Re: A83: Opposite of _formreal

To: assembly-83@lists.ticalc.org
Subject: Re: A83: Opposite of _formreal
From: ComAsYuAre@aol.com
Date: Wed, 23 Feb 2000 14:37:09 EST
Reply-To: assembly-83@lists.ticalc.org


In a message dated 2/23/00 11:56:40 AM Eastern Standard Time, ahj@trition.dk 
writes:

> Dose any one know of a romcall (or a routine) that dose the opposite of _
> formreal. A call that takes a string and converts it into a fp num.
>  (I know of a routine for the 86 that dose the trick but a call would be 
nice:
> ))

Wouldn't be too hard to right one.  Just multiply a (or hl or whatever) by 10 
and then add each digit until you reach the null terminator.

;de->start of string
 ld hl,0
 ld b,h
AddLineNum:
 add hl,hl
 ld b,h
 ld c,l
 add hl,hl
 add hl,hl
 add hl,bc                  ;hl=hl*10
 ld a,(de)
 sub '0'
 jr c,DoneAddLineNum
 ld c,a
 add hl,bc                  ;add new number
 inc de
 jr AddLineNum
DoneAddLineNum:



----
Jonah Cohen
<ComAsYuAre@aol.com>
http://linux.hypnotic.org/~jonah/

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