src/common/mat4.h

/* Copyright (c) 1990 Regents of the University of California */

/* SCCSid "$SunId$ LBL" */

/*
 * Definitions for 4x4 matrix operations
 */

#include  "fvect.h"

typedef double  MAT4[4][4];

#ifdef  BSD
#define  copymat4(m4a,m4b)      bcopy((char *)m4b,(char *)m4a,sizeof(MAT4))
#else
#define  copymat4(m4a,m4b)      (void)memcpy((char *)m4a,(char *)m4b,sizeof(MAT4))
extern char  *memcpy();
#endif

#define  MAT4IDENT              { 1.,0.,0.,0., 0.,1.,0.,0., \
                                0.,0.,1.,0., 0.,0.,0.,1. }

extern MAT4  m4ident;

#define  setident4(m4)          copymat4(m4, m4ident)
Revision:	1.2
Committed:	Tue Jun 18 12:01:18 1991 UTC (32 years, 10 months ago) by greg
Content type:	text/plain
Branch:	MAIN
Changes since 1.1:	+7 -0 lines
Log Message:	changed setident4() into a macro
#	Content
1	/* Copyright (c) 1990 Regents of the University of California */
2
3	/* SCCSid "$SunId$ LBL" */
4
5	/*
6	* Definitions for 4x4 matrix operations
7	*/
8
9	#include "fvect.h"
10
11	typedef double 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)