Added George Neville-Neil's timing module
diff --git a/Modules/timing.h b/Modules/timing.h
new file mode 100644
index 0000000..aef6457
--- /dev/null
+++ b/Modules/timing.h
@@ -0,0 +1,87 @@
+/*
+ * Copyright (c) 1993 George V. Neville-Neil
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by George V. Neville-Neil
+ * 4. The name, George Neville-Neil may not be used to endorse or promote
+ * products derived from this software without specific prior
+ * written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+/*
+ *
+ * File: $Id$
+ *
+ * Author: George V. Neville-Neil
+ *
+ * Update History: $Log$
+ * Update History: Revision 2.1 1994/01/02 23:22:19 guido
+ * Update History: Added George Neville-Neil's timing module
+ * Update History:
+ * Revision 1.1 93/12/28 13:14:19 gnn
+ * Initial revision
+ *
+ * Revision 1.1 93/12/23 18:59:10 gnn
+ * Initial revision
+ *
+ * Revision 1.3 93/07/22 15:57:39 15:57:39 gnn (George Neville-Neil)
+ * Added copyright message.
+ *
+ * Revision 1.2 1993/07/22 12:12:34 gnn
+ * Latest macros. They now evaluate to rvalues.
+ *
+ * Revision 1.1 93/07/19 16:56:18 16:56:18 gnn (George Neville-Neil)
+ * Initial revision
+ *
+ *
+ *
+ */
+
+#ifndef _TIMING_H_
+#define _TIMING_H_
+
+#include <sys/time.h>
+
+static struct timeval aftertp, beforetp;
+
+#define BEGINTIMING gettimeofday(&beforetp, NULL)
+
+#define ENDTIMING gettimeofday(&aftertp, NULL); \
+ if(beforetp.tv_usec > aftertp.tv_usec) \
+ { \
+ aftertp.tv_usec += 1000000; \
+ aftertp.tv_sec--; \
+ }
+
+#define TIMINGUS (((aftertp.tv_sec - beforetp.tv_sec) * 1000000) + \
+ (aftertp.tv_usec - beforetp.tv_usec))
+
+#define TIMINGMS (((aftertp.tv_sec - beforetp.tv_sec) * 1000) + \
+ ((aftertp.tv_usec - beforetp.tv_usec) / 1000))
+
+#define TIMINGS ((aftertp.tv_sec - beforetp.tv_sec) + \
+ (aftertp.tv_usec - beforetp.tv_usec) / 1000000)
+
+#endif /* _TIMING_H_ */