Re: BUG

Article View: comp.lang.postscript

Article #4799

Back to comp.lang.postscript Previous Next

#4799

From: Gisle Aas
Date: Thu, 21 Feb 1991 14:31

22 lines
1456 bytes

In article <218@wander.UUCP> hicham@olsen.UUCP (Hicham Bahi) writes:
>
>   /str 10 string def
>   150 280 moveto
>   currentpoint 280 eq str cvs show
>
>   The display I got from both my Laser printer and
>   Ghostscript was FALSE.

The currentpoint operator returns real numbers. You compare it with an
integer value, which probably is converted to a real number before the
test takes place. Comparing real number for equality is not advisable.

In addition you should be aware that you may get a small round-off
error because the coordinates are converted to device coordinates
after the moveto operator. The currentpoint operator converts them
back into user coordinates.

--
Gisle Aas               |  snail: Boks 114 Blindern, N-0314 Oslo, Norway
Norsk Regnesentral      |  X.400: G=Gisle;S=Aas;O=nr;P=uninett;C=no
voice: +47-2-453561     |  inet:  Gisle.Aas@nr.no

Technical Details

Message-ID: <AAS.91Feb21153148@aase.nr.no>

Path:

arc1-ca.pugleaf.net!utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!sdd.hp.com!uakari.primate.wisc.edu!crdgw1!rpi!uupsi!sunic!kth.se!ugle.unit.no!nuug!ulrik!ulrik!aas

References: <218@wander.UUCP>

Show Full Headers

Complete Article Headers

Path: arc1-ca.pugleaf.net!utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!sdd.hp.com!uakari.primate.wisc.edu!crdgw1!rpi!uupsi!sunic!kth.se!ugle.unit.no!nuug!ulrik!ulrik!aas
From: aas@aase.nr.no (Gisle Aas)
Newsgroups: comp.lang.postscript
Subject: Re: BUG
Message-ID: <AAS.91Feb21153148@aase.nr.no>
Date: 21 Feb 91 14:31:48 GMT
References: <218@wander.UUCP>
Sender: news@ulrik.uio.no (USENET News System)
Reply-To: Gisle.Aas@nr.no
Organization: Norwegian Computing Centre, Oslo, Norway
Lines: 22
In-Reply-To: hicham@olsen.UUCP's message of 20 Feb 91 14:14:40 GMT

Reply to Parent Message