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53 lines
1.7 KiB
C
53 lines
1.7 KiB
C
/**
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* Copyright 2013-2021 Software Radio Systems Limited
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*
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* This file is part of srsRAN.
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*
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* srsRAN is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as
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* published by the Free Software Foundation, either version 3 of
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* the License, or (at your option) any later version.
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*
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* srsRAN 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 Affero General Public License for more details.
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*
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* A copy of the GNU Affero General Public License can be found in
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* the LICENSE file in the top-level directory of this distribution
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* and at http://www.gnu.org/licenses/.
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*
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*/
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/******************************************************************************
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* File: cexptab.h
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*
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* Description: Utility module for generation of complex exponential tables.
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*
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* Reference:
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*****************************************************************************/
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#ifndef SRSRAN_CEXPTAB_H
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#define SRSRAN_CEXPTAB_H
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#include "srsran/config.h"
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#include <complex.h>
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#include <stdint.h>
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typedef struct SRSRAN_API {
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uint32_t size;
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cf_t* tab;
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} srsran_cexptab_t;
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SRSRAN_API int srsran_cexptab_init(srsran_cexptab_t* nco, uint32_t size);
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SRSRAN_API void srsran_cexptab_free(srsran_cexptab_t* nco);
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SRSRAN_API void srsran_cexptab_gen(srsran_cexptab_t* nco, cf_t* x, float freq, uint32_t len);
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SRSRAN_API void srsran_cexptab_gen_direct(cf_t* x, float freq, uint32_t len);
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SRSRAN_API void srsran_cexptab_gen_sf(cf_t* x, float freq, uint32_t fft_size);
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#endif // SRSRAN_CEXPTAB_H
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