fmemcmp man page

fmemcmp — fuzzy comparison of two memory areas

Synopsis

#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

Referenced By

fmemcmpi(3), fstrcasecmp(3), fstrcmp(1), fstrcmp(3), fstrcmpi(3).