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[Discuss-gnuradio] complex arithmetic
From: |
David Carr |
Subject: |
[Discuss-gnuradio] complex arithmetic |
Date: |
Tue, 17 Aug 2004 00:00:53 -0500 |
User-agent: |
Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.7.2) Gecko/20040815 MultiZilla/1.6.4.0b |
Why does this die with:
gr_complex_mag.cc: In member function `virtual int gr_complex_mag::work(int,
gr_vector_const_void_star&, gr_vector_void_star&)':
gr_complex_mag.cc:55: error: `cabs' undeclared (first use this function)
I've included <complex> and I think that the cabs function should be
there. The conj function works. What am I missing?
Thanks,
David Carr
The file:
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <complex>
#include <gr_complex_mag.h>
#include <gr_io_signature.h>
gr_complex_mag::gr_complex_mag ()
: gr_sync_block ("complex_mag",
gr_make_io_signature (1, 1, sizeof (gr_complex)),
gr_make_io_signature (1, 1, sizeof (float)))
{
}
gr_complex_mag_sptr
gr_make_complex_mag ()
{
return gr_complex_mag_sptr (new gr_complex_mag ());
}
int
gr_complex_mag::work (int noutput_items,
gr_vector_const_void_star &input_items,
gr_vector_void_star &output_items)
{
gr_complex *in = (gr_complex *) input_items[0];
float *out = (float *) output_items[0];
for (int i = 0; i < noutput_items; i++){
//gr_complex product = in[i] * conj (in[i-1]);
float ans = cabs (in[i]);
//out[i] = conj(input_items[i]);
}
return noutput_items;
}
- [Discuss-gnuradio] complex arithmetic,
David Carr <=