P.S.: a good intro to the not so well known hex floating point notation of C: http://www.exploringbinary.com/hexadecimal-floating-point-constants/. You should use this to get the 10^(2^n) constants right. Best regards, Michael Intel Deutschland GmbH Registered Address: Am Campeon 10-12, 85579 Neubiberg, Germany Tel: +49 89 99 8853-0, www.intel.de Managing Directors: Christin Eisenschmid, Christian Lamprechter Chairperson of the Supervisory Board: Nicole Lau Registered Office: Munich Commercial Register: Amtsgericht Muenchen HRB 186928