#include #include #include int TestAlignment(int argc, char* argv[]) { void* ptr; size_t alignment; size_t offset; /* Alignment should be 2^N where N is a positive integer */ alignment = 16; offset = 5; /* _aligned_malloc */ ptr = _aligned_malloc(100, alignment); if (ptr == NULL) { printf("Error allocating aligned memory.\n"); return -1; } if (((size_t)ptr % alignment) != 0) { printf("This pointer, %p, is not aligned on %" PRIuz "\n", ptr, alignment); return -1; } /* _aligned_realloc */ ptr = _aligned_realloc(ptr, 200, alignment); if (((size_t)ptr % alignment) != 0) { printf("This pointer, %p, is not aligned on %" PRIuz "\n", ptr, alignment); return -1; } _aligned_free(ptr); /* _aligned_offset_malloc */ ptr = _aligned_offset_malloc(200, alignment, offset); if (ptr == NULL) { printf("Error reallocating aligned offset memory."); return -1; } if (((((size_t)ptr) + offset) % alignment) != 0) { printf("This pointer, %p, does not satisfy offset %" PRIuz " and alignment %" PRIuz "\n", ptr, offset, alignment); return -1; } /* _aligned_offset_realloc */ ptr = _aligned_offset_realloc(ptr, 200, alignment, offset); if (ptr == NULL) { printf("Error reallocating aligned offset memory."); return -1; } if (((((size_t)ptr) + offset) % alignment) != 0) { printf("This pointer, %p, does not satisfy offset %" PRIuz " and alignment %" PRIuz "\n", ptr, offset, alignment); return -1; } /* _aligned_free works for both _aligned_malloc and _aligned_offset_malloc. free() should not be * used. */ _aligned_free(ptr); return 0; }