Check the edit in my previous post, there's a very useful link there.
Type: Posts; User: anduril462
Check the edit in my previous post, there's a very useful link there.
You need to print out more decimal places. C only uses 6 places after the decimal by default. Try "%.35Lf". That gives you 35 digits after the decimal. Adjust as needed.
EDIT: Also, check out...