1. ABS(sequence)?
I ran into this silly little problem, but I'm not able
to figure it out... At least not tonight.
How do I get the absolute value of a variable?
I can not use the IF statement, since I need to
operate on sequences (and setting up a loop is
not very tempting, since I feel the need for speed).
Any help would be greatly appreciated.
Thanks,
Tor Bernhard Gausen
2. Re: ABS(sequence)?
- Posted by Adam Weeden <theskaman at MINDSPRING.COM>
Feb 09, 1999
-
Last edited Feb 10, 1999
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>How do I get the absolute value of a variable?
>
>I can not use the IF statement, since I need to
>operate on sequences (and setting up a loop is
>not very tempting, since I feel the need for speed).
As far as I can see. (And in my experience). there is no other way BESIDES
using if and at least a while or a for loop.
Adam Weeden
WeedenSoft Technologies
Available soon at weedensoft.com
------=_NextPart_000_0023_01BE5486.F78CC020
name="Adam W Weeden.vcf"
3. Re: ABS(sequence)?
Wrong again:
function abs(object x) --Carl's
return x*((x>0)-(x<0))
end function
-----Original Message-----
From: Adam Weeden <theskaman at MINDSPRING.COM>
To: EUPHORIA at LISTSERV.MUOHIO.EDU <EUPHORIA at LISTSERV.MUOHIO.EDU>
Date: Wednesday, February 10, 1999 6:02 PM
Subject: Re: ABS(sequence)?
>>How do I get the absolute value of a variable?
>>
>>I can not use the IF statement, since I need to
>>operate on sequences (and setting up a loop is
>>not very tempting, since I feel the need for speed).
> As far as I can see. (And in my experience). there is no other way BESIDES
>using if and at least a while or a for loop.
>
>Adam Weeden
>WeedenSoft Technologies
>
>Available soon at weedensoft.com
>
4. Re: ABS(sequence)?
------=_NextPart_000_00E0_01BE548C.BA12C720
charset="iso-8859-1"
>Wrong again:
>
>function abs(object x) --Carl's
> return x*((x>0)-(x<0))
>end function
>
I'm sorry that wasn't an algorithm I was aware of.
P.S. When was I wrong the first time.
------=_NextPart_000_00E0_01BE548C.BA12C720
name="Adam W Weeden.vcf"
5. Re: ABS(sequence)?
Hmm... you could square the number/sequence, then take the square root =
of the=20
result. I doubt that would help in the speed department, though. 
AFAIK, the only (lower-math) operation that returns one value regardless =
of sign is squaring. Otherwise you're probably stuck with a loop or IF =
statement.
Rod Jackson
----------
From: Tor Bernhard Gausen[SMTP:tor.gausen at C2I.NET]
Sent: Tuesday, February 09, 1999 9:24 PM
Subject: ABS(sequence)?
I ran into this silly little problem, but I'm not able
to figure it out... At least not tonight.
How do I get the absolute value of a variable?
I can not use the IF statement, since I need to
operate on sequences (and setting up a loop is
not very tempting, since I feel the need for speed).
Any help would be greatly appreciated.
Thanks,
Tor Bernhard Gausen
6. Re: ABS(sequence)?
On Wed, 10 Feb 1999, jiri babor wrote:
] function abs(object x) --Carl's
] return x*((x>0)-(x<0))
] end function
Not strictly true. It's *based* on mine... :)
My functions run like this:
function sgn(object x) -- Return sign(s) of/in an object
return (x>0)-(x<0)
end function
function abs(object x) -- Return absolute value(s) of/in an object
return x*sgn(x)
end function
--
Carl R White -- Final Year Computer Science at the University of Bradford
E-mail........: cyrek- at -bigfoot.com -- Remove hyphens. Ta :)
URL...........: http://www.bigfoot.com/~cyrek/
Uncrackable...: "19.6A.23.38.52.73.45 25.31.1C 3C.53.44.39.58"
7. Re: ABS(sequence)?
Are you calling me a liar? Get stuffed, Carl! jiri
-----Original Message-----
From: Carl R. White <C.R.White at SCM.BRAD.AC.UK>
To: EUPHORIA at LISTSERV.MUOHIO.EDU <EUPHORIA at LISTSERV.MUOHIO.EDU>
Date: Thursday, February 11, 1999 3:41 AM
Subject: Re: ABS(sequence)?
>On Wed, 10 Feb 1999, jiri babor wrote:
>
>] function abs(object x) --Carl's
>] return x*((x>0)-(x<0))
>] end function
>
>Not strictly true. It's *based* on mine... :)
>
>My functions run like this:
>
>function sgn(object x) -- Return sign(s) of/in an object
> return (x>0)-(x<0)
>end function
>
>function abs(object x) -- Return absolute value(s) of/in an object
> return x*sgn(x)
>end function
>
>--
>Carl R White -- Final Year Computer Science at the University of Bradford
>E-mail........: cyrek- at -bigfoot.com -- Remove hyphens. Ta :)
>URL...........: http://www.bigfoot.com/~cyrek/
>Uncrackable...: "19.6A.23.38.52.73.45 25.31.1C 3C.53.44.39.58"
>
8. Re: ABS(sequence)?
On Thu, 11 Feb 1999, jiri babor wrote:
] Are you calling me a liar? Get stuffed, Carl! jiri
Just in a pedantic mood today. Trying to find people at this Uni who want
to buy some computer equipment... :)
puts(1, 'S' & (96 + {15,18,18,25}) -- :),
Carl
--
Carl R White -- Final Year Computer Science at the University of Bradford
E-mail........: cyrek- at -bigfoot.com -- Remove hyphens. Ta :)
URL...........: http://www.bigfoot.com/~cyrek/
Uncrackable...: "19.6A.23.38.52.73.45 25.31.1C 3C.53.44.39.58"
9. Re: ABS(sequence)?
Carl, you wrote:
>Just in a pedantic mood today. Trying to find people at this Uni who want
>to buy some computer equipment... :)
>
>puts(1, 'S' & (96 + {15,18,18,25}) -- :),
Pedantic? I'll show you pedantic: there is a missing closing round bracket at
the end of your reluctant 'Sorry'. jiri
10. Re: ABS(sequence)?
On Thu, 11 Feb 1999, Jiri Babor wrote:
] Pedantic? I'll show you pedantic: there is a missing closing round bracket at
] the end of your reluctant 'Sorry'. jiri
Uh.. Jiri? No smiley here... Am I now "in the bad books" ? :( [ :) ? ]
--
Carl R White -- Final Year Computer Science at the University of Bradford
E-mail........: cyrek- at -bigfoot.com -- Remove hyphens. Ta :)
URL...........: http://www.bigfoot.com/~cyrek/
Uncrackable...: "19.6A.23.38.52.73.45 25.31.1C 3C.53.44.39.58"
