From:	Martin Ambuhl <mambuhl AT earthlink DOT net>
Newsgroups:	comp.os.msdos.djgpp
Subject:	Re: how to write exponents?
Date:	Wed, 21 Apr 1999 04:11:53 -0400
References:	<ZFdT2.478$h35 DOT 4939 AT newsfeed DOT slurp DOT net>
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To:	djgpp AT delorie DOT com
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Todd Steury wrote:
> 
> Hey all,
> 
> I'm using C++ and the djgpp compiler to write mathematical models.  For
> exponents, I've written my equations as "a^b" to signify 'take a to the b
> power'.  However, the compiler complains "invalid operands 'float' and
> 'double' to binary 'operator ^'".  What is the proper mathematical operator
> for exponent?  If '^' is the proper operator, then what am I missing?  A
> sample line of code might be:
> 
> numberFemales = survival^0.226175;

#include <math.h>
  /* .... */
  numberFemales = pow(survival, 0.226175);

'^' is the XOR operator.

Do yourself a favor and get a simple C or C++ book instead of just expecting the
compiler to eat whatever language you are used to writing.

> 
> where all variables are initialized as float, double, or long double.
> Please send responses to e-mail:
> 
> steu4718 AT uidaho DOT edu
> 
> Thanks
> 
> Todd Steury


-- 
Martin Ambuhl (mambuhl AT earthlink DOT net)
Note: mambuhl AT tiac DOT net will soon be inactive

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