1 /* ----------------------------------------------------------------------
2 * Project: CMSIS DSP Library
3 * Title: arm_float_to_f64.c
4 * Description: Converts the elements of the floating-point vector to floating-point 64 bit vector
5 *
6 * $Date: 18 August 2022
7 * $Revision: V1.0.0
8 *
9 * Target Processor: Cortex-M and Cortex-A cores
10 * -------------------------------------------------------------------- */
11 /*
12 * Copyright (C) 2010-2022 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/support_functions.h"
30
31
32
33
34 /**
35 @ingroup groupSupport
36 */
37
38 /**
39 @addtogroup float_to_x
40 @{
41 */
42
43 /**
44 @brief Converts the elements of the floating-point vector to f64 vector.
45 @param[in] pSrc points to the f32 input vector
46 @param[out] pDst points to the f64 output vector
47 @param[in] blockSize number of samples in each vector
48 */
49
arm_float_to_f64(const float32_t * pSrc,float64_t * pDst,uint32_t blockSize)50 ARM_DSP_ATTRIBUTE void arm_float_to_f64(
51 const float32_t * pSrc,
52 float64_t * pDst,
53 uint32_t blockSize)
54
55 {
56 const float32_t *pIn = pSrc; /* Src pointer */
57 uint32_t blkCnt; /* loop counter */
58
59 /*
60 * Loop over blockSize number of values
61 */
62 blkCnt = blockSize;
63
64 while (blkCnt > 0U)
65 {
66
67 *pDst++ = (float64_t) * pIn++;
68 /*
69 * Decrement the loop counter
70 */
71 blkCnt--;
72 }
73 }
74
75
76
77 /**
78 @} end of float_to_x group
79 */
80
81
82
83
84
