| 76 |
|
|
| 77 |
|
extern char errmsg[]; /* global buffer for error messages */ |
| 78 |
|
|
| 79 |
+ |
#ifdef FASTMATH |
| 80 |
+ |
#define tcos cos |
| 81 |
+ |
#define tsin sin |
| 82 |
+ |
#define ttan tan |
| 83 |
+ |
#else |
| 84 |
+ |
extern double tcos(); /* table-based cosine approximation */ |
| 85 |
+ |
#define tsin(x) tcos((x)-(PI/2.)) |
| 86 |
+ |
#define ttan(x) (tsin(x)/tcos(x)) |
| 87 |
+ |
#endif |
| 88 |
+ |
/* custom version of assert(3) */ |
| 89 |
+ |
#define CHECK(be,et,em) ((be) ? error(et,em) : 0) |
| 90 |
+ |
#ifdef DEBUG |
| 91 |
+ |
#define DCHECK CHECK |
| 92 |
+ |
#else |
| 93 |
+ |
#define DCHECK(be,et,em) 0 |
| 94 |
+ |
#endif |
| 95 |
|
/* memory operations */ |
| 96 |
|
#ifdef NOSTRUCTASS |
| 97 |
|
#define copystruct(d,s) bcopy((char *)(s),(char *)(d),sizeof(*(d))) |
| 99 |
|
#define copystruct(d,s) (*(d) = *(s)) |
| 100 |
|
#endif |
| 101 |
|
|
| 102 |
< |
#ifdef BSD |
| 102 |
> |
#ifdef BSD |
| 103 |
|
extern long lseek(); |
| 104 |
|
#else |
| 105 |
|
#define bcopy(s,d,n) (void)memcpy(d,s,n) |
