ref: 140b307ed8b5f7681e2d0316fb1c867febb27d6c dir: /m_dotproduct.c/
#include "quakedef.h" float DotProduct(const vec3_t v1, const vec3_t v2) { return v1[0]*v2[0] + v1[1]*v2[1] + v1[2]*v2[2]; }