Hugo Hudson | b83ad73 | 2011-07-14 23:31:17 +0100 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2011 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 | #ifndef FRAMEWORKS_EX_VARIABLESPEED_JNI_MACROS_H_ |
| 18 | #define FRAMEWORKS_EX_VARIABLESPEED_JNI_MACROS_H_ |
| 19 | |
| 20 | #include <hlogging.h> |
| 21 | |
| 22 | inline float min(float a, float b) { |
| 23 | return (a < b) ? a : b; |
| 24 | } |
| 25 | |
| 26 | inline float max(float a, float b) { |
| 27 | return (a > b) ? a : b; |
| 28 | } |
| 29 | |
| 30 | template <class ForwardIterator> |
| 31 | ForwardIterator min_element(ForwardIterator first, ForwardIterator last) { |
| 32 | ForwardIterator lowest = first; |
| 33 | if (first == last) return last; |
| 34 | while (++first != last) |
| 35 | if (*first < *lowest) |
| 36 | lowest = first; |
| 37 | return lowest; |
| 38 | } |
| 39 | |
| 40 | // A macro to disallow the copy constructor and operator= functions |
| 41 | // This should be used in the private: declarations for a class |
| 42 | #define DISALLOW_COPY_AND_ASSIGN(TypeName) \ |
| 43 | TypeName(const TypeName&); \ |
| 44 | void operator=(const TypeName&) |
| 45 | |
| 46 | #define CHECK(x) { \ |
| 47 | if (!(x)) { \ |
| 48 | LOGE("assertion failed: " #x); \ |
| 49 | LOGE("file: %s line: %d", __FILE__, __LINE__); \ |
| 50 | int* frob = NULL; \ |
| 51 | *frob = 5; \ |
| 52 | } \ |
| 53 | } |
| 54 | |
| 55 | template <class Dest, class Source> |
| 56 | inline Dest bit_cast(const Source& source) { |
| 57 | // Compile time assertion: sizeof(Dest) == sizeof(Source) |
| 58 | // A compile error here means your Dest and Source have different sizes. |
| 59 | typedef char VerifySizesAreEqual [sizeof(Dest) == sizeof(Source) ? 1 : -1]; // NOLINT |
| 60 | |
| 61 | Dest dest; |
| 62 | memcpy(&dest, &source, sizeof(dest)); |
| 63 | return dest; |
| 64 | } |
| 65 | |
| 66 | #endif // FRAMEWORKS_EX_VARIABLESPEED_JNI_MACROS_H_ |