/* Copyright (c) 1992 Regents of the University of California */

/* SCCSid "@(#)standard.h 2.3 9/24/92 LBL" */

/*
 *      Miscellaneous definitions required by many routines.
 */

#include  <stdio.h>

#include  <fcntl.h>

#include  <math.h>

#include  <errno.h>

#include  "mat4.h"
				/* regular transformation */
typedef struct {
	MAT4  xfm;                              /* transform matrix */
	FLOAT  sca;                             /* scalefactor */
}  XF;
				/* complemetary tranformation */
typedef struct {
	XF  f;                                  /* forward */
	XF  b;                                  /* backward */
}  FULLXF;

#ifdef  M_PI
#define  PI             M_PI
#else
#define  PI             3.14159265358979323846
#endif

#ifndef  F_OK                   /* mode bits for access(2) call */
#define  R_OK           4               /* readable */
#define  W_OK           2               /* writable */
#define  X_OK           1               /* executable */
#define  F_OK           0               /* exists */
#endif
				/* error codes */
#define  WARNING        1               /* non-fatal error */
#define  USER           2               /* fatal user-caused error */
#define  SYSTEM         3               /* fatal system-related error */
#define  INTERNAL       4               /* fatal program-related error */
#define  CONSISTENCY    5               /* bad consistency check, abort */
#define  COMMAND        6               /* interactive error */

extern char  errmsg[];                  /* global buffer for error messages */

					/* memory operations */
#ifdef  NOSTRUCTASS
#define  copystruct(d,s)        bcopy((char *)(s),(char *)(d),sizeof(*(d)))
#else
#define  copystruct(d,s)        (*(d) = *(s))
#endif

#ifndef  BSD
#define  bcopy(s,d,n)           (void)memcpy(d,s,n)
#define  bzero(d,n)             (void)memset(d,0,n)
#define  bcmp(b1,b2,n)          memcmp(b1,b2,n)
extern char  *memcpy(), *memset();
#define  index                  strchr
#define  rindex                 strrchr
#endif

#ifndef atof
extern double  atof();
#endif
extern char  *sskip();
extern char  *getpath(), *getenv();
#ifndef malloc
extern char  *malloc(), *calloc(), *realloc();
#endif
extern char  *bmalloc(), *savestr(), *savqstr();

#ifdef MSDOS
#define NIX 1
#endif
#ifdef AMIGA
#define NIX 1
#endif