Re: SRFI 141 truncate and round
Taylor R Campbell 22 Sep 2016 07:56 UTC
In <http://srfi-email.schemers.org/srfi-141/msg/4211151>,
Sudarshan S Chawathe <xxxxxx@eip10.org> writes:
| Subject: SRFI 141 truncate and round
| The following claim in the description of the truncate family (and a
| similar one for the round family) confused me:
|
| However, by any divisor, the quotient of +1, 0, or -1 is 0; that is,
| three contiguous dividends by a common divisor share a common
| quotient.
|
| Unless I'm missing something, the above is not true if the divisor is 1
| or -1.
You're not missing something -- I was missing something! I guess it
should say `by any non-unit divisor', or clearer words to that effect.
| Minor issue: The sentence just before the Implementation section reads:
|
| Computer scientists will immediately recognize this as the interval of
| integers representable in two's-complement with (k - 1) bits.
|
| but "(k - 1) bits" should read "k bits" if I'm not mistaken.
Correct. I mixed up the exponent of 2 in the bounds with the number
of bits in the representation.