On 2005-05-30 11:51:59 -0400, Scott Robert Ladd wrote: > The fact that trigonometric functions can extended beyond 2D geometry in > no way invalidates their use in their original domain. I've written many > 2D and 3D applications over the years without need for a sine outside > the range [0, 2*PI] (or [-PI, PI] in some cases). Some people live and > die by one of those programs, and no one's died yet because I used > -ffast-math in compiling it.
I wonder if compilers could use information for assertions. For instance, instead of writing sin(x), you could write: sin((assert(x >= 0 && x <= 2 * pi), x)) possibly via a macro. IMHO, this would be better than using switches such as -ffast-math, and you could mix small ranges and large ranges in the same program. -- Vincent Lefèvre <[EMAIL PROTECTED]> - Web: <http://www.vinc17.org/> 100% accessible validated (X)HTML - Blog: <http://www.vinc17.org/blog/> Work: CR INRIA - computer arithmetic / SPACES project at LORIA
