Hi, On Fri, 2008-09-12 at 12:50 -0400, Nicolas Robidoux wrote: > -------- > CONTEXT: > -------- > > I have completely changed the gegl/buffer/gegl-sampler-yafr.c > code. > > Before I put together the patch to the new yafr, I would like to > see if I could make the code even faster by using C99/gcc > built-in math intrinsics. I have not tried this yet. It would be interesting to know if this makes a difference and how much of a difference it makes. In general it seems like a dependency on GCC is a high price to pay and I am not sure if we are willing to do that. Depending on C99 is something that could certainly be considered. > I noticed that fabs, fmin and copysign, or similar C99/gcc > built-ins, are not found anywhere in the gegl source. > > Is there a preferred/tolerated way of using such math functions in gegl? As far as I can see there is no decision on this yet. > Can I assume that gfloats are floats? Yes. > Can I assume that gdoubles are doubles? Yes. > Must I program with the possibility that gfloats be doubles? No, gfloat is just a typedef to float. Always. > Must I program with the possibility that gdoubles be floats? No, gdouble is just a typedef to double. Always. Sven _______________________________________________ Gegl-developer mailing list Gegl-developer@xxxxxxxxxxxxxxxxxxxxxx https://lists.XCF.Berkeley.EDU/mailman/listinfo/gegl-developer
