1 files changed, 67 insertions, 0 deletions
diff --git a/btl/accuracy/lapack/timer.hh b/btl/accuracy/lapack/timer.hh
new file mode 100644
index 0000000..82a0767
--- /dev/null
+++ b/btl/accuracy/lapack/timer.hh
@@ -0,0 +1,67 @@
+//=====================================================
+// Copyright (C) 2011 Andrea Arteaga <andyspiros@gmail.com>
+//=====================================================
+//
+// This program is free software; you can redistribute it and/or
+// modify it under the terms of the GNU General Public License
+// as published by the Free Software Foundation; either version 2
+// of the License, or (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+// You should have received a copy of the GNU General Public License
+// along with this program; if not, write to the Free Software
+// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+//
+#ifndef TIMER_HH
+#define TIMER_HH
+
+#include <sys/time.h>
+
+class Timer
+{
+public:
+  Timer() : ZERO(0.)
+  { }
+
+  void start()
+  {
+    t = walltime(&ZERO);
+  }
+
+  double elapsed()
+  {
+    return walltime(&t);
+  }
+
+private:
+  double t;
+
+  const double ZERO;
+
+  static double walltime(const double *t0)
+  {
+    double mic;
+    double time;
+    double mega = 0.000001;
+    struct timeval tp;
+    struct timezone tzp;
+    static long base_sec = 0;
+    static long base_usec = 0;
+
+    (void) gettimeofday(&tp, &tzp);
+    if (base_sec == 0) {
+      base_sec = tp.tv_sec;
+      base_usec = tp.tv_usec;
+    }
+
+    time = (double) (tp.tv_sec - base_sec);
+    mic = (double) (tp.tv_usec - base_usec);
+    time = (time + mic * mega) - *t0;
+    return (time);
+  }
+};
+
+#endif /* TIMER_HH */