From a31630e0d5b9880c716d9004ef4154396ba41ebc Mon Sep 17 00:00:00 2001
From: "Matthias P. Braendli" <matthias.braendli@mpb.li>
Date: Thu, 2 Jan 2014 21:55:13 +0100
Subject: Extract fec-3.0.1

---
 rs_speedtest.c | 54 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 54 insertions(+)
 create mode 100644 rs_speedtest.c

(limited to 'rs_speedtest.c')

diff --git a/rs_speedtest.c b/rs_speedtest.c
new file mode 100644
index 0000000..225f160
--- /dev/null
+++ b/rs_speedtest.c
@@ -0,0 +1,54 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <time.h>
+#include <sys/time.h>
+#include <sys/resource.h>
+#include "fec.h"
+
+int main(){
+  unsigned char block[255];
+  int i;
+  void *rs;
+  struct rusage start,finish;
+  double extime;
+  int trials = 10000;
+
+  for(i=0;i<223;i++)
+    block[i] = 0x01;
+
+  rs = init_rs_char(8,0x187,112,11,32,0);
+  encode_rs_char(rs,block,&block[223]);
+
+  getrusage(RUSAGE_SELF,&start);
+  for(i=0;i<trials;i++){
+#if 0
+    block[0] ^= 0xff; /* Introduce an error */
+    block[2] ^= 0xff; /* Introduce an error */
+#endif
+    decode_rs_char(rs,block,NULL,0);
+  }
+  getrusage(RUSAGE_SELF,&finish);
+  extime = finish.ru_utime.tv_sec - start.ru_utime.tv_sec + 1e-6*(finish.ru_utime.tv_usec - start.ru_utime.tv_usec);
+  
+  printf("Execution time for %d Reed-Solomon blocks using general decoder: %.2f sec\n",trials,extime);
+  printf("decoder speed: %g bits/s\n",trials*223*8/extime);
+
+
+  encode_rs_8(block,&block[223],0);
+  getrusage(RUSAGE_SELF,&start);
+  for(i=0;i<trials;i++){
+#if 0
+    block[0] ^= 0xff; /* Introduce an error */
+    block[2] ^= 0xff; /* Introduce an error */
+#endif
+    decode_rs_8(block,NULL,0,0);
+  }
+  getrusage(RUSAGE_SELF,&finish);
+  extime = finish.ru_utime.tv_sec - start.ru_utime.tv_sec + 1e-6*(finish.ru_utime.tv_usec - start.ru_utime.tv_usec);
+  printf("Execution time for %d Reed-Solomon blocks using CCSDS decoder: %.2f sec\n",trials,extime);
+  printf("decoder speed: %g bits/s\n",trials*223*8/extime);
+
+  exit(0);
+}
+
-- 
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