1 /* ----------------------------------------------------------------------
2 * Project: CMSIS DSP Library
3 * Title: arm_f64_to_f16.c
4 * Description: Converts the elements of the 64 bit floating-point vector to 16 bit floating-point 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_f16.h"
30
31 #if defined(ARM_FLOAT16_SUPPORTED)
32
33 /**
34 @ingroup groupSupport
35 */
36
37 /**
38 * @defgroup f64_to_x Convert 64-bit floating point value
39 */
40
41 /**
42 @addtogroup f64_to_x
43 @{
44 */
45
46 /**
47 @brief Converts the elements of the f64 vector to f16 vector.
48 @param[in] pSrc points to the f64 input vector
49 @param[out] pDst points to the f16 output vector
50 @param[in] blockSize number of samples in each vector
51
52 */
53
54
arm_f64_to_f16(const float64_t * pSrc,float16_t * pDst,uint32_t blockSize)55 void arm_f64_to_f16(
56 const float64_t * pSrc,
57 float16_t * pDst,
58 uint32_t blockSize)
59 {
60 const float64_t *pIn = pSrc; /* Src pointer */
61 uint32_t blkCnt; /* loop counter */
62
63 /*
64 * Loop over blockSize number of values
65 */
66 blkCnt = blockSize;
67
68 while (blkCnt > 0U)
69 {
70
71 *pDst++ = (float16_t) * pIn++;
72 /*
73 * Decrement the loop counter
74 */
75 blkCnt--;
76 }
77 }
78 /**
79 @} end of f64_to_x group
80 */
81
82 #endif /* #if defined(ARM_FLOAT16_SUPPORTED) */
83
