---
name: "memrchr"
section: "3"
platform: "linux"
package: "man-pages"
version: "6.19-1"
release: "Arch Linux 2026-11-01"
platforms: ["linux", "freebsd"]
url: "https://new.carta.tech/memrchr"
---

# memrchr(3)

memory rear-search character

## NAME

memrchr - memory rear-search character

## LIBRARY

Standard C library (*libc*, *-lc*)

## SYNOPSIS

```
#define _GNU_SOURCE  // See feature_test_macros(7)
#include <string.h>  // see memory.h(3head)
```

**void \*memrchr(**size\_t n;               **const void** *s***\[***n***\], int** *c***, size\_t** *n***);**

## DESCRIPTION

**memrchr**() is like [**memchr**(3)](/memchr/3.md), except that it searches backward from the end of the *n* bytes pointed to by *s* instead of forward from the beginning.

## RETURN VALUE

See [**memchr**(3)](/memchr/3.md).

## ATTRIBUTES

For an explanation of the terms used in this section, see [**attributes**(7)](/attributes/7.md).

| | | |
| --- | --- | --- |
| **Interface** | **Attribute** | **Value** |
| **memrchr**() | Thread safety | MT-Safe |

## STANDARDS

GNU.

## HISTORY

glibc 2.2.

## SEE ALSO

[**memory.h**(3head)](/memory.h/3head.md), [**memchr**(3)](/memchr/3.md)