In C and older C++ the bits of the object representation of unsigned integer types other than `unsigned char` are divided into two groups: value bits and padding bits with the latter being optional
Questions tagged [padding-bit]
4 questions
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Padding bits in unsigned integers and bitwise operations in C89
I have a lot of code that performs bitwise operations on unsigned integers. I wrote my code with the assumption that those operations were on integers of fixed width without any padding bits. For example an array of 32-bit unsigned integers of which…
Anonymous Question Guy
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Are there any existing C implementations having padding bit in (un)signed integer representation?
As per C99, there maybe padding bits in signed int or unsigned int representation . So I wonder are there still any implementations having such outdated things?
l4rmbr
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Do padding bits need to be preserved?
The MSP430X architecture is an extension of the 16 bit MSP430 architecture to a 20 bit address space. This is done by expanding the processor's registers to 20 bit, keeping the least addressable unit at one octet (CHAR_BIT equals 8).
On this…
fuz
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How to check In C language whether an int variable contains a legal (not trap representation) value?
Context:
This is a followup to that other question of mine. I asked about both C and C++ and soon got an answer about C++ because last draft for C++20 explicitly requires that signed integer types use two's complement and that padding bits (if any)…
Serge Ballesta
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