131 lines
2.8 KiB
Text
131 lines
2.8 KiB
Text
#ifndef _STDINC_H_
|
|
#define _STDINC_H_
|
|
|
|
#include <stdio.h>
|
|
#include <math.h>
|
|
|
|
#ifndef AND
|
|
#define AND &&
|
|
#define OR ||
|
|
#define NOT !
|
|
#endif
|
|
|
|
#ifndef true
|
|
#define true 1
|
|
#define false 0
|
|
#endif
|
|
|
|
#ifndef Bool
|
|
typedef char Bool;
|
|
#endif
|
|
|
|
#ifndef MAX
|
|
#define MAX(a,b) ((a)>(b) ? (a) : (b))
|
|
#define MIN(a,b) ((a)<(b) ? (a) : (b))
|
|
#endif
|
|
|
|
#ifndef ABS
|
|
#define ABS(a) ((a)>=0 ? (a) : (-(a)))
|
|
#endif
|
|
|
|
/********* TOGGLE_BOOL(boolean) : toggles values of 'boolean' ******/
|
|
#ifndef TOGGLE_BOOL
|
|
#define TOGGLE_BOOL(a) ((a)=1-(a))
|
|
#endif
|
|
|
|
|
|
/******************** bit comparisons and operations ***************/
|
|
#ifndef TEST_BIT
|
|
#define TEST_BIT( x, b ) (((x) & (1<<(b))) != 0 )
|
|
#define SET_BIT( x, b ) ((x) |= (1 << (b)))
|
|
#define CLEAR_BIT( x, b ) ((x) &= ~(1 << (b)))
|
|
#define TOGGLE_BIT( x, b ) ((TEST_BIT(x,b)) ?(CLEAR_BIT(x,b)):(SET_BIT(x,b)))
|
|
#endif
|
|
|
|
#ifndef TEST_AND
|
|
#define TEST_AND( a, b ) ((a&b)==b)
|
|
#endif
|
|
|
|
|
|
#ifndef M_PI
|
|
#define M_PI 3.141592654
|
|
#endif
|
|
|
|
typedef char String[81];
|
|
|
|
|
|
/*********** flush the stdout and stderr output streams *************/
|
|
#ifndef flushout
|
|
#define flushout fflush(stdout)
|
|
#define flusherr fflush(stderr)
|
|
#endif
|
|
|
|
|
|
/********** Debugging functions *************************************/
|
|
#ifndef error_return
|
|
#define error_return( c ); {fprintf(stderr,c);return;}
|
|
#endif
|
|
|
|
|
|
/************************* floating-point random ********************/
|
|
#ifndef randf
|
|
#define randf() ((float) rand() / (float)RAND_MAX )
|
|
#endif
|
|
|
|
#ifndef SIGN
|
|
#define SIGN(x) ((x)>=0 ? 1 : -1)
|
|
#endif
|
|
|
|
|
|
/****************** conversion between degrees and radians **********/
|
|
#ifndef DEG2RAD
|
|
#define DEG2RAD(x) ((x)/180.0*M_PI)
|
|
#define RAD2DEG(x) ((x)/M_PI*180.0)
|
|
#endif
|
|
|
|
|
|
/***************** clamp a value to some fixed interval *************/
|
|
#ifndef CLAMP
|
|
#define CLAMP(x,lo,hi) {if ((x) < (lo)) {(x)=(lo);} else if((x) > (hi)) {(x)=(hi);}}
|
|
#endif
|
|
|
|
|
|
|
|
/************ check if a value lies within a closed interval *********/
|
|
#ifndef IN_BOUNDS
|
|
#define IN_BOUNDS( x, lo, hi ) ( (x) >= (lo) AND (x) <= (hi) )
|
|
#endif
|
|
|
|
|
|
/************ check if a 2D point lies within a 2D box ***************/
|
|
#ifndef PT_IN_BOX
|
|
#define PT_IN_BOX( x, y, lo_x, hi_x, lo_y, hi_y ) \
|
|
( IN_BOUNDS(x,lo_x,hi_x) AND IN_BOUNDS(y,lo_y,hi_y) )
|
|
#endif
|
|
|
|
/****** check if value lies on proper side of another value *****/
|
|
/*** if side is positive => proper side is positive, else negative **/
|
|
#ifndef CHECK_PROPER_SIDE
|
|
#define CHECK_PROPER_SIDE(x,val,side) ((side) > 0 ? (x) > (val) : (x) < (val))
|
|
#endif
|
|
|
|
|
|
/***** Small value when we want to do a comparison to 'close to zero' *****/
|
|
#ifndef FUDGE
|
|
#define FUDGE .00001
|
|
#endif
|
|
|
|
|
|
/******************* swap two values, using a temp variable *********/
|
|
#ifndef SWAP2
|
|
#define SWAP2(a,b,t) {t=a;a=b;b=t;}
|
|
#endif
|
|
|
|
#define VEC3_TO_ARRAY(v,a) a[0]=v[0], a[1]=v[1], a[2]=v[2]
|
|
|
|
#endif /* _STDINC_H_ */
|
|
|
|
|
|
|
|
|
|
|