FLAC__bool FLAC__memory_alloc_aligned_real_array(unsigned elements, FLAC__real **unaligned_pointer, FLAC__real **aligned_pointer) { FLAC__real *pu; /* unaligned pointer */ union { /* union needed to comply with C99 pointer aliasing rules */ FLAC__real *pa; /* aligned pointer */ void *pv; /* aligned pointer alias */ } u; FLAC__ASSERT(elements > 0); FLAC__ASSERT(0 != unaligned_pointer); FLAC__ASSERT(0 != aligned_pointer); FLAC__ASSERT(unaligned_pointer != aligned_pointer); pu = (FLAC__real*)FLAC__memory_alloc_aligned(sizeof(*pu) * elements, &u.pv); if(0 == pu) { return false; } else { if(*unaligned_pointer != 0) free(*unaligned_pointer); *unaligned_pointer = pu; *aligned_pointer = u.pa; return true; } }
FLAC__bool FLAC__memory_alloc_aligned_int32_array(unsigned elements, FLAC__int32 **unaligned_pointer, FLAC__int32 **aligned_pointer) { FLAC__int32 *pu; /* unaligned pointer */ union { /* union needed to comply with C99 pointer aliasing rules */ FLAC__int32 *pa; /* aligned pointer */ void *pv; /* aligned pointer alias */ } u; FLAC__ASSERT(elements > 0); FLAC__ASSERT(0 != unaligned_pointer); FLAC__ASSERT(0 != aligned_pointer); FLAC__ASSERT(unaligned_pointer != aligned_pointer); // if((size_t)elements > SIZE_MAX / sizeof(*pu)) /* overflow check */ // return false; pu = (FLAC__int32*)FLAC__memory_alloc_aligned(sizeof(*pu) * (size_t)elements, &u.pv); if(0 == pu) { return false; } else { if(*unaligned_pointer != 0) free(*unaligned_pointer); *unaligned_pointer = pu; *aligned_pointer = u.pa; return true; } }
FLAC__bool FLAC__memory_alloc_aligned_uint64_array(unsigned elements, FLAC__uint64 **unaligned_pointer, FLAC__uint64 **aligned_pointer) { FLAC__uint64 *pa, *pu; /* aligned pointer, unaligned pointer */ FLAC__ASSERT(elements > 0); FLAC__ASSERT(0 != unaligned_pointer); FLAC__ASSERT(0 != aligned_pointer); FLAC__ASSERT(unaligned_pointer != aligned_pointer); pu = (FLAC__uint64*)FLAC__memory_alloc_aligned(sizeof(FLAC__uint64) * elements, (void*)&pa); if(0 == pu) { return false; } else { if(*unaligned_pointer != 0) free(*unaligned_pointer); *unaligned_pointer = pu; *aligned_pointer = pa; return true; } }