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A comment on Announcing Rust 1.20. Parent comment

Re:Announcing Rust 1.20 by knz42 on Thursday August 31, 2017 @07:40PM (#15144954)
No. ISO C has standardized "float" to 32 bits and "double" to 64 bits. The one that's platform-dependent is "long double".
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Re:Announcing Rust 1.20 by ComputerGuru on Friday September 01, 2017 @11:24AM (#15149190)
And, oxymoronically, plain, old long.

In particular, everything but MSVC treats long as 64 bits, but MSVC treats it as 32 bits for backwards compatibility.

However, I haven't used int or long or long long in ten years or so. Thanks to stdint.h support finally making its way to all platforms, it's exclusively sized types like int32_t and uint16_t for me.

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