1 /* ----------------------------------------------------------------------
2  * Project:      CMSIS DSP Library
3  * Title:        arm_vlog_f64.c
4  * Description:  Fast vectorized log
5  *
6  * $Date:        10 August 2022
7  * $Revision:    V1.10.1
8  *
9  * Target Processor: Cortex-M and Cortex-A cores
10  * -------------------------------------------------------------------- */
11 /*
12  * Copyright (C) 2010-2021 ARM Limited or its affiliates. All rights reserved.
13  *
14  * SPDX-License-Identifier: Apache-2.0
15  *
16  * Licensed under the Apache License, Version 2.0 (the License); you may
17  * not use this file except in compliance with the License.
18  * You may obtain a copy of the License at
19  *
20  * www.apache.org/licenses/LICENSE-2.0
21  *
22  * Unless required by applicable law or agreed to in writing, software
23  * distributed under the License is distributed on an AS IS BASIS, WITHOUT
24  * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
25  * See the License for the specific language governing permissions and
26  * limitations under the License.
27  */
28 
29 #include "dsp/fast_math_functions.h"
30 #include "arm_common_tables.h"
31 
32 
arm_vexp_f64(const float64_t * pSrc,float64_t * pDst,uint32_t blockSize)33 ARM_DSP_ATTRIBUTE void arm_vexp_f64(
34     const float64_t * pSrc,
35     float64_t * pDst,
36     uint32_t blockSize)
37 {
38     uint32_t blkCnt;
39 
40     blkCnt = blockSize;
41 
42     while (blkCnt > 0U)
43     {
44         /* C = log(A) */
45 
46 
47         /* Calculate log and store result in destination buffer. */
48         *pDst++ = exp(*pSrc++);
49 
50         /* Decrement loop counter */
51         blkCnt--;
52     }
53 }
54