Christoph Lampert (chl at math.uni-bonn.de) wrote: > Lambda = 0xfe00/(q*q) = 65024/4 = 16256 > 727*727*Lambda = 8591767424 which has 33 bits! Yes i noticed that overflow yesterday, that's why i asked for original coefficients. DC values are very likely to overflow this formula. -- Edouard Gomez