ni...@lysator.liu.se (Niels Möller) writes: One could hope so. I'm still a bit skeptic to mul and accumulate, at least for addmul_2, since it's seems like a good idea to schedule the multiplications far in advance. Multiply-accumulate can have the drawback to put multiplication in the critical path.
IIRC, some ARM processors actually read the accumulation registers later than the multiplicands. > How do you test your loops? I just used tests/mpn/t-mul. I'd advice strongly against that. Creating hard-to-trigger carry propagation bugs is not unlikely when playing with these primitives, and addmul_N.c will be much better at finding these, and will also shorten your development cycle (fast results, no need for make && make check). It will also print a diff table which makes debugging easier. Typical command: gmpsrc=[...] gcc -O1 -I. -I$gmpsrc $gmpsrc/tests/devel/addmul_N.c -DN=2 -DTIMES \ -DCLOCK=3200000000 .libs/libgmp.a tests/.libs/libtests.a && ./a.out -- Torbjörn _______________________________________________ gmp-devel mailing list gmp-devel@gmplib.org http://gmplib.org/mailman/listinfo/gmp-devel
