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#ifndef SERIAL_UTILS_H /* Include guard */
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#define SERIAL_UTILS_H
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#include <stdbool.h>
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//GPU error check snippet taken from:
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//https://stackoverflow.com/a/14038590
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#define gpuErrchk(ans) { gpuAssert((ans), __FILE__, __LINE__); }
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inline void gpuAssert(cudaError_t code, const char *file, int line, bool abort=true){
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if (code != cudaSuccess)
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{
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fprintf(stderr,"GPUassert: %s %s %d\n", cudaGetErrorString(code), file, line);
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if (abort) exit(code);
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}
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}
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extern int DEVIATION;
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extern int NUMBER_OF_POINTS;
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extern int DIMENSIONS;
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extern char* POINTS_FILENAME;
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extern char* LABELS_FILENAME;
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typedef struct parameters {
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double epsilon;
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bool verbose;
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bool display;
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} parameters;
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//Function get_args parses command line arguments.
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void get_args(int argc, char **argv);
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//Function init reads the dataset and label arrays from the corresponding files.
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void init(double ***vectors, char **labels, parameters *params);
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//Function meanshift recursively shifts original points according to th
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//mean-shift algorithm saving the result to shiftedPoints. Struct opt has user
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//options, h is the desirable deviation.
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int meanshift(double **original_points, double ***shifted_points, int h
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, parameters *opt);
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//Function norm returns the second norm of matrix of dimensions rowsXcols.
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double norm(double **matrix, int rows, int cols);
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//Function multiply allocates memory in GPU, sends the data and calls the
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//multiply kernel function.
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void multiply(double **kernel_matrix, double **original_points
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, double ***new_shift);
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//Function calculateDistance returns the distance between x and y vectors.
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double calculateDistance(double *y, double *x);
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//Function alloc_2d_double allocates rows*cols bytes of continuous memory.
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double **alloc_2d_double(int rows, int cols);
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//Function duplicate copies the values of source array to dest array.
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void duplicate(double **source, int rows, int cols, double ***dest);
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//Function print_matrix prints array of dimensions rowsXcols to the console.
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void print_matrix(double **array, int rows, int cols);
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//Function save_matrix prints matrix in a csv file with path/filename
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//"output/output_iteration". If a file already exists new lines are concatenated.
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void save_matrix(double **matrix
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, int iteration);
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#endif //SERIAL_UTILS_H
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