1 /* ----------------------------------------------------------------------
2 * Project: CMSIS DSP Library
3 * Title: arm_logsumexp_f32.c
4 * Description: LogSumExp
5 *
6 *
7 * Target Processor: Cortex-M and Cortex-A cores
8 * -------------------------------------------------------------------- */
9 /*
10 * Copyright (C) 2010-2019 ARM Limited or its affiliates. All rights reserved.
11 *
12 * SPDX-License-Identifier: Apache-2.0
13 *
14 * Licensed under the Apache License, Version 2.0 (the License); you may
15 * not use this file except in compliance with the License.
16 * You may obtain a copy of the License at
17 *
18 * www.apache.org/licenses/LICENSE-2.0
19 *
20 * Unless required by applicable law or agreed to in writing, software
21 * distributed under the License is distributed on an AS IS BASIS, WITHOUT
22 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
23 * See the License for the specific language governing permissions and
24 * limitations under the License.
25 */
26
27 #include "arm_math.h"
28 #include <limits.h>
29 #include <math.h>
30
31
32 /**
33 * @addtogroup groupStats
34 * @{
35 */
36
37
38 /**
39 * @brief Dot product with log arithmetic
40 *
41 * Vectors are containing the log of the samples
42 *
43 * @param[in] *pSrcA points to the first input vector
44 * @param[in] *pSrcB points to the second input vector
45 * @param[in] blockSize number of samples in each vector
46 * @param[in] *pTmpBuffer temporary buffer of length blockSize
47 * @return The log of the dot product.
48 *
49 */
50
51
arm_logsumexp_dot_prod_f32(const float32_t * pSrcA,const float32_t * pSrcB,uint32_t blockSize,float32_t * pTmpBuffer)52 float32_t arm_logsumexp_dot_prod_f32(const float32_t * pSrcA,
53 const float32_t * pSrcB,
54 uint32_t blockSize,
55 float32_t *pTmpBuffer)
56 {
57 float32_t result;
58 arm_add_f32((float32_t*)pSrcA, (float32_t*)pSrcB, pTmpBuffer, blockSize);
59
60 result = arm_logsumexp_f32(pTmpBuffer, blockSize);
61 return(result);
62 }
63
64 /**
65 * @} end of groupStats group
66 */
67