1 /*
2 * Copyright (c) 2020-2021 Arm Limited.
3 *
4 * SPDX-License-Identifier: MIT
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a copy
7 * of this software and associated documentation files (the "Software"), to
8 * deal in the Software without restriction, including without limitation the
9 * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
10 * sell copies of the Software, and to permit persons to whom the Software is
11 * furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be included in all
14 * copies or substantial portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
19 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
22 * SOFTWARE.
23 */
24 #if defined(__ARM_FEATURE_FP16_VECTOR_ARITHMETIC) && defined(ENABLE_FP16_KERNELS)
25
26 #include "src/common/utils/Validate.h"
27 #include "src/core/NEON/NEMath.h"
28
29 #include <arm_neon.h>
30 #include <cmath>
31 #include <cstddef>
32
33 namespace arm_compute
34 {
35 namespace cpu
36 {
37 constexpr int step = 8;
38
fp16_neon_floor(const void * src,void * dst,int len)39 void fp16_neon_floor(const void *src, void *dst, int len)
40 {
41 ARM_COMPUTE_ASSERT_NOT_NULLPTR(src);
42 ARM_COMPUTE_ASSERT_NOT_NULLPTR(dst);
43 ARM_COMPUTE_ASSERT(len >= 0);
44
45 auto psrc = static_cast<const __fp16 *>(src);
46 auto pdst = static_cast<__fp16 *>(dst);
47
48 for(; len >= step; len -= step)
49 {
50 vst1q_f16(pdst, vfloorq_f16(vld1q_f16(psrc)));
51 psrc += step;
52 pdst += step;
53 }
54
55 for(; len > 0; --len)
56 {
57 *pdst = std::floor(*psrc);
58 ++psrc;
59 ++pdst;
60 }
61 }
62 } // namespace cpu
63 } // namespace arm_compute
64 #endif /* defined(__ARM_FEATURE_FP16_VECTOR_ARITHMETIC) && defined(ENABLE_FP16_KERNELS) */
65