What is the most portable way to read and write the highest bit of an integer in C?
This is a Bloomberg interview question. I didn’t give best answer at that time. Can anyone please answer it?
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What is the most portable way to read and write the highest bit of an integer in C?
This is a Bloomberg interview question. I didn’t give best answer at that time. Can anyone please answer it?
If the type is unsigned, it’s easy:
For signed values, I know no way. If you find a way, it would answer several unanswered questions on SO:
C question: off_t (and other signed integer types) minimum and maximum values
Is there any way to compute the width of an integer type at compile-time?
Maybe others.