Basically, print $t produces 14720 when sprintf produces 14719.

My guess: printf will round off to get what you expected, while sprintf %d does an int() which simply truncates. If the value were actually 14719.999999999999997, then that would explain the difference.

Note that floating point binary can't hold 1/10 exactly any more than decimal can hold 1/3 exactly.

Try using %.15f on such a value and see closer too what's really stored.

In reply to Re: floating points and sprintf by John M. Dlugosz
in thread floating points and sprintf by kennethwlangley

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