usigned int => size_t ptrdiff_t的意思是“指针之差”,即两个地址运算之差,对应有符号整型;size_t对应无符号整型,他们的宽度是依赖于编译平台的,在32位平台上是32位的,在64位平台是64位的,他们存在于std库中,用宏检查平台,并typedef自对应平台的整型。 结论: 在单纯的数据上(不会参与地址运算的变量)32位和64位运算
I am migrating C++ 32 bit application to 64 bit. In this to convert size_t to int I am just type casting like this int nInLen = (int) strlen( lpstrAddrIn ); Is it safe or should I declare nInLen as size_t? Please suggest anyone your ideas. Thanks. All replies (2) Wednesday,...
Size of various datatypes on Windows 64 bit platform - specifically sizeof(int) 本问题已经有最佳答案,请猛点这里访问。 我使用Microsoft Visual Studio 2012作为我的IDE环境。 显然,我的机器正在运行Windows 7 x64,并且我正在尝试开发64位程序。 但是请注意,该编译器是Nvidia的nvcc(我已经确认我下载了64位...
All i want to do is print the size of integer on my machine, without really looking into limits.h. The sizeof function returns asize_ttype. Try using%zuas the conversion specifier instead of%d. printf("The size of integer is %zun", sizeof(n)); To clarify, use%zuif your compiler s...
所以,int,long int,short int的宽度都可能随编译器而异。但有几条铁定的原则(ANSI/ISO制订的): 1sizeof(shortint)<=sizeof(int)2sizeof(int)<=sizeof(longint)3shortint至少应为16位(2字节)4longint至少应为32位。 unsigned 是无符号的意思。
The code which we submit are being tested on 64bit or 32bit machines ? Does it make any difference in a computationally intensive code if 32 bit or 64 bit is used. CODE : #include<ctime>#include<iostream>usingnamespacestd;voidtest(intend){clock_tstartInt=clock();inta=0;for(inti=0;i...
Now in case of 64 bit machines, if u want to make your code 64 bit clean, you should write the datatype of args as size_t There are very few references which actually tell you abt the size of size_t on a 64 bit machine... ...
(normal execution) VM Mutex/Monitor currently owned by a thread: None heap address: 0x00000000f8000000, size: 128 MB, Compressed Oops mode: 32-bit Narrow klass base: 0x0000000000000000, Narrow klass shift: 3 Compressed class space size: 1073741824 Address: 0x0000000100000000 Heap: PSYoungGen ...
参考stackoverflowSize of a byte in memory - Java,注意标注高亮的部分。 更多对基本类型的描述,可以查看Primitive Data Types 支持更少的 boolean 说完byte、char、short,我们再来看看对于 boolean 的描述,摘取部分信息2.3.4. The boolean Type: Although the Java Virtual Machine defines a boolean type, it on...
Kinematic modelling machine for rock slope studies. Short contribution : Teme, S C Int J MIn Geol Engng V5, N1, March 1987, P75–81doi:10.1016/0148-9062(87)92579-4NoneInternational Journal of Rock Mechanics & Mining Sciences & Geomechanics Abstracts...