#include <math.h>

typedef long double real_l_double;
typedef double real_double;
#define	double float
//#define real_double double
//#define	long double float

#define	sin	sinf
#define	cos	cosf
#define	sqrt	sqrtf
#define	atan2	atan2f
#define	floor	floorf
#define	ceil	ceilf
#define	pow	powf
#define	tan	tanf
#define	atan	atanf
#define round	roundf
#define exp	expf
#define log	logf
#define log10	log10f
#define fabs	fabsf
#define asin	asinf
#define fmod	fmodf
