Re: __builtin_cpow((0,0),(0,0))

[Gabriel Dos Reis <gdr at integrable-solutions dot net>]

Vincent Lefevre <vincent+gcc@vinc17.org> writes:

| On 2005-03-12 02:59:46 +0100, Gabriel Dos Reis wrote:
| > You probably noticed that in the polynomial expansion, you are using
| > an integer power -- which everybody agrees on yield 1 at the limit.
| > 
| > I'm tlaking about 0^0, when you look at the limit of function x^y
| > -- which is closer to cpow() tgan powi().  Did you miss that?
| 
| When one uses the power notation in mathematics, one (almost) never
| says when the context is a function R x R -> R or R x Z -> R or
| whatever.

That is (almost) absolutely false.

| The problem is the same in ISO C99 (and probably other
| languages),

Other languages do make the distinction.  That C99 did not have the
syntax for that is a defect rather than virtue. Examples have been
provided, but I guess you prefer to ignore them.

-- Gaby