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(); |