matrix.h

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/*******************************************************************
*   matrix.h - Interface to module for handling matrix operation   *
*   Copyright by Xiangyu Dong                                      *
*******************************************************************/

// dmatrix: allocate a matrix of Double
double **dmatrix(int nrl, int nrh, int ncl, int nch);
// free_dmatrix: free a dmatrix
void free_dmatrix(double **m,int nrl,int nrh,int ncl,int nch);
// dvector: allocate a vector of Double
double *dvector(int nl, int nh);
// free_dvector: free a dvector
void free_dvector(double *v,int nl,int nh);
// norm_vector: calculate the norm value of a vector
double norm_dvector(double *v, int nl, int nh);