Is there any way to use fractional exponents? I've tried:
with exponent being 1.2 or so and I've also tried a round-a-bout way to get the answer using:Code:pow(base, exponent);
and all it seems to do is convert the exponent to a int and then do the math. And also I am using doubles for all my variables.Code:pow10(log10(base)*exponent);
Write your own exponent function
If the function only takes ints for arguments then you cant pass numbers with decimal points...
"Think not but that I know these things; or think
I know them not: not therefore am I short
Of knowing what I ought."
-John Milton, Paradise Regained (1671)
"Work hard and it might happen."
-XSquared
hmm...
that's weird. it worked for me.
pow takes two double arguments and returns a double. it should work.
what compiler?
I'm using the Borland Command Line Compiler (not sure what version, think it's pretty recent.) And I tried hard coding an example:and it printed: 10 1Code:cout<<pow10(1.2)<<' '<<pow10(.3);
And on the reply of me writing my own function, I'm not quite sure how to do that without using Log or 10^X.
write a power series for the power function and have a certain level of precision, if you want to write your own power function. For more information look on the net for power series.
-LC
Asking the right question is sometimes more important than knowing the answer.
Please read the FAQ
C Reference Card (A MUST!)
Pointers and Memory
The Essentials
CString lib
Works for me
ProducesCode:#include <iostream> #include <cmath> using namespace std; int main ( ) { cout<<pow10(1.2)<<' '<<pow10(.3) << endl; return 0; }
15.8489 1.99526
If you dance barefoot on the broken glass of undefined behaviour, you've got to expect the occasional cut.
If at first you don't succeed, try writing your phone number on the exam paper.
