unsigned long long 除法的实现 [英] implementation of unsigned long long division

问题描述

在哪个文件中可以找到unsigned long long Division(ulonglong除以ulong)的实现?(微软 VC++ 2010)

Which file can I find the implementation of unsigned long long division (ulonglong divided by ulong) in? (MS VC++ 2010)

推荐答案

假设您使用的是默认安装目录，它应该在附近:

Assuming you used the default installation directory, it should be somewhere around:

C:\Program Files (x86)\Microsoft Visual Studio 9.0\VC\crt\src\intel\ulldiv.asm

C:\Program Files (x86)\Microsoft Visual Studio 9.0\VC\crt\src\intel\ulldiv.asm

如果您使用的是 32 位版本的 Windows，那(可能)是 C:\program files 而不是 c:\program files (x86)代码>.尽管有注释，这段代码实际上是用于无符号长整除法，而不仅仅是无符号长整除法(即，它需要 64 位操作数，而不是 32 位).

If you're using a 32-bit edition of Windows, that'll (probably) be C:\program files instead of c:\program files (x86). Despite the comments, this code is really for an unsigned long long divide, not just unsigned long divide (i.e., it takes 64-bit operands, not 32-bit).

我必须检查以确保，但我相信编译器可以/将在启用内在函数时为除法生成内联代码.当然，64 位编译器无论如何都会生成内联代码.

I'd have to check to be sure, but I believe the compiler can/will generate inline code for the division when intrinsics are enabled. Of course, a 64-bit compiler will generate inline code in any case.

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