| /* ---------------------------------------------------------------------- | |
| * 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. | |
| */ | |
| /** | |
| @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 | |
| @return none | |
| */ | |
| 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 | |
| */ | |