On Wed, 27 Aug 2008, alan smith wrote: > I did some searching, and saw some routines on arctan, but wondering is doing a tan calculation out the the reach of a 18F processor. What I am eventually implementing is audio eq calculations. Hi-Tech PICC-18 using 24-bit floats: #include void main(void) { float x, y; x = tan(y); } Memory Summary: Program space used 947h ( 2375) of 20000h bytes ( 1.8%) Data space used 43h ( 67) of F00h bytes ( 1.7%) -- John W. Temples, III -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist