From owner-freebsd-arch  Sat Oct 27  8:41:28 2001
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Date: Sun, 28 Oct 2001 01:40:22 +1000 (EST)
From: Bruce Evans <bde@zeta.org.au>
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To: John Baldwin <jhb@FreeBSD.ORG>
Cc: Dag-Erling Smorgrav <des@ofug.org>,
	Mike Smith <msmith@FreeBSD.ORG>, Bakul Shah <bakul@bitblocks.com>,
	Poul-Henning Kamp <phk@critter.freebsd.dk>,
	Peter Wemm <peter@wemm.org>, <arch@FreeBSD.ORG>,
	Matthew Dillon <dillon@apollo.backplane.com>
Subject: Re: 64 bit times revisited..
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On Fri, 26 Oct 2001, John Baldwin wrote:

> On 27-Oct-01 John Baldwin wrote:
> > You did read the e-mail from Garrett where either SUS or POSIX one requires
> > time_t to fit in a long?  I.e. sizeof(time_t) <= sizeof(long).  This means
> ...
> My bad.  C90 requires that time_t fit into a long according to Garrett.  POSIX
> requires it to be either an integer or floating point with the fractional part
> zero according to his mail as well.

C90 only requres that time_t is an arithmetic type (anything from signed
char to long double).  POSIX also specifies a (wrong) representation (one
that ensures that leap seconds can't possibly work).

Changing time_t to long double would be interesting.

Bruce


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