Changes in uspace/lib/posix/src/string.c [2498b95:7c3fb9b] in mainline

File:

• uspace/lib/posix/src/string.c (modified) (1 diff)

uspace/lib/posix/src/string.c

@@ -288 +288 @@
 
         return 0;
+}
+
+/**
+ * Find byte in memory.
+ *
+ * @param mem Memory area in which to look for the byte.
+ * @param c Byte to look for.
+ * @param n Maximum number of bytes to be inspected.
+ * @return Pointer to the specified byte on success,
+ *     NULL pointer otherwise.
+ */
+void *memchr(const void *mem, int c, size_t n)
+{
+        assert(mem != NULL);
+
+        const unsigned char *s = mem;
+
+        for (size_t i = 0; i < n; ++i) {
+                if (s[i] == (unsigned char) c) {
+                        return (void *) &s[i];
+                }
+        }
+        return NULL;
 }