osal_mem_align.h

Go to the documentation of this file.

#ifndef LEXLEO_OSAL_MEM_ALIGN_H
#define LEXLEO_OSAL_MEM_ALIGN_H
 
#include "policy/lexleo_cstd_types.h"
 
#if defined(__STDC_VERSION__) && __STDC_VERSION__ >= 201112L
    #include <stdalign.h>
    #define OSAL_ALIGNOF_MAX alignof(max_align_t)
    #define OSAL_ALIGNED_MAX _Alignas(max_align_t)
#else
    #if defined(_MSC_VER)
        #define OSAL_ALIGNOF_MAX 16
        #define OSAL_ALIGNED_MAX __declspec(align(16))
    #else
        #define OSAL_ALIGNOF_MAX 16
        #define OSAL_ALIGNED_MAX __attribute__((aligned(16)))
    #endif
#endif
 
/* Return the smallest multiple of `a` greater than or equal to `x`.
 * `a` must be a power of 2 (an alignment value).
 */
#ifndef OSAL_ALIGN_UP
    #define OSAL_ALIGN_UP(x, a) (((x) + (a) - 1) & ~((a) - 1))
#endif
 
#endif // LEXLEO_OSAL_MEM_ALIGN_H