S
serrand
Hello all,
is there a way in order to write binary numbers as hexa or octal in c ?
Xavier
is there a way in order to write binary numbers as hexa or octal in c ?
Xavier
serrand said:Hello all,
is there a way in order to write binary numbers as hexa or octal in c ?
Can you give me an example of a macro to do this? Thanks.Robert said:I assume you are asking whether C supports a binary constant notation
like it does for octal and hexadecimal numbers, the answer is no. It
is not too difficult to create macros that allow you to do this though.
Robert Gamble
Joe said:Can you give me an example of a macro to do this? Thanks.
Robert said:Absolutely. I have seen a couple of variations (which I can't seem to
locate right now)
Robert Gamble said:Absolutely. I have seen a couple of variations (which I can't seem to
locate right now) but the below example gets the gist of the technique
across:
#include <stdio.h>
#define A(x) 0 ## x ## ULL
#define B(x) ((A(x) & 01ULL) + (2*(!!((A(x) & 010ULL)))) + (4*(!!((A(x)
& 0100ULL)))))
int main (void) {
printf("%llu\n", B(110));
return 0;
}
This version handles up to 3 digit binary numbers, extending it to
handle more is trivial.
This isn't perfect as it can only represent a range limited by the
highest octal representation which is why the ULL modifier is there but
it is good enough for some.
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