http://developer.apple.com/techpubs/macosx/ReleaseNotes/vecLib.html This indicates the routines check for G3/G4 first and if there is no G4 they use the scalar version. So it's fine for all PPC Macs. Also, vecLib contains vMathLib, which mirrors libm for the vector engine. It would be good to use that as well in the linker flags for 10.2 and higher. ==Jan de Leeuw; Professor and Chair, UCLA Department of Statistics; Editor: Journal of Multivariate Analysis, Journal of Statistical Software US mail: 9432 Boelter Hall, Box 951554, Los Angeles, CA 90095-1554 phone (310)-825-9550; fax (310)-206-5658; email: deleeuw@stat.ucla.edu homepage: http://gifi.stat.ucla.edu ------------------------------------------------------------------------ ------------------------- No matter where you go, there you are. --- Buckaroo Banzai http://gifi.stat.ucla.edu/sounds/nomatter.au ------------------------------------------------------------------------ -------------------------