---
name: "fwcscmp"
section: "3"
platform: "linux"
package: "libfstrcmp-dev"
version: "0.7.D001-5"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/fwcscmp"
---

# fwcscmp(3)

fuzzy comparison of two wide-character strings

## NAME

fwcscmp - fuzzy comparison of two wide-character strings

## SYNOPSIS

\#include \<fstrcmp.h\>

\#define FSTRCMP\_IDENTICAL\
 \#define FSTRCMP\_THRESHOLD\
 \#define FSTRCMP\_ERROR

double fwcscmp(const wchar\_t \*string1, const wchar\_t \*string2);

## DESCRIPTION

The **fwcscmp**() function compares the two wide-character strings, *string1* and *string2*.

## RETURN VALUE

The **fwcscmp** function returns a floating point value between 0.0 and FSTRCMP\_IDENTICAL.  A value of 0.0 means the two wide-character strings are utterly un-alike.  A value of FSTRCMP\_IDENTICAL means the two wide-character strings 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)](/malloc/3.md) failure.

## SEE ALSO

- [*fstrcmp*(3)](/fstrcmp/3.md)

  fuzzy comparison of two strings

- [*fwcscmpi*(3)](/fwcscmpi/3.md)

  fuzzy comparison of two wide-character strings

- [*wcscmp*(3)](/wcscmp/3.md)

  compare two wide-character strings

## COPYRIGHT

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