fmemcmpi man page
fmemcmpi — fuzzy comparison of two memory areas
int fmemcmpi(const void *data1, size_t size1, const void *data2, size_t size2);
The fmemcmpi() function compares the two memory areas, the size1 bytes pointed to by data1 and the size2 bytes pointed to by data2.
The fmemcmpi function returns an int value between 0 and FSTRCMPI_IDENTICAL. A value of 0 means the memory areas are utterly un‐alike. A value of FSTRCMPI_IDENTICAL means the memory areas are identical. A value of more than FSTRCMPI_THRESHOLD (it lies between 0.0 and FSTRCMP_IDENTICAL) would be considered "similar" by most people.
A value of FSTRCMPI_ERROR (always negative) indicates a malloc(3) failure.
fuzzy comparison of two memory areas
fuzzy comparison of two strings
compare memory areas
fstrcmp version 0.7
Copyright (C) 2009 Peter Miller
Peter Miller <firstname.lastname@example.org>
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