summaryrefslogtreecommitdiff
path: root/src/string/memmove.c
diff options
context:
space:
mode:
Diffstat (limited to 'src/string/memmove.c')
-rw-r--r--src/string/memmove.c14
1 files changed, 14 insertions, 0 deletions
diff --git a/src/string/memmove.c b/src/string/memmove.c
new file mode 100644
index 00000000..22bb4b35
--- /dev/null
+++ b/src/string/memmove.c
@@ -0,0 +1,14 @@
+#include <string.h>
+
+void *memmove(void *dest, const void *src, size_t n)
+{
+ char *d = dest;
+ const char *s = src;
+ if (d==s) return d;
+ if ((size_t)(d-s) < n) {
+ while (n--) d[n] = s[n];
+ return dest;
+ }
+ /* Assumes memcpy is overlap-safe when dest < src */
+ return memcpy(d, s, n);
+}