[ 0.576809918873, 6, 3, 2, 1, ], // Large x/b: the old fixed 32-term series diverged badly here. 'Large x mid-range' => [ 0.522481190430, 35, 35, 1, true, ], 'Large x saturating' => [ 1.0, 50, 2, 1, true, ], [ 1.0, 80, 2, 1, true, ], [ '#VALUE!', 'NAN', 3, 2, true, ], [ '#VALUE!', 6, 'NAN', 2, true, ], [ '#VALUE!', 6, 3, 'NAN', true, ], [ '#VALUE!', 6, 3, 2, 'NAN', ], 'Value < 0' => [ '#NUM!', -6, 3, 2, true, ], 'A < 0' => [ '#NUM!', 6, -3, 2, true, ], 'A = 0' => [ '#NUM!', 6, 0, 2, true, ], 'B < 0' => [ '#NUM!', 6, 3, -2, true, ], 'B = 0' => [ '#NUM!', 6, 3, 0, true, ], ];