Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!ames!apple!motcsd!hpda!hpcuhb!hpcllla!hpclisp!hpclcdb!cdb
From: cdb@hpclcdb.HP.COM (Carl Burch)
Newsgroups: comp.lang.fortran
Subject: Re: fortran statement
Message-ID: <6690027@hpclcdb.HP.COM>
Date: 30 Jul 89 20:18:30 GMT
References: <28605@beta.lanl.gov>
Organization: Hewlett-Packard Calif. Language Lab
Lines: 22


> IF(MOD(N,2).EQ.0)THEN

> I'm new at the language and was looking over a program written as an
> example and became quite confused when I read MOD  what does it signify
> in this statement there is no other reference to MOD...


     Short answer : This is FORTRAN 77 for (in Pascal) :

	  IF odd(N) THEN


     Longer answer :  MOD is the modulus (like remainder if all arguments
     are positive) function.  It is an intrinsic function in FORTRAN 77, so
     no other references are necessary.  The remainder of any even positive
     number divided by two is zero.  I hedge by restricting the above to 
     the positive case because what happens when either argument is negative
     is the subject of many theological arguments I do not desire to join.

						Carl Burch
						HP Data and Languages Division