1 files changed, 23 insertions, 0 deletions
diff --git a/Bachelor/Mikroprozessorsysteme2/ARM202U/EXAMPLES/CLSTAND/MEMMOVE.C b/Bachelor/Mikroprozessorsysteme2/ARM202U/EXAMPLES/CLSTAND/MEMMOVE.C
new file mode 100644
index 0000000..8039f11
--- /dev/null
+++ b/Bachelor/Mikroprozessorsysteme2/ARM202U/EXAMPLES/CLSTAND/MEMMOVE.C
@@ -0,0 +1,23 @@
+#include "memmove.h"
+
+void *__rt_memmove(void *a, const void *b, size_t n)
+/* copy memory taking care of overlap */
+/* Relies on sizeof(int)=sizeof(void *) and byte addressing.
+   Also that memory does not wrap round for direction test. */
+{
+    /* do it fast if word aligned ... */
+    if ((((int)a | (int)b | (int)n) & 3) == 0)
+    { int *wa,*wb;
+      n >>= 2;
+      if (a < (void *)b)
+         for (wa = (int *)a, wb = (int *)b; n-- > 0;) *wa++ = *wb++;
+      else for (wa = n+(int *)a, wb = n+(int *)b; n-- > 0;) *--wa = *--wb;
+    }
+    else
+    { char *ca,*cb;
+      if (a < (void *)b)
+         for (ca = (char *)a, cb = (char *)b; n-- > 0;) *ca++ = *cb++;
+      else for (ca = n+(char *)a, cb = n+(char *)b; n-- > 0;) *--ca = *--cb;
+    }
+    return a;
+}