QPMS
Electromagnetic multiple scattering library and toolkit.

3D improper rotations represented as a quaternion and a sign of the determinant. More...
#include <qpms_types.h>
Data Fields  
qpms_quat_t  rot 
Quaternion representing the rotation part.  
short  det 
Determinant of the transformation (valid values are 1 (rotation) or 1 (improper rotation)  
3D improper rotations represented as a quaternion and a sign of the determinant.
See quaternions.h for "methods".