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author | Tatsuya Kinoshita <tats@vega.ocn.ne.jp> | 2011-05-04 07:18:09 +0000 |
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committer | Tatsuya Kinoshita <tats@vega.ocn.ne.jp> | 2011-05-04 07:18:09 +0000 |
commit | 5f8e0f8ef9a422691dd72e8a953a42a41478fcb4 (patch) | |
tree | 4b2df4796a534793648b3c4fc532fc36bd0cd525 /matrix.h | |
parent | Releasing debian version 0.3-2.4 (diff) | |
download | w3m-5f8e0f8ef9a422691dd72e8a953a42a41478fcb4.tar.gz w3m-5f8e0f8ef9a422691dd72e8a953a42a41478fcb4.zip |
Releasing debian version 0.5.1-1debian/0.5.1-1
Diffstat (limited to 'matrix.h')
-rw-r--r-- | matrix.h | 69 |
1 files changed, 69 insertions, 0 deletions
diff --git a/matrix.h b/matrix.h new file mode 100644 index 0000000..a415e85 --- /dev/null +++ b/matrix.h @@ -0,0 +1,69 @@ +/* $Id: matrix.h,v 1.7 2002/07/18 14:59:02 ukai Exp $ */ +/* + * matrix.h, matrix.c: Liner equation solver using LU decomposition. + * + * by K.Okabe Aug. 1999 + * + * You can use,copy,modify and distribute this program without any permission. + */ + +#ifndef _MATRIX_H +#include <math.h> +#include <string.h> + +/* + * Types. + */ + +struct matrix { + double *me; + int dim; +}; + +struct vector { + double *ve; + int dim; +}; + +typedef struct matrix *Matrix; +typedef struct vector *Vector; + +/* + * Macros. + */ + +#define M_VAL(m,i,j) ((m)->me[(i)*(m)->dim +(j)]) +#define V_VAL(v,i) ((v)->ve[i]) + +/* + * Compatible macros with those in Meschach Library. + */ + +#define m_entry(m,i,j) (M_VAL(m,i,j)) +#define v_entry(v,i) (V_VAL(v,i)) +#define m_copy(m1,m2) (bcopy((m1)->me,(m2)->me,(m1)->dim*(m1)->dim*sizeof(double))) +#define v_free(v) ((v)=NULL) +#define m_free(m) ((m)=NULL) +#define px_free(px) ((px)=NULL) +#define m_set_val(m,i,j,x) (M_VAL(m,i,j) = (x)) +#define m_add_val(m,i,j,x) (M_VAL(m,i,j) += (x)) +#define v_set_val(v,i,x) (V_VAL(v,i) = (x)) +#define v_add_val(v,i,x) (V_VAL(v,i) += (x)) +#define m_get(r,c) (new_matrix(r)) +#define v_get(n) (new_vector(n)) +#define px_get(n) (New_N(int,n)) +typedef struct matrix MAT; +typedef struct vector VEC; +typedef int PERM; + +extern int LUfactor(Matrix, int *); +extern Matrix m_inverse(Matrix, Matrix); +extern Matrix LUinverse(Matrix, int *, Matrix); +extern int LUsolve(Matrix, int *, Vector, Vector); +extern int Lsolve(Matrix, Vector, Vector, double); +extern int Usolve(Matrix, Vector, Vector, double); +extern Matrix new_matrix(int); +extern Vector new_vector(int); + +#define _MATRIX_H +#endif /* _MATRIX_H */ |