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From: bliss@sp64.csrd.uiuc.edu (Brian Bliss)
Newsgroups: comp.lang.c
Subject: Re: Column-wise data storage for matrices in C, any advantage(s)?
Keywords: store data in rows/columns, memory traffic, gaxpy rich
Message-ID: <1991Feb5.175804.10880@csrd.uiuc.edu>
Date: 5 Feb 91 17:58:04 GMT
References: <1991Feb1.214342.4982@portia.Stanford.EDU> <1748@lee.SEAS.UCLA.EDU> <1991Feb2.071930.9879@portia.Stanford.EDU>
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Reply-To: bliss@sp64.csrd.uiuc.edu (Brian Bliss)
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Organization: Center for Supercomputing Research and Development
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 So reverse the row/column index, and 

 #define  elmt(array, row, column)	array[column][row]

 bb