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Re: Inline DOT_PRODUCT revisited - to libgfortran/m4 gurus

From: dominiq at lps dot ens dot fr (Dominique Dhumieres)
To: paulthomas2 at wanadoo dot fr, jblomqvi at cc dot hut dot fi
Cc: stevenb dot gcc at gmail dot com, gcc-patches at gcc dot gnu dot org, fortran at gcc dot gnu dot org, dominiq at lps dot ens dot fr
Date: Sun, 26 Feb 2006 21:18:45 +0100
Subject: Re: Inline DOT_PRODUCT revisited - to libgfortran/m4 gurus
References: <43730120.7030808@wanadoo.fr> <200602252337.39067.steven@gcc.gnu.org> <4401C6F1.9070306@wanadoo.fr> <20060226162247.GU1854@vipunen.hut.fi> <4402060A.6040604@wanadoo.fr>

> result = any ( arg1.and.arg2)
> ... gives 4(!) ...

I get F with GNU Fortran 95 (GCC 4.0.2) and GNU Fortran 95 (GCC) 4.2.0 20060225 (experimental).

>2) What about dot_product for logicals? ...
> I don't know of any real usage of this ...

I don't know either for dot_product, but the powers of the
connectivity matrix (a_ij=T if there is a directed link from i to j
and the iteration uses matmul) allow to study the topology of
directed graphs, but I don't know if this is the practical method.

Dominique

Follow-Ups:
- [Patch, fortran] Inline DOT_PRODUCT
  - From: Paul Thomas

References:
- Inline DOT_PRODUCT revisited
  - From: Steven Bosscher
- Re: Inline DOT_PRODUCT revisited - to libgfortran/m4 gurus
  - From: Paul Thomas
- Re: Inline DOT_PRODUCT revisited - to libgfortran/m4 gurus
  - From: Janne Blomqvist
- Re: Inline DOT_PRODUCT revisited - to libgfortran/m4 gurus
  - From: Paul Thomas

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