> Between the two calls of a.out, I reinstalled libm in a version, where I
> reverted the change in line 78 made in October, i.e. by removing
> the () that was added to silence the compiler with WARNS=1.
> 
> <       if((hx-0x3ff00000|lx)==0) return atan(y);   /* x=1.0 */
> ---
> >       if((hx-(0x3ff00000|lx))==0) return atan(y);   /* x=1.0 */

If the comment was "to silence the compiler", then that's the wrong fix,
definitely.  '-' has much higher precedence than bit-wise or, so to
silence the compiler without changing the meaning of the code, you are
correct that it should be:

>          if (((hx-0x3ff00000)|lx)==0) return atan(y);

-allen

-- 
              Allen Briggs - end killing - briggs@macbsd.com