cross

1 auto x = vec3(1,0,0);
2 auto y = vecD(0,1,0);
3 auto z = vecD(0,0,1);
4 
5 assert( eq( cross(x,y), z ) );
6 assert( eq( cross(y,z), x ) );
7 assert( eq( cross(y,x), -z ) );
8 assert( eq( cross(x,z), -y ) );
9 assert( eq( cross(z,x), y ) );
10 
11 auto fy = vecD(0,1,0,0);
12 assert( mustExcept({ auto fz = x * fy; }) );
13 auto cfy = vec4(0,1,0,0);
14 static assert( !__traits(compiles,x*cfy) );