在64位数据模型上指定64位无符号整数字面值 [英] Specifying 64-bit unsigned integer literals on 64-bit data models

问题描述

由于有各种类型的64位数据模型（LLP64 / IL32P64，LP64 / I32LP64，ILP64，SILP64），指定64位无符号整数文字的标准一致方式是什么？

As there are various types of 64-bit data models (LLP64/IL32P64, LP64/I32LP64, ILP64, SILP64), what is the standard conforming way of specifying 64-bit unsigned integer literals?

指定ULL的后缀是否足够？或者，我最终会导致字面量在一些数据模型上被解释为128位？

Would specifying the suffix of ULL be sufficient? Or would I end up causing the literal to be interpreted as 128-bit on some data models?

推荐答案

c $ c> < cstdint> /< stdint.h> ，如果你有它。这将给你：

You should use <cstdint> / <stdint.h>, if you have it. This will give you:

• uint64_t 是一个无符号整数类型， c> 是一个用于创建 uint64_t


• uint64_t is an unsigned integer type which is 64 bits in size
• UINT64_C() is a macro for creating constants of the type uint64_t, by having the macro append the proper suffix.

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