utility.h

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#ifndef DH_UTILITY_H_INCLUDED
#define DH_UTILITY_H_INCLUDED
 
#include "dh/filter-types.h"
#include "dh/dh_complex.h"
 
#ifdef __cplusplus
extern "C" {
#endif
 
void dh_compute_poles_on_s_plane(COMPLEX* ptr, size_t len);
 
void dh_compute_polynomial_coefficients_from_roots(COMPLEX* roots, size_t len, COMPLEX* outputs);
 
 
void dh_normalize_gain_at(double* numerator, size_t len_numerator,double* denominator, size_t len_denominator, double x_evaluate);
 
 
COMPLEX dh_gain_at(double* numerator, size_t len_numerator,double* denominator, size_t len_denominator, double x_evaluate);
 
void dh_convolve_parameters(double * param1,double * param2, size_t len,double * out );
 
typedef struct 
{
    size_t (*zeros)(COMPLEX*,size_t,size_t,void*);
    
    size_t (*poles)(COMPLEX*,size_t,size_t,void*);
    
    void* user_data;
 
    DH_FILTER_CHARACTERISTIC characteristic;
} dh_transfer_function_callbacks;
 
DH_FILTER_RETURN_VALUE dh_compute_transfer_function_polynomials(dh_filter_data* filter, const dh_filter_parameters* options, const dh_transfer_function_callbacks cbs);
 
#define MAYBE_UNUSED(X) (void)((X))
 
#ifdef __cplusplus
}
#endif
 
#endif /* DH_UTILITY_H_INCLUDED */