** Sort numbers into complex conjugate pairs. **

** Y = CPLXPAIR(X) rearranges the elements of vector X so that **

** complex numbers are collected into matched pairs of complex **

** conjugates. The pairs are ordered by increasing real part. **

** Any purely real elements are placed after all the complex pairs. **

** Y = CPLXPAIR(X,TOL) uses a relative tolerance of TOL for **

** comparison purposes. The default is TOL = 100* EPS . **

** **