1 |
/* |
2 |
** Author: Christian Reetz ([email protected]) |
3 |
*/ |
4 |
#ifndef __GBASIC_H |
5 |
#define __GBASIC_H |
6 |
|
7 |
#ifdef __cplusplus |
8 |
extern "C" { |
9 |
#endif |
10 |
|
11 |
|
12 |
#include <math.h> |
13 |
|
14 |
#ifndef g3Float |
15 |
#define g3Float double |
16 |
#define USE_DOUBLE 1 |
17 |
#define GB_EPSILON 1e-6 |
18 |
#else |
19 |
#define GB_EPSILON 1e-4 |
20 |
#endif |
21 |
|
22 |
typedef unsigned char uchar; |
23 |
|
24 |
#define DEG2RAD(x) ((x)*M_PI/180.0) |
25 |
#define RAD2DEG(x) ((x)*180.0/M_PI) |
26 |
|
27 |
#define GB_SWAP(a,b) {g3Float temp=(a);(a)=(b);(b)=temp;} |
28 |
#define gb_swap(a,b) GB_SWAP(a,b) |
29 |
|
30 |
#define gb_random() (((g3Float) rand())/(RAND_MAX-1)) |
31 |
|
32 |
int gb_epsorder(g3Float a,g3Float b); |
33 |
|
34 |
int gb_epseq(g3Float a,g3Float b); |
35 |
|
36 |
int gb_inrange(g3Float a,g3Float rb,g3Float re); |
37 |
|
38 |
int gb_signum(g3Float a); |
39 |
|
40 |
g3Float gb_max(g3Float a,g3Float b); |
41 |
g3Float gb_min(g3Float a,g3Float b); |
42 |
|
43 |
/* Roots of quadratic formula |
44 |
Returns zero if roots are not real, 1 for single root and 2 otherwise |
45 |
*/ |
46 |
int gb_getroots(g3Float* r1,g3Float* r2,g3Float a,g3Float b,g3Float c); |
47 |
|
48 |
#ifdef __cplusplus |
49 |
} |
50 |
#endif |
51 |
|
52 |
|
53 |
#endif |