Path: utzoo!mnetor!uunet!husc6!ut-sally!utah-cs!utah-gr!uplherc!esunix!sedwards
From: sedwards@esunix.UUCP (Scott Edwards)
Newsgroups: comp.arch
Subject: Type Conversions - (Was: Bad RISC)
Message-ID: <753@esunix.UUCP>
Date: 17 Mar 88 17:22:51 GMT
References: <2035@ho95e.ATT.COM>
Organization: Evans & Sutherland, Salt Lake City, Utah
Lines: 12

From article <2035@ho95e.ATT.COM>, by wcs@ho95e.ATT.COM (Bill.Stewart.<ho95c>):
> 	type-conversions float->double, char->int, short->int.
> On machines with signed characters, this does a sign-extend; on machines with
> unsigned it doesn't.  I assume unsigned-chars on a signed-char machine
> get promoted to unsigned for passing.

Since you brought this up, I've recently discovered that in the ANSI draft
that prototypes override the implicit type conversions, as in float will
not be promoted to double if the prototype declares it to be float.  Does
this mean that char would not be promoted to int?  If so what would that
to machines that have alignment restrictions and parameters are passed on
the stack?  Just curious.