fmemcmp - fuzzy comparison of two memory areas

       fstrcmp version 0.7
       Copyright (C) 2009 Peter Miller
       Peter Miller <pmiller@opensource.org.au>

       The  comparison code is derived from the fuzzy comparison functions in GNU Gettext 0.17.  The GNU Gettext
       comparison functions were, in turn, derived from GNU Diff 2.7.

       Copyright (C) 1988-2009 Free Software Foundation

                                                                                                      fmemcmp(3)

       The  fmemcmp()  function compares the two memory areas, the size1 bytes pointed to by data1 and the size2
       bytes pointed to by data2.

       fmemcmp - fuzzy comparison of two memory areas

       The fmemcmp function returns a floating point value between 0.0 and FSTRCMP_IDENTICAL.  A  value  of  0.0
       means  the  memory  areas  are utterly un‐alike.  A value of FSTRCMP_IDENTICAL means the memory areas are
       identical.  A value of more than FSTRCMP_THRESHOLD (it lies between 0.0 and FSTRCMP_IDENTICAL)  would  be
       considered "similar" by most people.

       A value of FSTRCMP_ERROR (always negative) indicates a malloc(3) failure.

fmemcmpi(3)
               fuzzy comparison of two memory areas

       fstrcmp(3)
               fuzzy comparison of two strings

       memcmp(3)
               compare memory areas

       #include <fstrcmp.h>
       #define FSTRCMP_IDENTICAL
       #define FSTRCMP_THRESHOLD
       #define FSTRCMP_ERROR
       double fmemcmp(const void *data1, size_t size1, const void *data2, size_t size2);