Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP
Posting-Version: version B 2.10.1 6/24/83; site pur-phy.UUCP
Path: utzoo!linus!decvax!harpo!ihnp4!inuxc!pur-ee!CS-Mordred!Pucc-H:Physics:crl
From: crl@pur-phy.UUCP (Charles LaBrec)
Newsgroups: net.lang.c
Subject: Re: i = i * f  *vs*  i *= f (Not a bug)
Message-ID: <1298@pur-phy.UUCP>
Date: Tue, 17-Apr-84 03:32:32 EST
Article-I.D.: pur-phy.1298
Posted: Tue Apr 17 03:32:32 1984
Date-Received: Wed, 18-Apr-84 01:15:59 EST
References: <2310@ecsvax.UUCP>
Organization: Purdue University Physics Dept.
Lines: 13

However, pulling out the trusty K&R says (pg 191, Sec 7.14)

	The behavior of an expression of the form E1 op= E2 may be
	inferred by taking it as equivalent to E1 = E1 op (E2) ....

So i *= .2 should be evaluated as i = i * .2, which is a very legal
mixed mode operation where i gets converted to a double, multiplied
by .2, truncated to an integer, and assigned to i.

Charles LaBrec
UUCP:		pur-ee!Physics:crl, purdue!Physics:crl
INTERNET:	crl @ pur-phy.UUCP