On 2012-09-14 14:18:56 +0200, José Luis García Pallero wrote:
> [...] Moreover, if I use the sqrt() function in the main() instad of
> define the calc() function, I can use the -mieee-fp flag without
> problems
>
> #include<stdio.h>
> #include<math.h>
> int main()
> {
> printf("Calc: %lf\n",sqrt(2.0));
> return 0;
> }
This difference is due to optimization: in this case, GCC evaluates
sqrt(2.0) at compile time. So, no sqrt call is generated (this can
be seen on the asm output with the -S option), and you won't get a
library related error.
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Vincent Lefèvre <vincent@xxxxxxxxxx> - Web: <http://www.vinc17.net/>
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