root / gnuradio-core / src / lib / filter / complex_dotprod_generic.cc @ 100e6105
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| 1 | /* -*- c -*- */
|
|---|---|
| 2 | /*
|
| 3 | * Copyright 2002 Free Software Foundation, Inc. |
| 4 | * |
| 5 | * This file is part of GNU Radio |
| 6 | * |
| 7 | * GNU Radio is free software; you can redistribute it and/or modify |
| 8 | * it under the terms of the GNU General Public License as published by |
| 9 | * the Free Software Foundation; either version 3, or (at your option) |
| 10 | * any later version. |
| 11 | * |
| 12 | * GNU Radio is distributed in the hope that it will be useful, |
| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 15 | * GNU General Public License for more details. |
| 16 | * |
| 17 | * You should have received a copy of the GNU General Public License |
| 18 | * along with GNU Radio; see the file COPYING. If not, write to |
| 19 | * the Free Software Foundation, Inc., 51 Franklin Street, |
| 20 | * Boston, MA 02110-1301, USA. |
| 21 | */ |
| 22 | |
| 23 | #ifdef HAVE_CONFIG_H
|
| 24 | #include <config.h> |
| 25 | #endif
|
| 26 | #include <gr_complex.h> |
| 27 | #include "gr_fir_scc_simd.h" |
| 28 | #include "complex_dotprod_generic.h" |
| 29 | |
| 30 | |
| 31 | void
|
| 32 | complex_dotprod_generic (const short *input, |
| 33 | const float *taps, unsigned n_2_complex_blocks, |
| 34 | float *result)
|
| 35 | {
|
| 36 | gr_complex sum0(0,0); |
| 37 | gr_complex sum1(0,0); |
| 38 | |
| 39 | do {
|
| 40 | const gr_complex tap0(taps[0], taps[1]); |
| 41 | const gr_complex tap1(taps[2], taps[3]); |
| 42 | |
| 43 | sum0 += (float)input[0] * tap0; |
| 44 | sum1 += (float)input[1] * tap1; |
| 45 | |
| 46 | input += 4;
|
| 47 | taps += 8;
|
| 48 | |
| 49 | } while (--n_2_complex_blocks != 0); |
| 50 | |
| 51 | |
| 52 | sum0 += sum1; |
| 53 | result[0] = sum0.real();
|
| 54 | result[1] = sum0.imag();
|
| 55 | } |