Re: Quick question on math in C

Wow, so many differnt ways heh, thanks everyone =)

Michael Barton wrote:

>Or:
>  variable = -variable;
>takes less cpu than multiplying by -1.
>
>If you use abs, you'll also have to add -lm to the L_FLAGS in your
>makefile (to link to the math library).
>Or you could just write your own...
>  int my_abs(int a)
>  {
>    return (a < 0) ? -a : a;
>  }
>
>On 4/16/05, Ammaross Danan <[email protected]> wrote:
>  
>
>>Number * -1
>>
>>Or
>>
>>#include <math.h>
>>Number = abs(Number);
>>
>>Use the later if you always want it to be positive, the first could
>>potentially make it go negative if it was positive to begin with...
>>
>>Ammaross
>>www.rotf.net
>>
>>-----Original Message-----
>>From: [email protected] [mailto:[email protected]] On Behalf Of cyhawk
>>Sent: Saturday, April 16, 2005 1:54 PM
>>To: [email protected]
>>Subject: Quick question on math in C
>>
>>Err how would i convert a negitive number to a positive number?
>>ie -5 to 5
>>or -754 to 754
>>in c?
>>
>>Google was no help cause i have no idea how to form the question ;) Thanks
>>=)
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>
>
>On 4/16/05, Ammaross Danan <[email protected]> wrote:
>  
>
>>Number * -1
>>
>>Or
>>
>>#include <math.h>
>>Number = abs(Number);
>>
>>Use the later if you always want it to be positive, the first could
>>potentially make it go negative if it was positive to begin with...
>>
>>Ammaross
>>www.rotf.net
>>
>>-----Original Message-----
>>From: [email protected] [mailto:[email protected]] On Behalf Of cyhawk
>>Sent: Saturday, April 16, 2005 1:54 PM
>>To: [email protected]
>>Subject: Quick question on math in C
>>
>>Err how would i convert a negitive number to a positive number?
>>ie -5 to 5
>>or -754 to 754
>>in c?
>>
>>Google was no help cause i have no idea how to form the question ;) Thanks
>>=)
>>--
>>ROM mailing list
>>[email protected]
>>Unsubscribe here ->>> http://www.rom.org/cgi-bin/mailman/listinfo/rom
>>
>>--
>>ROM mailing list
>>[email protected]
>>Unsubscribe here ->>> http://www.rom.org/cgi-bin/mailman/listinfo/rom
>>
>>    
>>

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