Path: utzoo!mnetor!uunet!pdn!alan From: alan@pdn.UUCP (Alan Lovejoy) Newsgroups: comp.lang.modula2 Subject: Re: MathLib0 procedures Message-ID: <3099@pdn.UUCP> Date: 10 May 88 01:58:27 GMT References: <8805091402.AA23129@harris.cis.ksu.edu> Reply-To: alan@pdn.UUCP (0000-Alan Lovejoy) Organization: Paradyne Corporation, Largo, Florida Lines: 30 In article <8805091402.AA23129@harris.cis.ksu.edu> Info-Modula2 Distribution Listwrites: >Correct. That's all our implementation does: "RETURN (FLOAT(x));" But he wrote "FLOAT(CARDINAL(x))", which is not necessarily equivalent! >>> PROCEDURE entier(x:REAL): INTEGER; >>>just another form of INTEGER(TRUNC(x)) ? > >This one is a little different. I understand it to be the "nearest integer >to REAL x". So I guess it is a TRUNC with rounding. Any REAL number with >a fractional part >= .5 is rounded up to the next highest integer. >Anything < .5 is equivalent to TRUNC(x). In PIM2/3rd Ed., pg. 162, Wirth states: TRUNC(x) real number x truncated to its integral part (of type CARDINAL). Wirth does not define "entier". But when I researched it back in 1984, If found it to be a europeanism for "floor", which does no rounding. Now if I could just remember where I found that piece of information... -- Alan Lovejoy; alan@pdn; 813-530-8241; Paradyne Corporation: Largo, Florida. Disclaimer: Do not confuse my views with the official views of Paradyne Corporation (regardless of how confusing those views may be). Motto: Never put off to run-time what you can do at compile-time!