ref: 73fca33b06e2ebb61473d295fdd39f8bbf57e4dd dir: /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]; }