Mark Rages wrote: > If I try to add 1.0 to 0, I get -1.0. > > ... > > No wonder my PID controller wasn't working right. > Has anone else encountered this? Not me. I use my own 24 bit floating point routines for PID controllers and the like. ***************************************************************** Embed Inc, embedded system specialists in Littleton Massachusetts (978) 742-9014, http://www.embedinc.com -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist