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Raymond Toy's avatar
Raymond Toy authored
Don't restore the fpu state from the context in the interrupt handler
code (interrupt_handle_now) because that just makes the fpu state the
same as the sigcontext that received the exception.  I think this was
done to reset the x87 fpu precision to 53-bit so that lisp can
continue with default double-float rounding.  This isn't needed
anymore since lisp doesn't use x87 anymore.

In SIGFPE-HANDLER, don't modify the current fp state based on the
state from the sigcontext.

These two items cause the arithmetic-error exception printer to
trigger inexact when printing out the args.  We add a few debugging
prints for now so we can see what the FP state is in the handler.
Remove them later.
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