Initial code
diff --git a/peakval_sse2.c b/peakval_sse2.c
new file mode 100644
index 0000000..79d9059
--- /dev/null
+++ b/peakval_sse2.c
@@ -0,0 +1,34 @@
+/* Portable C version of peakval
+ * Copyright 2004 Phil Karn, KA9Q
+ */
+#include <stdlib.h>
+#include "fec.h"
+
+int peakval_sse2_assist(signed short *,int);
+
+int peakval_sse2(signed short *b,int cnt){
+ int peak = 0;
+ int a;
+
+ while(((int)b & 15) != 0 && cnt != 0){
+ a = abs(*b);
+ if(a > peak)
+ peak = a;
+ b++;
+ cnt--;
+ }
+ a = peakval_sse2_assist(b,cnt);
+ if(a > peak)
+ peak = a;
+ b += cnt & ~7;
+ cnt &= 7;
+
+ while(cnt != 0){
+ a = abs(*b);
+ if(a > peak)
+ peak = a;
+ b++;
+ cnt--;
+ }
+ return peak;
+}