Hi, I have two questions related to precision of float: 1. In my SKILL code: grid1 = 0.5 fprintf(stdout "grid1 = %.20f " grid1) grid2 = 0.4 fprintf(stdout "grid2 = %.20f " grid2) Output in CIW: grid1 = 0.50000000000000000000 grid2 = 0.40000000000000002220 How can I get 0.4 = 0.4000000000000000 as 0.5? 2. I tried to use function techSetPrecision(), but I am confused by the following test: techSetPrecision(2) grid3 = 0.5553567 grid3 = grid3 * 1.0 fprintf(stdout "grid3 = %.20f " grid3) In the CIW: grid3 = 0.55535670000000003643 What I assume is grid3 should become 0.5600000 since I set precision of number of digits in float as 2. Can anyone help me better understand function techSetPrecision? Thanks! Jren