How do I raise a value to a negative number?

[Paul Johnson]

Hi,

I'm using Math.Pow to raise a number to another number (I know, that b * b is quicker than using Math.Pow, but this is different).

The problem is that the number I need to raise to is a negative real i.e.

-1.285 ^ -0.625

Currently, this gives me NaN which is pretty useless.

Is there a way around this that will allow me to raise to a negative real?

Thanks

[snehasismishra1]

Hi Paul,

-1.285 ^ -0.625 = (1/-1.285)0.625 = -[(1/1.285)0.625]

and the value is negative or positive is depends on the value of power. If even then positive, else negative. So u can do as below.

double a = -1.285;
double _a = Math.Abs(a);
double b = -0.625;
double _b = Math.Abs(b);
double c = Math.Pow(_a, _b);
double d = -(1 / c);

Thanks,
Snehasis