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Re: ffs16

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From jgk@panix.com (Joe keane)
Newsgroups comp.arch, comp.lang.c
Subject Re: ffs16
Date Thu, 26 Apr 2012 19:34:17 +0000 (UTC)
Organization Public Access Networks Corp.
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References <jn1tku$pga$1@reader1.panix.com> <9kmj69-hhi2.ln1@ntp6.tmsw.no> <jn9q4m$4dk$1@reader1.panix.com> <qgem69-75r2.ln1@ntp6.tmsw.no>
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Xref csiph.com comp.arch:6666 comp.lang.c:19975

Cross-posted to 2 groups.

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In article <qgem69-75r2.ln1@ntp6.tmsw.no>,
Terje Mathisen  <"terje.mathisen at tmsw.no"> wrote:
>Problem three: How common will zero be?

It's an error.  The calling code needs to check for this case, and do
something besides call this macro/function.

	KK_FFS16(mask, pos);
	assert((mask & (1 << pos)) != 0);
	/* code can now assume this */

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Thread

ffs16 jgk@panix.com (Joe keane) - 2012-04-22 21:36 +0000
  Re: ffs16 Keith Thompson <kst-u@mib.org> - 2012-04-22 15:23 -0700
  Re: ffs16 Eric Sosman <esosman@ieee-dot-org.invalid> - 2012-04-22 20:37 -0400
    Re: ffs16 Philip Lantz <prl@canterey.us> - 2012-04-24 06:36 -0700
      Re: ffs16 Eric Sosman <esosman@ieee-dot-org.invalid> - 2012-04-24 20:32 -0400
        Re: ffs16 Philip Lantz <prl@canterey.us> - 2012-04-25 00:30 -0700
  Re: ffs16 Terje Mathisen <"terje.mathisen at tmsw.no"> - 2012-04-23 16:22 +0200
    Re: ffs16 Eric Sosman <esosman@ieee-dot-org.invalid> - 2012-04-23 21:46 -0400
      Re: ffs16 Terje Mathisen <"terje.mathisen at tmsw.no"> - 2012-04-24 14:16 +0200
        Re: ffs16 Eric Sosman <esosman@ieee-dot-org.invalid> - 2012-04-24 20:40 -0400
    Re: ffs16 jgk@panix.com (Joe keane) - 2012-04-24 19:06 +0000
      Re: ffs16 Terje Mathisen <"terje.mathisen at tmsw.no"> - 2012-04-25 00:38 +0200
        Re: ffs16 jgk@panix.com (Joe keane) - 2012-04-25 20:08 +0000
          Re: ffs16 "James Van Buskirk" <not_valid@comcast.net> - 2012-04-25 15:06 -0600
            Re: ffs16 "James Van Buskirk" <not_valid@comcast.net> - 2012-04-25 16:30 -0600
        Re: ffs16 jgk@panix.com (Joe keane) - 2012-04-25 21:25 +0000
          Re: ffs16 Terje Mathisen <"terje.mathisen at tmsw.no"> - 2012-04-26 01:38 +0200
            Re: ffs16 jgk@panix.com (Joe keane) - 2012-04-26 19:34 +0000
            Re: ffs16 jgk@panix.com (Joe keane) - 2012-04-26 20:41 +0000
              Re: ffs16 Terje Mathisen <"terje.mathisen at tmsw.no"> - 2012-04-27 02:47 +0200
  Re: ffs16 MitchAlsup <MitchAlsup@aol.com> - 2012-04-23 13:01 -0700
    Re: ffs16 Terje Mathisen <"terje.mathisen at tmsw.no"> - 2012-04-24 03:28 +0200
      Re: ffs16 nmm1@cam.ac.uk - 2012-04-24 09:15 +0100
      Re: ffs16 Chris Gray <cg@GraySage.com> - 2012-04-24 13:37 -0600

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