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| fmemcmp(3) | FreeBSD Library Functions Manual | fmemcmp(3) |
NAME
fmemcmp - fuzzy comparison of two memory areasSYNOPSIS
#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);
DESCRIPTION
The fmemcmp() function compares the two memory areas, the size1 bytes pointed to by data1 and the size2 bytes pointed to by data2.RETURN VALUE
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.
SEE ALSO
- fmemcmpi(3)
- fuzzy comparison of two memory areas
- fstrcmp(3)
- fuzzy comparison of two strings
- memcmp(3)
- compare memory areas
COPYRIGHT
fstrcmp version 0.7Copyright (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
Visit the GSP FreeBSD Man Page Interface.
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