Evandro, > Any perceived increase in accuracy in this test comes > from intermediary calculations being done with 80 bits and > because the errors in fsin are complementary to those in fcos.
I'm always willing to see my mistakes revealed, if it can be done so eloquently and politely. Unlike some people in this thread, you've been both eloquent and polite; thank you. I still maintain that hardware fsin and fcos are valid and valuable for certain classes of applications, and that we need better options and documentation -- both of which I'm more than happy to work on. I look forward to your future comments. ..Scott