[Freeciv-Dev] Re: (PR#6781) Cleanups

["Gregory Berkolaiko" <Gregory.Berkolaiko@xxxxxxxxxxxx>]

<URL: http://rt.freeciv.org/Ticket/Display.html?id=6781 >

On Thu, 6 Nov 2003 rt@xxxxxxxxxxx wrote:

> 2)
> ai/aiunit.c:591:134: Expression has undefined behavior (left operand
> uses errno, modified by right operand): log(most_desirable / ((((100 *
> 5 * 81 + 100 * (9 - 5) * 51) + 1) + 1) + (100 * 5 * 81 + 100 * (9 - 5)
> * 51))) / log(0.6)
> Code has unspecified behavior. Order of evaluation of function
> parameters or subexpressions is not defined, so if a value is used and
> modi fied in different places not separated by a sequence point
> constraining evaluation order, then the result of the expression is
> unspecified.

I do not understand this error at all.  Mathmatically, the order of 
evaluation is well defined.

G.