A86: Re: OP1
[Prev][Next][Index][Thread]
A86: Re: OP1
So how do you get a negative number?
---
Andy Johnson
"Change is inevitable...
except from vending machines"
On Fri, 20 Mar 1998 21:31:55 -0500 "Matt2000" <matt2000@gte.net> writes:
>
>>It's pretty simple, it's just biased by FC00 - that is, FC00 (stored
>as
>>00,FC) is an exponent of 0. Take the exponent you want and add FC00
>to get
>>those two bytes. The rest of the OP is just the number in BCD (i.e.
>123
>>would be stored as $12,$30).
>
>
>Oh ok thanks dude. I understand now. This threw me off
>
>FPNum3: ;-3.6512000000000e-04 = -.00036512
> .db $80, $FC, $FB, $36, $51, $20, $00, $00, $00, $00
>
>But when $FC00 is subtracted by 4 you get $FBFC and then you reverse
>it to
>get the correct exponent. Cool, thanks
>
>-Matt
>
>
_____________________________________________________________________
You don't need to buy Internet access to use free Internet e-mail.
Get completely free e-mail from Juno at http://www.juno.com
Or call Juno at (800) 654-JUNO [654-5866]
Follow-Ups:
References: