEMORY
44 #define _GLIBCXX_MEMORY 1
46 #pragma GCC system_header
69 #if __cplusplus >= 201103L
77 # include <bits/uses_allocator.h>
84 # if _GLIBCXX_USE_DEPRECATED
91 #if __cplusplus >= 201103L
93 # ifdef _GLIBCXX_USE_C99_STDINT_TR1
94 namespace std _GLIBCXX_VISIBILITY(default)
96 _GLIBCXX_BEGIN_NAMESPACE_VERSION
115 align(
size_t __align,
size_t __size,
void*& __ptr,
size_t& __space) noexcept
117 const auto __intptr =
reinterpret_cast<uintptr_t
>(__ptr);
118 const auto __aligned = (__intptr - 1u + __align) & -__align;
119 const auto __diff = __aligned - __intptr;
120 if ((__size + __diff) > __space)
125 return __ptr =
reinterpret_cast<void*
>(__aligned);
129 _GLIBCXX_END_NAMESPACE_VERSION
131 #endif // _GLIBCXX_USE_C99_STDINT_TR1
void * align(size_t __align, size_t __size, void *&__ptr, size_t &__space) noexcept
Fit aligned storage in buffer.