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69 lines
1.9 KiB
C
69 lines
1.9 KiB
C
/* ----------------------------------------------------------------------
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* Project: CMSIS DSP Library
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* Title: arm_logsumexp_f32.c
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* Description: LogSumExp
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*
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* $Date: 23 April 2021
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* $Revision: V1.9.0
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*
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* Target Processor: Cortex-M and Cortex-A cores
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* -------------------------------------------------------------------- */
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/*
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* Copyright (C) 2010-2021 ARM Limited or its affiliates. All rights reserved.
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*
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* SPDX-License-Identifier: Apache-2.0
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*
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* Licensed under the Apache License, Version 2.0 (the License); you may
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* not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an AS IS BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "dsp/statistics_functions.h"
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#include <limits.h>
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#include <math.h>
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/**
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* @addtogroup LogSumExp
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* @{
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*/
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/**
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* @brief Dot product with log arithmetic
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*
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* Vectors are containing the log of the samples
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*
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* @param[in] *pSrcA points to the first input vector
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* @param[in] *pSrcB points to the second input vector
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* @param[in] blockSize number of samples in each vector
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* @param[in] *pTmpBuffer temporary buffer of length blockSize
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* @return The log of the dot product.
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*
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*/
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float32_t arm_logsumexp_dot_prod_f32(const float32_t * pSrcA,
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const float32_t * pSrcB,
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uint32_t blockSize,
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float32_t *pTmpBuffer)
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{
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float32_t result;
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arm_add_f32((float32_t*)pSrcA, (float32_t*)pSrcB, pTmpBuffer, blockSize);
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result = arm_logsumexp_f32(pTmpBuffer, blockSize);
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return(result);
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}
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/**
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* @} end of LogSumExp group
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*/
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