1 | /* |
2 | * Licensed to the Apache Software Foundation (ASF) under one |
3 | * or more contributor license agreements. See the NOTICE file |
4 | * distributed with this work for additional information |
5 | * regarding copyright ownership. The ASF licenses this file |
6 | * to you under the Apache License, Version 2.0 (the |
7 | * "License"); you may not use this file except in compliance |
8 | * with the License. You may obtain a copy of the License at |
9 | * |
10 | * http://www.apache.org/licenses/LICENSE-2.0 |
11 | * |
12 | * Unless required by applicable law or agreed to in writing, |
13 | * software distributed under the License is distributed on an |
14 | * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
15 | * KIND, either express or implied. See the License for the |
16 | * specific language governing permissions and limitations |
17 | * under the License. |
18 | */ |
19 | |
20 | /*! |
21 | * \file builtin_fp16.cc |
22 | * \brief Functions for conversion between fp32 and fp16 |
23 | */ |
24 | #include <builtin_fp16.h> |
25 | #include <tvm/runtime/c_runtime_api.h> |
26 | |
27 | extern "C" { |
28 | |
29 | // disable under msvc |
30 | #ifndef _MSC_VER |
31 | |
32 | TVM_DLL TVM_WEAK uint16_t __gnu_f2h_ieee(float a) { |
33 | return __truncXfYf2__<float, uint32_t, 23, uint16_t, uint16_t, 10>(a); |
34 | } |
35 | |
36 | TVM_DLL TVM_WEAK float __gnu_h2f_ieee(uint16_t a) { |
37 | return __extendXfYf2__<uint16_t, uint16_t, 10, float, uint32_t, 23>(a); |
38 | } |
39 | |
40 | TVM_DLL uint16_t __truncdfhf2(double a) { |
41 | return __truncXfYf2__<double, uint64_t, 52, uint16_t, uint16_t, 10>(a); |
42 | } |
43 | |
44 | #else |
45 | |
46 | TVM_DLL uint16_t __gnu_f2h_ieee(float a) { |
47 | return __truncXfYf2__<float, uint32_t, 23, uint16_t, uint16_t, 10>(a); |
48 | } |
49 | |
50 | TVM_DLL float __gnu_h2f_ieee(uint16_t a) { |
51 | return __extendXfYf2__<uint16_t, uint16_t, 10, float, uint32_t, 23>(a); |
52 | } |
53 | |
54 | TVM_DLL uint16_t __truncdfhf2(double a) { |
55 | return __truncXfYf2__<double, uint64_t, 52, uint16_t, uint16_t, 10>(a); |
56 | } |
57 | |
58 | #endif |
59 | } |
60 | |