On the precision of the .fed

please How to change the accuracy of the.frd result file

Check the 11 Result Format chapter of the CalculiX GraphiX User’s Manual: http://www.dhondt.de/cgx_2.20.pdf

What I want to ask is how to change the significant digit of the.frd file. Now there are six significant digits. What should I do if I want to count the significant digit?

That would likely require the modification of the CalculiX source code.

try to use the binary version of .frd to see if it fits your purpose, I haven’t really checked if there is any difference.