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swiener(3P)		    Sun Performance Library		   swiener(3P)

NAME
       swiener - perform Wiener deconvolution of two signals

SYNOPSIS
       SUBROUTINE SWIENER(N_POINTS, ACOR, XCOR, FLTR, EROP, ISW, IERR)

       INTEGER N_POINTS, ISW, IERR
       REAL ACOR(*), XCOR(*), FLTR(*), EROP(*)

       SUBROUTINE SWIENER_64(N_POINTS, ACOR, XCOR, FLTR, EROP, ISW, IERR)

       INTEGER*8 N_POINTS, ISW, IERR
       REAL ACOR(*), XCOR(*), FLTR(*), EROP(*)

   F95 INTERFACE
       SUBROUTINE WIENER(N_POINTS, ACOR, XCOR, FLTR, EROP, ISW, IERR)

       INTEGER :: N_POINTS, ISW, IERR
       REAL, DIMENSION(:) :: ACOR, XCOR, FLTR, EROP

       SUBROUTINE WIENER_64(N_POINTS, ACOR, XCOR, FLTR, EROP, ISW, IERR)

       INTEGER(8) :: N_POINTS, ISW, IERR
       REAL, DIMENSION(:) :: ACOR, XCOR, FLTR, EROP

   C INTERFACE
       #include <sunperf.h>

       void swiener(int n_points, float *acor, float *xcor, float *fltr, float
		 *erop, int *isw, int *ierr);

       void swiener_64(long n_points, float *acor, float *xcor,	 float	*fltr,
		 float *erop, long *isw, long *ierr);

PURPOSE
       swiener performs Wiener deconvolution of two signals.

ARGUMENTS
       N_POINTS (input)
		 On  entry,  the  number  of points in the input correlations.
		 Unchanged on exit.

       ACOR (input)
		 On entry, autocorrelation coefficients.  Unchanged on exit.

       XCOR (input)
		 On entry, cross-correlation coefficients.  Unchanged on exit.

       FLTR (output)
		 On exit, filter coefficients.

       EROP (output)
		 On exit, the prediction error.

       ISW (input)
		 On entry, if ISW .EQ. 0 then perform  spiking	deconvolution,
		 otherwise perform general deconvolution.  Unchanged on exit.

       IERR (output)
		 On  exit,  the	 deconvolution was successful iff IERR .EQ. 0,
		 otherwise there was an error.

				  6 Mar 2009			   swiener(3P)

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