From abea1c38a94183999c07c848f0b48ca55b42b653 Mon Sep 17 00:00:00 2001
From: Daniel Campora <daniel@wipy.io>
Date: Tue, 28 Apr 2015 15:44:14 +0200
Subject: [PATCH] lib/libc: Add memchr. We already have strchr, but memchr is
 useful too.

---
 lib/libc/string0.c | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/lib/libc/string0.c b/lib/libc/string0.c
index 136c1b49cc..8ba118b705 100644
--- a/lib/libc/string0.c
+++ b/lib/libc/string0.c
@@ -114,6 +114,18 @@ int memcmp(const void *s1, const void *s2, size_t n) {
     return 0;
 }
 
+void *memchr(const void *s, int c, size_t n) {
+    if (n != 0) {
+        const unsigned char *p = s;
+
+        do {
+            if (*p++ == c)
+                return ((void *)(p - 1));
+        } while (--n != 0);
+    }
+    return 0;
+}
+
 size_t strlen(const char *str) {
     int len = 0;
     for (const char *s = str; *s; s++) {