Converting a negative value to a positive

[Hroudtwolf]

Hallo Comunity,

Can anyone explain me , how to convert a negative value to a positive ?


Thanks for your answer ...

[El_Choni]

Code: Select all

value = -value

[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.

[Le Soldat Inconnu]

Or use the ABS() function, see the help

[Hroudtwolf]

thanks @ALL.

I got the answer already in PureBasic-Lounge.

[El_Choni]

At least in x86 CPUs multiplying a value takes more time than negating it. In my mind, too

[traumatic]

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;
}

[Fred]

"value = -value" is probably the fastest (and easiest) way to reverse sign in PB.

[Falko]

[Rings]

i'm too lazy to answer


sorry only in german

[leo1991]

i'm too lazy to answer


sorry only in german

[dige]

i'm too lazy to answer

:lol: nice link Rings ...