标准:signedchar、short、int、long、longlong(C99 起) 位精确:_BitInt(N)其中 N 为整数常量表达式,指定用于表示该类型的位数,包括符号位。每个 N 值均代表一种独立类型。 (C23 起) 扩展:实现定义,例如__int128 (C99 起) 无符号整数类型 标准:_Bool、(C99 起)unsignedchar、unsignedshort、unsignedint、unsi...
int longint longlongint(C++11 起) int unsignedint longint unsignedlongint longlongint(C++11 起) unsignedlonglongint(C++11 起) u或U unsignedint unsignedlongint unsignedlonglongint(C++11 起) unsignedint unsignedlongint unsignedlonglongint(C++11 起) ...
If the value of the integer constant is too big to fit in any of the types allowed by suffix/base combination,it does not have suffixeswb,WB,uwb, orUWB(since C23)and the compiler supports extended integer types (such as__int128), the constant may be given the extended integer type; ...
If the value of the integer literalthat does not havesize-suffix(since C++23)is too big to fit in any of the types allowed by suffix/base combination and the compiler supports an extended integer type (such as__int128) which can represent the value of the literal, the literal may be ...
Epoll 关键数据结构 前面提到Epoll 速度快和其数据结构密不可分,其关键数据结构就是: struct epoll_event { __uint32_tevents; // Epoll events epoll_data_tdata; // User data variable }; typedef union epoll_data { void *ptr; int fd; __uint32_t u32; __uint64_t u64; } epoll_data_t;...
法一:int k=~0; if((unsigned int)k >63356) cout<<"at least 32bits"<<endl; else cout<<"16 bits"<<endl; 法二://32为系统 int i=65536; cout<<i<<endl; int j=65535; cout<<j<<endl; 大or小 1) Little-Endian就是低位字节排放在内存的低地址端,高位字节排放在内存的高地址端。 2) ...
int 4 bytes -231 到231-1 float 4 bytes N/A double 8 bytes N/A char 1 byte -128 到 127 bool 1 byte true / false void N/A N/A wchar_t 2到 4 bytes 1 个宽字符 用户输入 int num; std::cout << "Type a number: "; std::cin >> num; std::cout << "You entered " << ...
128 // todo: LSB+SWAP? lol, that's MSB? 129 msg.setShortValue(SWAP_UINT16(Sensor::getOrZero(SensorType::Rpm) * 4), 0); 130 msg.setShortValue(0xFFFF, 2); 131 // todo: LSB+SWAP? lol, that's MSB? 132 msg.setShortValue(SWAP_UINT16((int )(100 * kph + 10000)), 4); 13...
111 constexpr blt_int32u rxMsgId = BOOT_COM_CAN_RX_MSG_ID; 112 blt_bool result = BLT_FALSE; 113 CANRxFrame frame; 114 115 if (MSG_OK != canReceiveTimeout(&OPENBLT_CAND, CAN_ANY_MAILBOX, &frame, TIME_IMMEDIATE)) { 116 // no message was waiting 117 return BLT_FALSE; 118 }...
int 4 bytes -231 到231-1 float 4 bytes N/A double 8 bytes N/A char 1 byte -128 到 127 bool 1 byte true / false void N/A N/A wchar_t 2到 4 bytes 1 个宽字符 用户输入 int num; std::cout << "Type a number: "; std::cin >> num; std::cout << "You entered " <...