Added some of <string.h>.

[pdclib] / functions / string / memchr.c

diff --git a/functions/string/memchr.c b/functions/string/memchr.c
new file mode 100644 (file)
index 0000000..4194a85
--- /dev/null
+++ b/functions/string/memchr.c
@@ -0,0 +1,25 @@
+/* $Id$ */
+
+/* Release $Name$ */
+
+/* memchr( const void *, int, size_t )
+
+   This file is part of the Public Domain C Library (PDCLib).
+   Permission is granted to use, modify, and / or redistribute at will.
+*/
+
+#include <string.h>
+
+void * memchr( const void * s, int c, size_t n )
+{
+    const unsigned char * p = (const unsigned char *) s;
+    while ( n-- )
+    {
+        if ( *p == (unsigned char) c )
+        {
+            return (void *) p;
+        }
+        ++p;
+    }
+    return NULL;
+}