Hi!

How would you write this in C?

y = -8E-11x^5

I am aware of the pow() function but that takes things like 4^5, 2^3, etc. What about a very small number like that to the fifth power? Is there something for "E"? my compiler does not like it if I put -.00000000008

thanks

 

The length of the number you put depends if it is unsigned or singed and if you define it as short, long, longlong or floating.

As, i understood you are talking about PIC uC programming so check its C reference manual here on page 198:

http://www.ccsinfo.com/downloads/CReferenceManual.pdf

 

Hi!

How would you write this in C?

y = -8E-11x^5

I am aware of the pow() function but that takes things like 4^5, 2^3, etc. What about a very small number like that to the fifth power? Is there something for "E"? my compiler does not like it if I put -.00000000008

thanks

You are correct about pow(),

y = pow(-8.0E-11, 5.0);

FYI, you really should have just looked this up.

 

Hi all,
a0=a1=1; ai=a(i-2)+a(i-1)/pow(2,i-1); i=2,3,... so
a0*a1*...*a14=?
how would you write this in C?

Plz help me and Thx