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/* ----------------------------------------------------------------------
* Project: CMSIS DSP Library
* Title: arm_cmplx_mag_squared_f64.c
* Description: Floating-point complex magnitude squared
*
* $Date: 13 September 2021
* $Revision: V1.10.0
*
* Target Processor: Cortex-M and Cortex-A cores
* -------------------------------------------------------------------- */
/*
* Copyright (C) 2010-2021 ARM Limited or its affiliates. All rights reserved.
*
* 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 "arm_compiler_specific.h"
#include "dsp/complex_math_functions.h"
/**
@ingroup groupCmplxMath
*/
/**
@addtogroup cmplx_mag_squared
@{
*/
/**
@brief Floating-point complex magnitude squared.
@param[in] pSrc points to input vector
@param[out] pDst points to output vector
@param[in] numSamples number of samples in each vector
*/
ARM_DSP_ATTRIBUTE void arm_cmplx_mag_squared_f64(
const float64_t * pSrc,
float64_t * pDst,
uint32_t numSamples)
{
uint32_t blkCnt; /* Loop counter */
float64_t real, imag; /* Temporary input variables */
/* Initialize blkCnt with number of samples */
blkCnt = numSamples;
while (blkCnt > 0U)
{
/* C[0] = (A[0] * A[0] + A[1] * A[1]) */
real = *pSrc++;
imag = *pSrc++;
/* store result in destination buffer. */
*pDst++ = (real * real) + (imag * imag);
/* Decrement loop counter */
blkCnt--;
}
}
/**
@} end of cmplx_mag_squared group
*/
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