Starting with polynomial:
P : t
Extension levels are: 1 8
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Trying to find an order 8 Kronrod extension for:
P1 : t
Solvable: 1
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Ending with final polynomial:
P : t^9 - 9/4*t^7 + 27/16*t^5 - 15/32*t^3 + 9/256*t
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Computing nodes and weights
  current precision for roots: 53
  current precision for roots: 106
 current precision for weights: 53
Linear system for weights solvable: 1
  current precision for roots: 106
  current precision for roots: 212
 current precision for weights: 106
Linear system for weights solvable: 1
Sufficient bits for target precision reached
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The nodes are:
| (-0.86602540378443864676 + 2.6104192559200723602e-154j)  +/-  (8.52e-62, 8.52e-62j)
| (-0.98480775301220805937 + 2.6512070567938234908e-155j)  +/-  (5.94e-62, 5.94e-62j)
| (2.237502219360062023e-153 - 7.4583407312002067433e-155j)  +/-  (2.01e-152, 2.01e-152j)
| (-0.34202014332566873304 + 2.7677436307188267211e-156j)  +/-  (2.12e-63, 2.12e-63j)
| (-0.64278760968653932632 + 1.0811498557495416879e-158j)  +/-  (2.27e-62, 2.27e-62j)
| (0.98480775301220805937 - 7.7835963089614094587e-169j)  +/-  (5.36e-62, 5.36e-62j)
| (0.34202014332566873304 + 5.8835934206613381781e-185j)  +/-  (2.12e-63, 2.12e-63j)
| (0.64278760968653932632 - 2.7434823709235467812e-199j)  +/-  (2.19e-62, 2.19e-62j)
| (0.86602540378443864676 + 5.418110963941205497e-210j)  +/-  (6.36e-62, 6.36e-62j)
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The weights are:
| (0.11111111111111111111 - 2.626409524661936425e-155j)  +/-  (2.71e-24, 2.45e-54j)
| (0.11111111111111111111 + 1.3445689635088440483e-154j)  +/-  (9.53e-25, 8.62e-55j)
| (0.11111111111111111111 - 5.0712002192505263655e-155j)  +/-  (6.19e-25, 5.61e-55j)
| (0.11111111111111111111 + 5.6513770229617330366e-155j)  +/-  (5.41e-25, 4.89e-55j)
| (0.11111111111111111111 - 1.5035410524885107007e-154j)  +/-  (4.7e-25, 4.23e-55j)
| (0.11111111111111111111 - 5.4508067803340963312e-156j)  +/-  (1.14e-26, 1.03e-56j)
| (0.11111111111111111111 + 5.6325384867917135738e-155j)  +/-  (8.41e-26, 7.7e-56j)
| (0.11111111111111111111 - 3.1597520211154175858e-155j)  +/-  (2.23e-26, 2.06e-56j)
| (0.11111111111111111111 + 1.7082478231045099229e-155j)  +/-  (1.12e-26, 1e-56j)
