Re: [Swarm-Support] Exponent Operator

[Paul Johnson]

Same as C.

If it really is squared, at last check, it is faster to just multiply 
(x+3)*(x+3) but if it  is not, then the C function pow(x,y) will do. 
There are specialized functions for some things like sqrt() for y=1/2. 
Look in the C headers for prototypes. On Fedora Core 4 I find these in 
/usr/include/tgmath.h.


/* Power functions.  */

/* Return X to the Y power.  */
#define pow(Val1, Val2) __TGMATH_BINARY_REAL_IMAG (Val1, Val2, pow, cpow)

/* Return the square root of X.  */
#define sqrt(Val) __TGMATH_UNARY_REAL_IMAG (Val, sqrt, csqrt)

/* Return `sqrt(X*X + Y*Y)'.  */
#define hypot(Val1, Val2) __TGMATH_BINARY_REAL_ONLY (Val1, Val2, hypot)

/* Return the cube root of X.  */
#define cbrt(Val) __TGMATH_UNARY_REAL_ONLY (Val, cbrt)




Crile Doscher wrote:
> Could someone tell me what the exponent operator is in ObjC, i.e.  for 
> something like (x + 3) ^2?  Many thanks -
> Crile
> _______________________________________________


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Paul E. Johnson                       email: address@hidden
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