---
name: "gnutls_memcmp"
section: "3"
platform: "linux"
package: "gnutls"
version: "3.8.13-3"
release: "Arch Linux 2026-11-01"
platforms: ["linux"]
url: "https://new.carta.tech/gnutls_memcmp"
---

# gnutls\_memcmp(3)

API function

## NAME

gnutls\_memcmp - API function

## SYNOPSIS

**#include \<gnutls/gnutls.h\>**

**int gnutls\_memcmp(const void \*** *s1***, const void \*** *s2***, size\_t** *n***);**

## ARGUMENTS

- const void \* s1

  the first address to compare

- const void \* s2

  the second address to compare

- size\_t n

  the size of memory to compare

## DESCRIPTION

This function will operate similarly to **memcmp()**, but will operate on time that depends only on the size of the string. That is will not return early if the strings don't match on the first byte.

## RETURNS

non zero on difference and zero if the buffers are identical.

## SINCE

3\.4.0

## REPORTING BUGS

Report bugs to \<bugs@gnutls.org\>.\
 Home page: https://www.gnutls.org

## COPYRIGHT

Copyright © 2001-2023 Free Software Foundation, Inc., and others.\
 Copying and distribution of this file, with or without modification, are permitted in any medium without royalty provided the copyright notice and this notice are preserved.

## SEE ALSO

The full documentation for **gnutls** is maintained as a Texinfo manual. If the /usr/share/doc/gnutls/ directory does not contain the HTML form visit

- https://www.gnutls.org/manual/