math_macro.h

basic mathematic classes used for math programming

#define TRUE    1
#define FALSE   0

#define MAX(x,y) ( ((x)>(y)) ? (x) : (y) )
#define MIN(x,y) ( ((x)<(y)) ? (x) : (y) )
#define ABS(x)   ( ((x)>0.0) ? (x) :-(x) )
#define ACOS(x)  ( ((x)>1.0) ? (0) : ( ((x)<-1.0) ? (M_PI) : (acos(x)) ) )
#define ASIN(x)  ( ((x)>1.0) ? (M_PI/2.0) : ( ((x)<-1.0) ? (-M_PI/2.0) : (asin(x)) ) )
#define SQR(x)   ( (x)*(x) )
#define SHIFT(a,b,c,d) (a)=(b);(b)=(c);(c)=(d);
#define SIGN(a,b) ((b) >= 0.0 ? fabs(a) : -fabs(a))