NAME
          DtMatrixGetScale - Given a 4x4 matrix this routine will
          return the scale value of the matrix.

     SYNOPSIS
          #include <Dt.h>

          int  DtMatrixGetScale( float *matrix, float *xScale, float *yScale, float *zScale )

     DESCRIPTION
          DtMatrixGetScale() decomposes matrix into scaling, rotation,
          and translation components. The scale component is returned
          by DtMatrixGetScale()

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

     SEE ALSO
          DtMatrixGetRotation(3W)
          DtMatrixGetTranslation(3W)

     FILES
          Link with -lDtOMio