From: tmoran@bix.com
Subject: Re: Newbie question : types , representation
Date: 1999/08/24
Date: 1999-08-24T00:00:00+00:00 [thread overview]
Message-ID: <4Oyw3.549$W5.69009@typhoon-sf.snfc21.pbi.net> (raw)
In-Reply-To: 37C1AA76.14D14819@tu-cottbus.de
From an old base64 decoder, slightly modified from Ada 83 to Ada 95:
type bytes is mod 256;
for bytes'size use 8;
package out_io is new sequential_io(bytes);
subtype base64s is integer range 0 .. 63;
a_byte:bytes:=0;
next_byte:bytes:=0;
type slots is mod 4;
pack_di:slots:=0;
procedure put(n:in base64s) is
begin
case pack_di is
when 0 => a_byte:=bytes(n)*4;
when 1 => out_io.write(f_output, a_byte+bytes(n/16));
a_byte:=bytes((n mod 16)*16);
when 2 => out_io.write(f_output, a_byte+bytes(n/4));
a_byte:=bytes(n mod 4)*64;
when 3 => out_io.write(f_output, a_byte+bytes(n));
end case;
pack_di:=pack_di+1;
end put;
next prev parent reply other threads:[~1999-08-24 0:00 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
1999-08-22 0:00 Newbie question : types , representation Jos De Laender
1999-08-22 0:00 ` Martin Dowie
1999-08-22 0:00 ` Robert Dewar
1999-08-23 0:00 ` Wolfgang Jeltsch
1999-08-24 0:00 ` tmoran [this message]
1999-08-24 0:00 ` jdla
1999-08-24 0:00 ` Matthew Heaney
1999-08-24 0:00 ` Jos De Laender
1999-08-24 0:00 ` Brian Rogoff
1999-08-25 0:00 ` Jos De Laender
1999-08-22 0:00 ` Wilhelm Spickermann
1999-08-23 0:00 ` Simon Wright
1999-08-23 0:00 ` Martin C. Carlisle
[not found] ` <37C621F3.C6C0DC3A@acenet.com.au>
1999-08-27 0:00 ` David C. Hoos, Sr.
1999-08-27 0:00 ` tmoran
1999-08-27 0:00 ` Florian Weimer
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