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 @return none
52
53 */
54
55
arm_f64_to_f16(const float64_t * pSrc,float16_t * pDst,uint32_t blockSize)56 void arm_f64_to_f16(
57 const float64_t * pSrc,
58 float16_t * pDst,
59 uint32_t blockSize)
60 {
61 const float64_t *pIn = pSrc; /* Src pointer */
62 uint32_t blkCnt; /* loop counter */
63
64 /*
65 * Loop over blockSize number of values
66 */
67 blkCnt = blockSize;
68
69 while (blkCnt > 0U)
70 {
71
72 *pDst++ = (float16_t) * pIn++;
73 /*
74 * Decrement the loop counter
75 */
76 blkCnt--;
77 }
78 }
79 /**
80 @} end of f64_to_x group
81 */
82
83 #endif /* #if defined(ARM_FLOAT16_SUPPORTED) */
84