#ifndef VECMATH_H #define VECMATH_H double DOT(double a[3], double b[3]); void ADD(double out[3], double a[3], double b[3]); void SUB(double out[3], double a[3], double b[3]); void SCALE(double out[3], double v[3], double scalar); double length(double v[3]); void normalize(double out[3], double in[3]); #endif/*VECMATH_H*/