double *discrete_cdf_to_xy ( int n1, int n2, double cdf[], int n, double u[],
  int *seed );
double *get_discrete_pdf_data1 ( int n1, int n2 );
double *get_discrete_pdf_data2 ( int n1, int n2 );
void get_discrete_pdf_size1 ( int *n1, int *n2 );
void get_discrete_pdf_size2 ( int *n1, int *n2 );
double *r8mat_copy_new ( int m, int n, double a1[] );
void r8mat_scale ( int m, int n, double s, double a[] );
double r8mat_sum ( int m, int n, double a[] );
void r8mat_write ( char *output_filename, int m, int n, double table[] );
double *r8vec_uniform_01_new ( int n, int *seed );
double *set_discrete_cdf ( int n1, int n2, double pdf[] );