1 /*
2 * Copyright (C) 2012 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 #include "math_entrypoints.h"
18
19 namespace art {
20
art_l2d(int64_t l)21 extern "C" double art_l2d(int64_t l) {
22 return static_cast<double>(l);
23 }
24
art_l2f(int64_t l)25 extern "C" float art_l2f(int64_t l) {
26 return static_cast<float>(l);
27 }
28
29 /*
30 * Float/double conversion requires clamping to min and max of integer form. If
31 * target doesn't support this normally, use these.
32 */
art_d2l(double d)33 extern "C" int64_t art_d2l(double d) {
34 static const double kMaxLong = static_cast<double>(static_cast<int64_t>(0x7fffffffffffffffULL));
35 static const double kMinLong = static_cast<double>(static_cast<int64_t>(0x8000000000000000ULL));
36 if (d >= kMaxLong) {
37 return static_cast<int64_t>(0x7fffffffffffffffULL);
38 } else if (d <= kMinLong) {
39 return static_cast<int64_t>(0x8000000000000000ULL);
40 } else if (d != d) { // NaN case
41 return 0;
42 } else {
43 return static_cast<int64_t>(d);
44 }
45 }
46
art_f2l(float f)47 extern "C" int64_t art_f2l(float f) {
48 static const float kMaxLong = static_cast<float>(static_cast<int64_t>(0x7fffffffffffffffULL));
49 static const float kMinLong = static_cast<float>(static_cast<int64_t>(0x8000000000000000ULL));
50 if (f >= kMaxLong) {
51 return static_cast<int64_t>(0x7fffffffffffffffULL);
52 } else if (f <= kMinLong) {
53 return static_cast<int64_t>(0x8000000000000000ULL);
54 } else if (f != f) { // NaN case
55 return 0;
56 } else {
57 return static_cast<int64_t>(f);
58 }
59 }
60
art_d2i(double d)61 extern "C" int32_t art_d2i(double d) {
62 static const double kMaxInt = static_cast<double>(static_cast<int32_t>(0x7fffffffUL));
63 static const double kMinInt = static_cast<double>(static_cast<int32_t>(0x80000000UL));
64 if (d >= kMaxInt) {
65 return static_cast<int32_t>(0x7fffffffUL);
66 } else if (d <= kMinInt) {
67 return static_cast<int32_t>(0x80000000UL);
68 } else if (d != d) { // NaN case
69 return 0;
70 } else {
71 return static_cast<int32_t>(d);
72 }
73 }
74
art_f2i(float f)75 extern "C" int32_t art_f2i(float f) {
76 static const float kMaxInt = static_cast<float>(static_cast<int32_t>(0x7fffffffUL));
77 static const float kMinInt = static_cast<float>(static_cast<int32_t>(0x80000000UL));
78 if (f >= kMaxInt) {
79 return static_cast<int32_t>(0x7fffffffUL);
80 } else if (f <= kMinInt) {
81 return static_cast<int32_t>(0x80000000UL);
82 } else if (f != f) { // NaN case
83 return 0;
84 } else {
85 return static_cast<int32_t>(f);
86 }
87 }
88
89 } // namespace art
90