Hi All, I'm trying to verify the 'fldpi' instruction on the Intel Processor. Hope you would like to have a look at the following piece of example code? Best Regards, Mischa. http://www.cyberfiber.org/sites/default/files/2012020314%20-%20algorithms%20on%20the%20intel%20processor%20-%20unsigned%20integers%20of%20extended%20order%20_64-bit_.tar.bz2