printf("%" PRIx64 "\n", (uint64_t)(double)0x3243bcfe21ef4468ULL);

Nice explanation - thanks.
The integer values being output for the OP appeared to be 54-bit precision, and that threw me somewhat.
But I was excluding only the trailing zero bits from the precision count, while I should also have been excluding the leading zero bits.

It all makes sense now ... for some definition of "makes sense" ;-)

Cheers,
Rob

In reply to Re^2: Rounding off ? by syphilis
in thread Rounding off ? by Zomalaja

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