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44 lines
1.4 KiB
C
44 lines
1.4 KiB
C
/*
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* Copyright (c) 2013, Ismael Gomez-Miguelez <gomezi@tcd.ie>.
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* This file is part of OSLD-lib (http://https://github.com/ismagom/osld-lib)
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*
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* OSLD-lib 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 3 of the License, or
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* (at your option) any later version.
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*
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* OSLD-lib 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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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with OSLD-lib. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef NCO_
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#define NCO_
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#include <complex.h>
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typedef struct {
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int size;
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float *cost;
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float *sint;
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}nco_t;
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void nco_init(nco_t *nco, int size);
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void nco_destroy(nco_t *nco);
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float nco_sin(nco_t *nco, float phase);
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float nco_cos(nco_t *nco, float phase);
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void nco_sincos(nco_t *nco, float phase, float *sin, float *cos);
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_Complex float nco_cexp(nco_t *nco, float arg);
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void nco_sin_f(nco_t *nco, float *x, float freq, int len);
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void nco_cos_f(nco_t *nco, float *x, float freq, int len);
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void nco_cexp_f(nco_t *nco, _Complex float *x, float freq, int len);
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void nco_cexp_f_direct(_Complex float *x, float freq, int len);
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#endif
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