/* 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)(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(int clear);/* Set size of cache to use when clearing cache    Default = 1<<19 (512KB)*/void set_fcyc_cache_size(int bytes);/* Set size of cache block    Default = 32*/void set_fcyc_cache_block(int bytes);/* When set, will attempt to compensate for timer interrupt overhead    Default = 0*/void set_fcyc_compensate(int compensate);/* Value of K in K-best   Default = 3*/void set_fcyc_k(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(int maxsamples);/* Tolerance required for K-best   Default = 0.01*/void set_fcyc_epsilon(double epsilon);