I thought folks might be interested in this. I compiled whetstone.c with the FC2 gcc and gcc34 to compare the two. I used identical compile statements except for the compiler invoked. gcc -O3 -funroll-loops -malign-double whetstone.c -lm -o whets Then called with: ./whets 50000 The results: gcc 833.3 mips gcc34 1250 mips Quite a difference. Jerry
