sgs_Memory [function]

void sgs_Memory( sgs_Context* C, void* ptr, size_t size )

Allocates and frees memory, as specified in arguments.

• There are four possible cases that are handled by the function:
  • ptr != NULL, size != 0: ptr is reallocated with new size, keeping as much data as possible, new block of memory is returned;
  • ptr != NULL, size == 0: ptr is freed, NULL is returned;
  • ptr == NULL, size != 0: a new block of memory is allocated and returned;
  • ptr == NULL, size == 0: nothing is done, NULL is returned.