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_ 67
