#define M_PI 3.1415926

extern double floor(double x);
extern int abs(int j);
extern double pow(double x, double y);
extern double exp(double x);
extern double fmod(double x, double y);
extern double sqrt(double x);
extern double fabs(double x);
extern double sin(double x);
extern double cos(double x);

double frexp(double x, int *exp);

#define HUGE_VAL (__builtin_huge_val())

/* Unimplemented, but stubbed */
extern double acos(double x);
extern double asin(double x);
extern double atan2(double y, double x);
extern double ceil(double x);
extern double cosh(double x);
extern double ldexp(double a, int exp);
extern double log(double x);
extern double log10(double x);
extern double log2(double x);
extern double sinh(double x);
extern double tan(double x);
extern double tanh(double x);
extern double atan(double x);

extern double modf(double x, double *iptr);

extern double hypot(double x, double y);