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Converting a negative value to a positive
Posted: Thu Apr 07, 2005 4:55 pm
by Hroudtwolf
Hallo Comunity,
Can anyone explain me , how to convert a negative value to a positive ?
Thanks for your answer ...
Posted: Thu Apr 07, 2005 4:56 pm
by El_Choni
Posted: Thu Apr 07, 2005 5:34 pm
by dracflamloc
That works in pb?
In general you will need to do something more like:
value=value*-1;
Which is what Choni's example does anyway, but this is non-specific to PB.
Posted: Thu Apr 07, 2005 5:38 pm
by Le Soldat Inconnu
Or use the ABS() function, see the help
Posted: Thu Apr 07, 2005 6:02 pm
by Hroudtwolf
thanks @ALL.
I got the answer already in PureBasic-Lounge.
Posted: Thu Apr 07, 2005 6:07 pm
by El_Choni
At least in x86 CPUs multiplying a value takes more time than negating it. In my mind, too
Posted: Thu Apr 07, 2005 6:11 pm
by traumatic
dracflamloc wrote:That works in pb?
In general you will need to do something more like:
value=value*-1;
Which is what Choni's example does anyway, but this is non-specific to PB.
What do you mean?
Code: Select all
#include <stdio.h>
int main(int argc, char* argv[])
{
long value = 12345;
value *= -1;
printf("value: %d\n", value);
value =- value;
printf("value: %d\n", value);
value =~ value+1;
printf("value: %d\n", value);
return 0;
}
Posted: Thu Apr 07, 2005 11:10 pm
by Fred
"value = -value" is probably the fastest (and easiest) way to reverse sign in PB.
Posted: Fri Apr 08, 2005 7:19 am
by Falko
Posted: Fri Apr 08, 2005 8:19 am
by Rings
Posted: Fri Apr 08, 2005 8:22 am
by leo1991
Posted: Fri Apr 08, 2005 9:51 am
by dige
:lol: nice link Rings ...
