module math;

double E = 2.7182818284590452354;
double PI = 3.141592653589793238;
double DEGTORAD = 3.141592653590/180;
double RADTODEG = 180/3.141592653590;

native double sin(double x);
native double cos(double x);
native double tan(double x);
native double asin(double x);
native double acos(double x);
native double atan(double x);
native double atan2(double y, double x); // = atan(y/x)
native double sinh(double x);
native double cosh(double x);
native double tanh(double x);
native double asinh(double x);
native double acosh(double x);
native double atanh(double x);

native double sqrt(double x);
native double exp(double x);  // e^x
native double exp2(double x); // 2^x
native double log(double x);  // base e
native double log10(double x);// base 10
native double log2(double x); // base 2

native double pow(double x, double y); // x^y
native double ipow(double x, int n);   // x^n (faster than pow)

native int abs(int x);
native double fabs(double x);
native double ceil(double x);
native double floor(double x);
native double round(double x); // rounds to nearest integer
native double trunc(double x);

native double hypot(double x, double y); // = sqrt(x*x+y*y)
native double cbrt(double x); // cube root

// Calculates polynomial a0 + x*a1 + x^2*a2 + x^3*a3 + ...
native double poly(double x, float[] A);