Hi , We currently rely on a custom implementation for 128-bit integer support in our cross-platform codebase, due to the absence of native int128/uint128 support in MSVC. Could you please confirm: Is there any plan or intent within Microsoft to support native 128-bit integer types (__int128, or similar) in MSVC in future versions? Is there any discussion or proposal in the C++ standards committee regarding standardized 128-bit integer support in upcoming versions of the language? Understanding this would help us make informed decisions about continuing to maintain our custom 128-bit abstraction layer vs. preparing for a potential transition to native support. Looking forward to your insights.

Future Support for int128 in MSVC and C++ Standard Roadmap

Abhishek K 0

Hi ,

We currently rely on a custom implementation for 128-bit integer support in our cross-platform codebase, due to the absence of native int128/uint128 support in MSVC.

Could you please confirm:

Is there any plan or intent within Microsoft to support native 128-bit integer types (__int128, or similar) in MSVC in future versions?
Is there any discussion or proposal in the C++ standards committee regarding standardized 128-bit integer support in upcoming versions of the language?

Understanding this would help us make informed decisions about continuing to maintain our custom 128-bit abstraction layer vs. preparing for a potential transition to native support.

Looking forward to your insights.

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Future Support for int128 in MSVC and C++ Standard Roadmap

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