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Are bit fields portable?

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Professional Tutor with 15 years of experience.

Yes, This makes the representation compiler-independent. i.e. they are portable, but what they do may not necessarily be exactly what a person actually wanting to manipulate individual bits may need. Bit fields are standard language feature. They will compile in all C compilers.
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Computer Wizard

Bitfields are not quite as portable as you think, as "C gives no guarantee of the ordering of fields within machine words" Ignoring that, used correctly, either method is safe. Both methods also allow symbolic access to integral variables. You can argue that the bitfield method is easier to write,...
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Bitfields are not quite as portable as you think, as "C gives no guarantee of the ordering of fields within machine words" Ignoring that, used correctly, either method is safe. Both methods also allow symbolic access to integral variables. You can argue that the bitfield method is easier to write, but it also means more code to review. read less
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Trainer

This makes the representation compiler-independent. i.e. they are portable, but what they do may not necessarily be exactly what a person actually wanting to manipulate individual bits may need. Bit fields are standard language feature. They will compile in all C compilers.
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Computer & Maths Professor

They are portable in that sense of the term. Your code is well-formed and will compile in all C compilers as well. Statements like "bit-fields are not portable" usually mean that the physical layout of bit-fields in memory might differ from implementation to implementation (i.e. from one compiler to...
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