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C/C++ Source or Header  |  1991-11-12  |  583 b   |  26 lines
  1. /* Copyright (c) 1990 Regents of the University of California */
  2.  
  3. /* SCCSid "@(#)mat4.h 2.1 11/12/91 LBL" */
  4.  
  5. /*
  6.  * Definitions for 4x4 matrix operations
  7.  */
  8.  
  9. #include  "fvect.h"
  10.  
  11. typedef FLOAT  MAT4[4][4];
  12.  
  13. #ifdef  BSD
  14. #define  copymat4(m4a,m4b)    bcopy((char *)m4b,(char *)m4a,sizeof(MAT4))
  15. #else
  16. #define  copymat4(m4a,m4b)    (void)memcpy((char *)m4a,(char *)m4b,sizeof(MAT4))
  17. extern char  *memcpy();
  18. #endif
  19.  
  20. #define  MAT4IDENT        { 1.,0.,0.,0., 0.,1.,0.,0., \
  21.                 0.,0.,1.,0., 0.,0.,0.,1. }
  22.  
  23. extern MAT4  m4ident;
  24.  
  25. #define  setident4(m4)        copymat4(m4, m4ident)
  26.