| 1 |
/* Copyright (c) 1990 Regents of the University of California */ |
| 2 |
|
| 3 |
/* SCCSid "$SunId$ LBL" */ |
| 4 |
|
| 5 |
/* |
| 6 |
* Miscellaneous definitions required by many routines. |
| 7 |
*/ |
| 8 |
|
| 9 |
#include <stdio.h> |
| 10 |
|
| 11 |
#include <math.h> |
| 12 |
|
| 13 |
#include <errno.h> |
| 14 |
|
| 15 |
#include "mat4.h" |
| 16 |
/* regular transformation */ |
| 17 |
typedef struct { |
| 18 |
MAT4 xfm; /* transform matrix */ |
| 19 |
double sca; /* scalefactor */ |
| 20 |
} XF; |
| 21 |
/* complemetary tranformation */ |
| 22 |
typedef struct { |
| 23 |
XF f; /* forward */ |
| 24 |
XF b; /* backward */ |
| 25 |
} FULLXF; |
| 26 |
|
| 27 |
#define FHUGE (1e10) /* large real number */ |
| 28 |
#define FTINY (1e-6) /* small real number */ |
| 29 |
|
| 30 |
#ifdef M_PI |
| 31 |
#define PI M_PI |
| 32 |
#else |
| 33 |
#define PI 3.14159265358979323846 |
| 34 |
#endif |
| 35 |
|
| 36 |
#ifndef F_OK /* mode bits for access(2) call */ |
| 37 |
#define R_OK 4 /* readable */ |
| 38 |
#define W_OK 2 /* writable */ |
| 39 |
#define X_OK 1 /* executable */ |
| 40 |
#define F_OK 0 /* exists */ |
| 41 |
#endif |
| 42 |
/* error codes */ |
| 43 |
#define WARNING 1 /* non-fatal error */ |
| 44 |
#define USER 2 /* fatal user-caused error */ |
| 45 |
#define SYSTEM 3 /* fatal system-related error */ |
| 46 |
#define INTERNAL 4 /* fatal program-related error */ |
| 47 |
#define CONSISTENCY 5 /* bad consistency check, abort */ |
| 48 |
#define COMMAND 6 /* interactive error */ |
| 49 |
|
| 50 |
extern char errmsg[]; /* global buffer for error messages */ |
| 51 |
|
| 52 |
extern int errno; /* system error number */ |
| 53 |
|
| 54 |
/* memory operations */ |
| 55 |
#ifdef STRUCTASSIGN |
| 56 |
#define copystruct(d,s) (*(d) = *(s)) |
| 57 |
#else |
| 58 |
#define copystruct(d,s) bcopy((char *)(s),(char *)(d),sizeof(*(d))) |
| 59 |
#endif |
| 60 |
|
| 61 |
#ifndef BSD |
| 62 |
#define bcopy(s,d,n) (void)memcpy(d,s,n) |
| 63 |
#define bzero(d,n) (void)memset(d,0,n) |
| 64 |
#define bcmp(b1,b2,n) memcmp(b1,b2,n) |
| 65 |
extern char *memcpy(), *memset(); |
| 66 |
#define index strchr |
| 67 |
#define rindex strrchr |
| 68 |
#endif |
| 69 |
|
| 70 |
extern char *sskip(); |
| 71 |
extern char *getpath(), *getenv(); |
| 72 |
extern char *malloc(), *calloc(), *realloc(); |
| 73 |
extern char *bmalloc(), *savestr(), *savqstr(); |
