| #ifndef PI | |
| #define PI (3.14159265358979232846) | |
| #endif | |
| #ifndef PI2 | |
| #define PI2 (6.28318530717958465692) | |
| #endif | |
| #define D2R (0.01745329348) /* (2*pi)/360 */ | |
| #define R2D (57.29577951) /* 360/(2*pi) */ | |
| #ifndef MAX | |
| #define MAX(x,y) ((x)>(y) ?(x):(y)) | |
| #endif | |
| #ifndef MIN | |
| #define MIN(x,y) ((x)<(y) ?(x):(y)) | |
| #endif | |
| #ifndef ABS | |
| #define ABS(x) ((x)<0 ?(-(x)):(x)) | |
| #endif | |
| #ifndef SGN | |
| #define SGN(x) ((x)<0 ?(-1):((x)==0?(0):(1))) | |
| #endif | |
| #define MAX_HWORD (32767) | |
| #define MIN_HWORD (-32768) | |