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/* RCSid $Id$ */
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/*
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* Header file for general matrix routines.
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*/
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#ifndef _RAD_RMATRIX_H_
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#define _RAD_RMATRIX_H_
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#include "cmatrix.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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/* General plane-ordered component matrix */
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typedef struct {
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int nrows, ncols, ncomp;
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double mtx[1]; /* extends struct */
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} RMATRIX;
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#define rmx_indx(rm,r,c,i) (((i)*(rm)->nrows+(r))*(rm)->ncols+(c))
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#define rmx_lval(rm,r,c,i) (rm)->mtx[rmx_indx(rm,r,c,i)]
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#define rmx_free(rm) free(rm)
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/* Allocate a nr x nc matrix with n components */
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extern RMATRIX *rmx_alloc(int nr, int nc, int n);
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/* Load matrix from supported file type */
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extern RMATRIX *rmx_load(const char *fname);
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/* Write matrix to file type indicated by dt */
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extern long rmx_write(const RMATRIX *rm, int dtype, FILE *fp);
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/* Allocate and assign square identity matrix with n components */
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extern RMATRIX *rmx_identity(int dim, int n);
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/* Duplicate the given matrix */
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extern RMATRIX *rmx_copy(const RMATRIX *rm);
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/* Swap rows and columns in the given matrix in situ */
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extern int rmx_transpose(RMATRIX *rm);
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/* Multiply (concatenate) two matrices and allocate the result */
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extern RMATRIX *rmx_multiply(const RMATRIX *m1, const RMATRIX *m2);
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/* Sum second matrix into first, applying scale factor beforehand */
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extern int rmx_sum(RMATRIX *msum, const RMATRIX *madd, const double sf[]);
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/* Scale the given matrix by the indicated scalar component vector */
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extern int rmx_scale(RMATRIX *rm, const double sf[]);
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/* Allocate new matrix and apply component transformation */
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extern RMATRIX *rmx_transform(const RMATRIX *msrc, int n, const double cmat[]);
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/* Convert a color matrix to newly allocated RMATRIX buffer */
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extern RMATRIX *rmx_from_cmatrix(const CMATRIX *cm);
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/* Convert general matrix to newly allocated CMATRIX buffer */
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extern CMATRIX *cm_from_rmatrix(const RMATRIX *rm);
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#ifdef __cplusplus
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}
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#endif
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#endif /* _RAD_RMATRIX_H_ */
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