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  • Raymond Toy's avatar
    Add series for incomplete-gamma for when the fraction is slow. · 97bc71a1
    Raymond Toy authored
    o Add series for incomplete gamma function for small a and z.  Needed
      because the continued fraction is slow in this range.
    o In INCOMPLETE-GAMMA-TAIL, call INCOMPLETE-GAMMA instead of
      CF-INCOMPLETE-GAMMA just in case a and z are small.
    o In INCOMPLETE-GAMMA, use the series for small a and z.
    o Simplify evaluation of Si(z) when z is real.
    97bc71a1