fmemcmp(3)

NAME
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