Hello Sven: Thanks for your answer. Simplifies my life a lot. ------ There is another C99/gcc built-in with the potential to speed up code a lot: the restrict keyword. See: http://www.cellperformance.com/mike_acton/2006/05/demystifying_the_restrict_keyw.html I'll build two versions of the gegl-sampler-yafr code (one of which which I'll masquerade as gegl-sampler-cubic so I can run both without recompiling) and run careful benchmarks this weekend. One version will stay away from restrict and c99 math intrinsics, the other will not (first pass, I may not go as far as making explicit calls to fma, although my code is structured in the hope that the compiler recognizes fused multiply-adds when appropriate). I don't quite understand the issues of writing c++ code using c99 features (this is why knowing that they are gcc built-ins is useful, provided one knows that gcc will be the compiler). Maybe I'll inspire myself from http://www.ddj.com/cpp/184401653 Nicolas Robidoux Laurentian University/Universite Laurentienne _______________________________________________ Gegl-developer mailing list Gegl-developer@xxxxxxxxxxxxxxxxxxxxxx https://lists.XCF.Berkeley.EDU/mailman/listinfo/gegl-developer
