double sin(), cos(), tan(), cotan();
double asin(), acos(), atan(), atan2();
double ldexp(), frexp(), modf();
double floor(), ceil(), fabs();
double log(), log10(), exp(), sqrt(), pow();
double sinh(), cosh(), tanh();

#define HUGE_VAL 1.79e+308
#define LOGHUGE	709.778
#define TINY_VAL 2.2e-308
#define LOGTINY	-708.396