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Re: [PATCH] Add ffs() to libiberty

To: dj at redhat dot com, gcc-patches at gcc dot gnu dot org
Subject: Re: [PATCH] Add ffs() to libiberty
From: Linus Torvalds <torvalds at transmeta dot com>
Date: Sat, 14 Jul 2001 16:20:56 -0700
Newsgroups: linux.egcs.patches
References: <200107140356.f6E3uYR08833@dis.dis.com> <200107142201.SAA29698@greed.delorie.com> <20010714154359.A14794@redhat.com>

In article <200107142258.SAA02250@greed.delorie.com> you write:
>
>> Yes it is portable.
>
>Only to two-s compliment machines.

No. On any machine.

Unsigned arithmetic in C is (by definition) two's complement.

It's only signed arithmetic that is implementation-defined for overflow.

			Linus

Follow-Ups:
- Re: [PATCH] Add ffs() to libiberty
  - From: DJ Delorie

References:
- Re: [PATCH] Add ffs() to libiberty
  - From: Mark Klein
- Re: [PATCH] Add ffs() to libiberty
  - From: DJ Delorie
- Re: [PATCH] Add ffs() to libiberty
  - From: Richard Henderson
- Re: [PATCH] Add ffs() to libiberty
  - From: DJ Delorie

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