tf.h

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#ifndef LIBA_TF_H
#define LIBA_TF_H
 
#include "a.h"

 
typedef struct a_tf a_tf;
 
#if defined(__cplusplus)
namespace a
{
typedef struct a_tf tf;
} /* namespace a */
extern "C" {
#endif /* __cplusplus */

A_EXTERN void a_tf_set_num(a_tf *ctx, unsigned int num_n, a_real const *num_p, a_real *input);

A_EXTERN void a_tf_set_den(a_tf *ctx, unsigned int den_n, a_real const *den_p, a_real *output);

A_EXTERN void a_tf_init(a_tf *ctx,
                        unsigned int num_n, a_real const *num_p, a_real *input,
                        unsigned int den_n, a_real const *den_p, a_real *output);

A_EXTERN a_real a_tf_iter(a_tf const *ctx, a_real x);

A_EXTERN void a_tf_zero(a_tf const *ctx);
 
#if defined(__cplusplus)
} /* extern "C" */
#endif /* __cplusplus */

struct a_tf
{
    a_real *input; 
    a_real *output; 
    a_real const *num_p; 
    a_real const *den_p; 
    unsigned int num_n; 
    unsigned int den_n; 
#if defined(__cplusplus)
    A_INLINE void init(unsigned int num_n_, a_real const *num_p_, a_real *input_,
                       unsigned int den_n_, a_real const *den_p_, a_real *output_)
    {
        a_tf_init(this, num_n_, num_p_, input_, den_n_, den_p_, output_);
    }
    A_INLINE void set_num(unsigned int num_n_, a_real const *num_p_, a_real *input_)
    {
        a_tf_set_num(this, num_n_, num_p_, input_);
    }
    A_INLINE void set_den(unsigned int den_n_, a_real const *den_p_, a_real *output_)
    {
        a_tf_set_den(this, den_n_, den_p_, output_);
    }
    A_INLINE a_real operator()(a_real x) const
    {
        return a_tf_iter(this, x);
    }
    A_INLINE void zero() const { a_tf_zero(this); }
#endif /* __cplusplus */
};

 
#endif /* a/tf.h */