#include <tiffio.h>tdata_t _TIFFmalloc(tsize_t);tdata_t _TIFFrealloc(tdata_t, tsize_t);void _TIFFfree(tdata_t);void _TIFFmemset(tdata_t, int, tsize_t);void _TIFFmemcpy(tdata_t, const tdata_t, tsize_t);int _TIFFmemcmp(const tdata_t, const tdata_t, tsize_t);
_TIFFmalloc and _TIFFrealloc are used to dynamically allocate and reallocate memory used by libtiff; such as memory passed into the I/O routines. Memory allocated through these interfaces is released back to the system using the _TIFFfree routine.
Memory allocated through one of the above interfaces can be set to a known value using _TIFFmemset, copied to another memory location using _TIFFmemcpy, or compared for equality using _TIFFmemcmp. These routines conform to the equivalent ANSI C routines: memset, memcpy, and memcmp, repsectively.