...check if a string is a valid floating-point number?
Author: ]-Morgue-[
function IsStrFloatNum(s: string): Boolean;
begin
try
// try to convert the string into a floatnumber
StrToFloat(s);
// if there is no error the result is true
Result := True;
except
// if there is any error the result is false
Result := False;
end;
end;
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