[net.lang.c] C interface to Vax FPA

woodham (12/16/82)

I'm looking for a C support for the Vax 11/780 floating point accelerator
(FPA).  In particular, I would like:

1.  Versions of the trigonometric functions (sin, cos, etc.) which use
    the POLY instruction

2.  A modification/interface to the C compiler so that the evaluation
    of a polynomial can be flagged and the appropriate machine code
    generated and/or interfaced to.

Before I go off and do these things myself, I thought I would ask.

thomas (01/04/83)

When we first got our Vax, I wrote a sin/cos function which used the
poly instruction.  It was not significantly faster.  This was before
we got our fpa, but I bet it doesn't make much difference in the
relative speeds.  (It was, however, smaller.)
=Spencer