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Program to subtract phase in 2 complex files.

 PROGRAM: cpxmult subtracts or adds phase of two complex float files

 USAGE: cpxmult infile1 infile2 [outfile [add==0]]

 infile[12] contain complex values a+ib
 outfile contains (a1+ib1)*conj(a2+ib2)

 If add=1 then phase is added (not conj).

 EXAMPLE: cpxmult cint.raw cint2.raw subtract.raw

Leijen 2009-04-14