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From: gwyn@smoke.brl.mil (Doug Gwyn)
Newsgroups: comp.lang.c
Subject: Re: # to the nth power
Message-ID: <14379@smoke.brl.mil>
Date: 7 Nov 90 11:27:22 GMT
References: <522@ssp9.idca.tds.philips.nl> <1990Nov2.182217.13958@NCoast.ORG> <ENAG.90Nov3145415@hild.ifi.uio.no>
Organization: U.S. Army Ballistic Research Laboratory, APG, MD.
Lines: 12

In article <ENAG.90Nov3145415@hild.ifi.uio.no> enag@ifi.uio.no (Erik Naggum) writes:
-In article <1990Nov2.182217.13958@NCoast.ORG> catfood@NCoast.ORG (Mark W. Schumann) writes:
-   Spiffy, but it does depend on (exponent & 1) being the same as saying
-   "exponent is odd."  Most implementations support this, though.

That's good, because the C standard requires this, for positive integers.

-For a ones-complement architectures, this even holds for negative
-integers.  Twos-complement architectures will return "odd" for an even
-negative number in this simple test.  Was that what you were thinking of?

Other way around.