Hi, If you are unlucky enought to use TExtendedHelper.BuildUP() with wrong values for Mantissa and Exponent, you end up with a binary pattern that does not represent a valid floating point value.
(Yes, this is a programmer's error) Now if you supply this "illegal" float as a parameter to Math.SameValue(), this function will crash. Example: uses Math; var E1, E2: Extended; B: Boolean; begin E1 := E1.BuildUp(False, 0, 16383); E2 := 1.0; B := SameValue(E2, E1); // EInvalidOp: Invalid floating point operation end. Is that expected (as in: documented) behaviour? Does Delphi do the same (I cannot test myself)? B.t.w.: writeln(E2); // gives 'NaN'; writeln(IsNas(E2)); //gives FALSE Bart _______________________________________________ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/cgi-bin/mailman/listinfo/fpc-pascal
