76 lines
2.1 KiB
C
76 lines
2.1 KiB
C
/* @(#) Multiplies two complex images. complex output is normalised to 1
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* @(#) Inputs can be complex double or complex float
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* @(#) Result (double complex or float complex) depends on inputs
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* @(#) Function im_cmulnorm() assumes that the both input files
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* @(#) are either memory mapped or in a buffer.
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* @(#) Images must have the same no of bands and must be complex
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* @(#) No check for overflow is carried out.
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* @(#)
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* @(#) int im_cmulnorm(in1, in2, out)
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* @(#) IMAGE *in1, *in2, *out;
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* @(#)
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* @(#) Returns 0 on success and -1 on error
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* @(#)
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*
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* Copyright: 1990, N. Dessipris.
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*
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* Author: Nicos Dessipris
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* Written on: 02/05/1990
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* Modified on:
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* 15/4/97 JC
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* - thrown away and redone in terms of im_multiply()
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* 9/7/02 JC
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* - im_sign() broken out, done in terms of that
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*/
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/*
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This file is part of VIPS.
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VIPS is free software; you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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/*
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These files are distributed with VIPS - http://www.vips.ecs.soton.ac.uk
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*/
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#ifdef HAVE_CONFIG_H
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#include <config.h>
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#endif /*HAVE_CONFIG_H*/
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#include <vips/intl.h>
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#include <vips/vips.h>
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#include <stdio.h>
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#include <stdlib.h>
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#ifdef WITH_DMALLOC
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#include <dmalloc.h>
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#endif /*WITH_DMALLOC*/
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int
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im_cmulnorm( IMAGE *in1, IMAGE *in2, IMAGE *out )
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{
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IMAGE *t1 = im_open_local( out, "im_cmulnorm:1", "p" );
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if( !t1 || im_multiply( in1, in2, t1 ) || im_sign( t1, out ) )
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return( -1 );
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return( 0 );
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}
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