[seqfan] Re: Function name for truncate-towards-zero integer divide?
mathar at strw.leidenuniv.nl
Thu Mar 17 15:13:37 CET 2011
> Date: Thu, 17 Mar 2011 07:04:04 -0700 (PDT)
> From: Ron Hardin
> Subject: [seqfan] Function name for truncate-towards-zero integer divide?
> What's the preferred name for the standard computer integer divide? (that
> truncates towards zero)
> integerpart() ?
In all mathematical libraries that I know it is
floor() is rounding to integer towards -infinity; the value is different
from trunc() if the argument is negative.
ceil() is rounding to integer towards +infinity,
round() is rounding to integer with undefined behaviour if half-way
between two integers.
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