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hprdh(hx1 [, hx2]), hx1 and hx2 REAL matrices representing complex data
  with Hermitian symmetry

Keywords: time series, complex arithmetic
hprdh(hx1, hx2) computes the element-wise complex product of elements in
the columns of REAL matrices or vectors hx1 and hx2, considered as
complex matrices in packed Hermitian form.  The result is also a complex
matrix in packed Hermitian form.

If hx1 or hx2 represents a single complex series (has 1 column), that
series is multiplied by all the series in the other arguments.  For
example, if hx1 is m by 1 and hx2 is m by 3, hprdh(hx1,hx2) is
equivalent to hprdh(hconcat(hx1,hx1,hx1),hx2).

hprdh(hx) is equivalent to hprdh(hx,hx).

See topic 'complex' for discussion of complex matrices in MacAnova.

See also hprdhj(), cprdc(), cprdcj().

Gary Oehlert 2003-01-15