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
27extern "C" {
28
29// disable under msvc
30#ifndef _MSC_VER
31
32TVM_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
36TVM_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
40TVM_DLL uint16_t __truncdfhf2(double a) {
41 return __truncXfYf2__<double, uint64_t, 52, uint16_t, uint16_t, 10>(a);
42}
43
44#else
45
46TVM_DLL uint16_t __gnu_f2h_ieee(float a) {
47 return __truncXfYf2__<float, uint32_t, 23, uint16_t, uint16_t, 10>(a);
48}
49
50TVM_DLL float __gnu_h2f_ieee(uint16_t a) {
51 return __extendXfYf2__<uint16_t, uint16_t, 10, float, uint32_t, 23>(a);
52}
53
54TVM_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