Total number of elements

Return the squared 2-norm of this vector

Returns whether the spectrum only contains valid (non-NaN, nonnegative) samples

\returns an equivalent rotation matrix * This function is added to be conform with the Transform class' naming scheme. */

change the user-definable callback, called after each iteration */

Return the best elapsed time in seconds */

* init() *****************************************************************************/

Sanitize docstrings and add custom failure explanation

\brief Retruns the z-translation by value. **/

* \brief Return the currently used number of items */

Square root variant that gracefully handles arguments < 0 that are due to roundoff errors