NAME
          DtMatrixGetRotation - Given a 4x4 matrix this routine will
          return the rotation value of the matrix.

     SYNOPSIS
          #include <Dt.h>

          int  DtMatrixGetRotation( float *matrix, float *xRot, float *yRot, float *zRot )

     DESCRIPTION
          The rotation component is returned by DtMatrixGetRotation().
          The rotations about the X, Y, and Z axes are given in
          radians.  The order of rotations is XYZ.

     DIAGNOSTICS
          DtMatrixGetRotation() returns one on success and zero on
          failure.

     SEE ALSO
          DtMatrixGetScale(3W)
          DtMatrixGetTranslation(3W)

     FILES
          Link with -lDtOMio