[gforth] / gforth / sieve.fs  

gforth: gforth/sieve.fs

File: [gforth] / gforth / sieve.fs (download)
Revision: 1.1.1.1 (vendor branch), Fri Feb 11 16:30:48 1994 UTC (19 years, 3 months ago) by anton
Branch: no-vendor
CVS Tags: alpha
Changes since 1.1: +0 -0 lines 
The GNU Forth Project

#! /usr/stud/paysan/bin/forth

$1FFE Constant 8190
Create flags 8190 allot
flags 8190 + AConstant eflag

: PRIMES  ( -- n )  FLAGS 8190 1 FILL  0 3  EFLAG FLAGS
  DO   I C@
       IF  DUP I + DUP EFLAG <
           IF    EFLAG SWAP
                 DO  0 I C! DUP  +LOOP
           ELSE  DROP  THEN  >R 1+ R>
           THEN  2 +
       LOOP  DROP ;

: BENCHMARK  0 &100 0 DO  PRIMES NIP  LOOP ;
&10 BASE !
BENCHMARK .
BYE
\ HPPA/720, 50 MHz: user 3.90s
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