perflab added

perflab/poly/fcyc.h

@@ -0,0 +1,52 @@
+
+/* Fcyc measures the speed of any "test function."  Such a function
+   is passed a list of integer parameters, which it may interpret
+   in any way it chooses.
+*/
+
+typedef void (*test_funct)(long int *);
+
+/* Compute number of cycles used by function f on given set of parameters */
+double fcyc(test_funct f, int* params);
+
+/***********************************************************/
+/* Set the various parameters used by measurement routines */
+
+
+/* When set, will run code to clear cache before each measurement
+   Default = 0
+*/
+void set_fcyc_clear_cache(long int clear);
+
+/* Set size of cache to use when clearing cache
+   Default = 1<<19 (512KB)
+*/
+void set_fcyc_cache_size(long int bytes);
+
+/* Set size of cache block
+   Default = 32
+*/
+void set_fcyc_cache_block(long int bytes);
+
+/* When set, will attempt to compensate for timer interrupt overhead
+   Default = 0
+*/
+void set_fcyc_compensate(long int compensate);
+
+/* Value of K in K-best
+   Default = 3
+*/
+void set_fcyc_k(long int k);
+
+/* Maximum number of samples attempting to find K-best within some tolerance.
+   When exceeded, just return best sample found.
+   Default = 20
+*/
+void set_fcyc_maxsamples(long int maxsamples);
+
+/* Tolerance required for K-best
+   Default = 0.01
+*/
+void set_fcyc_epsilon(double epsilon);
+
+