re: FORTH benchmarks

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1 total messages Started by anthro Thu, 12 Jul 1984 05:59

#113

Author: anthro
Date: Thu, 12 Jul 1984 05:59

20 lines
1482 bytes

Subject: Re: FORTH efficiency
References: lanl-a.9623, <2867@ecsvax.UUCP>
News Groups: net.lang.forth

<>
A further note:  'real' FORTH programs have very few constructs like
the example       A @ B @ + C !
FORTH applications make little use of variables, which are intended for
global bookkeeping only.  Keeping data flows on the stacks where they
belong speeds up operations considerably.  More reasonable/comparable
source for the above example is       +
which accomplishes all that need be done in the usual case.

FIG updates their literature rarely, but it was admitted some 8 years ago
that someone had gotten carried away on the speed claim relative to assembly.
It is noteworthy that once the names are disposed of, any moderatly long
program will be shorter than a hand coded assembly version (try to recode
some of the HL forth in-line sometime).  This includes the runtime overhead.

Mike Fischer   anthro@ut-ngp

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