/* coefficients.h: macro's to manipulate radiance coefficients. */

#ifndef _COEFFICIENTS_H_
#define _COEFFICIENTS_H_

#ifdef __cplusplus
extern "C" {
#endif

#include "color.h"

#define CLEARCOEFFICIENTS(c, n) {int _i; COLOR *_c;			\
  for (_i=0, _c=(c); _i<(n); _i++, _c++) COLORCLEAR(*_c);		\
}

#define COPYCOEFFICIENTS(dst, src, n) {int _i; COLOR *_d, *_s; 		\
  for (_i=0, _d=(dst), _s=(src); _i<(n); _i++, _d++, _s++) *_d=*_s;	\
}

#define ADDCOEFFICIENTS(dst, extra, n) {int _i; COLOR *_d, *_s; 	\
  for (_i=0, _d=(dst), _s=(extra); _i<(n); _i++, _d++, _s++) {		\
    COLORADD(*_d, *_s, *_d);						\
}}

#define PRINTCOEFFICIENTS(fp, c, n) {int _i; 				\
  ColorPrint(fp, (c)[0]);						\
  for (_i=1; _i<(n); _i++) {						\
    fprintf(fp, ", ");							\
    ColorPrint(fp, (c)[_i]); 						\
  }}

#ifdef __cplusplus
}
#endif

#endif /*_COEFFICIENTS_H_*/