/github/workspace/src/TransformFunctions/plp_cfft_f32_parallel.c

Functions

	Name
void	plp_cfft_f32_parallel(const plp_cfft_instance_f32 * S, const float32_t * pSrc, uint8_t ifftFlag, uint8_t bitReverseFlag, const uint32_t nPE) Floating-point FFT on complex input data (parallel version).

Functions Documentation

function plp_cfft_f32_parallel

void plp_cfft_f32_parallel(
    const plp_cfft_instance_f32 * S,
    const float32_t * pSrc,
    uint8_t ifftFlag,
    uint8_t bitReverseFlag,
    const uint32_t nPE
)

Floating-point FFT on complex input data (parallel version).

Parameters:

• S points to an instance of the floating-point FFT structure
• pSrc points to the complex data buffer of size 2*fftLen. Processing occurs in-place.
• ifftFlag flag that selects forwart (ifftFlag=0) or inverse (ifftFlag=1)
• bitReverseFlag flag that enables (bitReverseFlag=1) of disables (bitReverseFlag=0) bit reversal of output.
• nPE number of parallel processing units

Return: none

Source code

/* ----------------------------------------------------------------------
 * Project:      PULP DSP Library
 * Title:        plp_cfft_f32_parallel.c
 * Description:  Floating-point FFT on complex input data (parallel version)
 *
 * $Date:        4. August 2020
 * $Revision:    V0
 *
 * Target Processor: PULP cores with "F" support (wolfe, vega)
 * -------------------------------------------------------------------- */
/*
 * Copyright (C) 2020 ETH Zurich and University of Bologna. All rights reserved.
 *
 * Author: Giuseppe Tagliavini, University of Bologna
 *
 * SPDX-License-Identifier: Apache-2.0
 *
 * Licensed under the Apache License, Version 2.0 (the License); you may
 * not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an AS IS BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#include "plp_math.h"

void plp_cfft_f32_parallel( const plp_cfft_instance_f32 *S,
                            const float32_t *pSrc,
                            uint8_t ifftFlag,
                            uint8_t bitReverseFlag,
                            const uint32_t nPE) {

    if (hal_cluster_id() == ARCHI_FC_CID) {
        printf("Parallel processing supported only for cluster side\n");
        return;
    }
    plp_cfft_instance_f32_parallel arg = (plp_cfft_instance_f32_parallel){ S, pSrc, ifftFlag, bitReverseFlag, nPE };
    hal_cl_team_fork(nPE, plp_cfft_f32p_xpulpv2, (void *)&arg);

}

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Updated on 2023-03-01 at 16:16:33 +0000