1 /* $Id: matrix.h,v 1.7 2002/07/18 14:59:02 ukai Exp $ */
3 * matrix.h, matrix.c: Liner equation solver using LU decomposition.
7 * You can use,copy,modify and distribute this program without any permission.
28 typedef struct matrix *Matrix;
29 typedef struct vector *Vector;
35 #define M_VAL(m,i,j) ((m)->me[(i)*(m)->dim +(j)])
36 #define V_VAL(v,i) ((v)->ve[i])
39 * Compatible macros with those in Meschach Library.
42 #define m_entry(m,i,j) (M_VAL(m,i,j))
43 #define v_entry(v,i) (V_VAL(v,i))
44 #define m_copy(m1,m2) (bcopy((m1)->me,(m2)->me,(m1)->dim*(m1)->dim*sizeof(double)))
45 #define v_free(v) ((v)=NULL)
46 #define m_free(m) ((m)=NULL)
47 #define px_free(px) ((px)=NULL)
48 #define m_set_val(m,i,j,x) (M_VAL(m,i,j) = (x))
49 #define m_add_val(m,i,j,x) (M_VAL(m,i,j) += (x))
50 #define v_set_val(v,i,x) (V_VAL(v,i) = (x))
51 #define v_add_val(v,i,x) (V_VAL(v,i) += (x))
52 #define m_get(r,c) (new_matrix(r))
53 #define v_get(n) (new_vector(n))
54 #define px_get(n) (New_N(int,n))
55 typedef struct matrix MAT;
56 typedef struct vector VEC;
59 extern int LUfactor(Matrix, int *);
60 extern Matrix m_inverse(Matrix, Matrix);
61 extern Matrix LUinverse(Matrix, int *, Matrix);
62 extern int LUsolve(Matrix, int *, Vector, Vector);
63 extern int Lsolve(Matrix, Vector, Vector, double);
64 extern int Usolve(Matrix, Vector, Vector, double);
65 extern Matrix new_matrix(int);
66 extern Vector new_vector(int);
69 #endif /* _MATRIX_H */