• Raymond Toy's avatar
    Fix atan/taylor bug and add atan2/taylor. · 4d09f5a3
    Raymond Toy authored
    qd-fun.lisp:
    o Fix issue with atan-qd/taylor for large args. We use the
      relationship atan(x) = pi/2-atan(1/x) for x > 1.
    o Add atan2-qd/taylor.  This appears to be much faster than
      atan2-qd/newton. 
    
    timing.lisp:
    o Add timing test for atan2-qd.
    4d09f5a3