---
name: "str_diffn"
section: "3"
platform: "linux"
package: "libowfat-dev"
version: "0.32-5"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/str_diffn"
---

# str\_diffn(3)

compare two ASCIIZ strings

## NAME

str\_diffn - compare two ASCIIZ strings

## SYNTAX

**#include \<libowfat/str.h\>**

int **str\_diffn**(const char\* *a*,const char\* *b*,size\_t *limit*);

## DESCRIPTION

**str\_diffn** returns negative, 0, or positive, depending on whether the string *a*\[0\], *a*\[1\], ..., *a*\[n\]=='\\0' is lexicographically smaller than, equal to, or greater than the string *b*\[0\], *b*\[1\], ..., *b*\[m-1\]=='\\0'.

If the strings are different, str\_diffn does not read bytes past the first difference.  The strings will be considered equal if the first *limit* characters match.

## SEE ALSO

[strlen(3)](/strlen/3.md)