Xref: utzoo comp.lang.fortran:4204 comp.lang.c:34349
Path: utzoo!utgpu!watserv1!watmath!att!linac!pacific.mps.ohio-state.edu!zaphod.mps.ohio-state.edu!samsung!cs.utexas.edu!yale!cmcl2!lanl!jlg
From: jlg@lanl.gov (Jim Giles)
Newsgroups: comp.lang.fortran,comp.lang.c
Subject: Re: Fortran vs. C for numerical work (SUMMARY)
Message-ID: <7318@lanl.gov>
Date: 29 Nov 90 17:52:25 GMT
References: <1990Nov29.040910.7400@kithrup.COM>
Organization: Los Alamos Natl Lab, Los Alamos, N.M.
Lines: 11

From article <1990Nov29.040910.7400@kithrup.COM>, by sef@kithrup.COM (Sean Eric Fagan):
> [...]
> Uhm... you don't have to, I don't think.  A Cyber had only one type of
> multiply instruction, but if the exponent were 0, it did an integer
> multiplication.  I believe Cray's do the same thing.

No.  The Crays have an integer multiply unit for addresses.  This mult
takes 4 clocks.  Memory access costs 14 or 17 clocks depending on the
model of machine you have.

J. Giles