Boost C++ Libraries

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QVM: Quaternions, Vectors, Matrices

inverse(quat)

#include <boost/qvm/quat_operations.hpp>

namespace boost
{
    namespace qvm
    {
        //Only enabled if: is_quat<A>::value
        template <class A>
        typename deduce_quat<A>::type
        inverse( A const & a );
    }
}

Returns:

Computes the multiplicative inverse of a, or the conjugate-to-norm ratio.

Throws:

If the magnitude of a is zero, throws zero_magnitude_error.

Note:

If a is known to be unit length, conjugate is equivalent to inverse, yet it is faster to compute.