Dave Korn wrote:
----Original Message----
From: Ronny Peine Sent: 16 March 2005 17:34
See for example: http://mathworld.wolfram.com/ExponentLaws.html
Ok, I did.
Even though, gcc returns 1 for pow(0.0,0.0) in version 3.4.3 like many other c-compiler do. The same behaviour would be expected from cpow.
No, you're wrong (that the same behaviour would be expected from cpow). See for example:
http://mathworld.wolfram.com/ExponentLaws.html
" Note that these rules apply in general only to real quantities, and can give manifestly wrong results if they are blindly applied to complex quantities. "
<g>
Well yes in the general case it's not applieable, but x^0 is 1 in the complex case, too. And if 0^0 is converted from the real to the complex domain (it's even a part of the complex domain) than the same behaviour would be expected, otherwise the definition wouldn't be very well.
Has anyone found a hint in the ieee754 standard if there is something about it in there? I haven't one here right now, well it's not prizeless. Otherwise these discussion won't end.
cheers, DaveK
cu, Ronny
