I wanted the hexadecimal string for a large integer such as below:
(format "%x" 2738188573457603759)
2600000000f95c00 which is incorrect, it should be
The value of
most-positive-fixnum on my box is
0x1fffffffffffffff which is less than the number I'm supplying above.
As a user I'm a bit baffled what is happening. The manual indicates integers larger than this range are converted to a floating-point number which is a concern for precision but I suspect this is what is biting me here?
I should have known there was an issue with this number since normally I evaluate them directly using
eval-last-sexp and it didn't show the octal/hex variants.. :)
I wonder why Emacs Lisp doesn't support bignums, so precision would not be an issue?