memory.h

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#ifndef MUTT_MUTT_MEMORY_H
#define MUTT_MUTT_MEMORY_H
 
#if defined __has_include
# if __has_include(<stdcountof.h>)
#  include <stdcountof.h>
# endif
#endif
#include <stddef.h>
 
#undef MAX
#undef MIN
#undef CLAMP
#define MAX(a, b) (((a) < (b)) ? (b) : (a))
#define MIN(a, b) (((a) < (b)) ? (a) : (b))
#define CLAMP(val, lo, hi) MIN(hi, MAX(lo, val))
 
#undef ROUND_UP
#define ROUND_UP(NUM, STEP) ((((NUM) + (STEP) -1) / (STEP)) * (STEP))
 
#if !defined(countof)
# define countof(x)  (sizeof(x) / sizeof((x)[0]))
#endif
 
#if !defined(typeas)
# define typeas(T)  __typeof__(*(__typeof__(T) *){_Generic(0, T: NULL, default: NULL)})
#endif
 
#define RVALUE(lv)  ((void)0, (lv))
 
#define MUTT_MEM_CALLOC(n, T)                                         \
(                                                                     \
  RVALUE((typeas(T) *){mutt_mem_calloc(n, sizeof(T))})                \
)
 
#define MUTT_MEM_MALLOC(n, T)                                         \
(                                                                     \
  RVALUE((typeas(T) *){mutt_mem_mallocarray(n, sizeof(T))})           \
)
 
#define MUTT_MEM_REALLOC(pptr, n, T)                                  \
(                                                                     \
  _Generic(*(pptr), typeas(T) *: (void)0),                            \
  mutt_mem_reallocarray(pptr, n, sizeof(T))                           \
)
 
void *mutt_mem_calloc(size_t nmemb, size_t size);
void  mutt_mem_free(void *ptr);
void *mutt_mem_malloc(size_t size);
void *mutt_mem_mallocarray(size_t nmemb, size_t size);
void  mutt_mem_realloc(void *pptr, size_t size);
void  mutt_mem_reallocarray(void *pptr, size_t nmemb, size_t size);

#define FREE(x) mutt_mem_free(x)
 
#endif /* MUTT_MUTT_MEMORY_H */