Starting with polynomial:
P : 3/2*t^2 - 1/2
Extension levels are: 2 14
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Trying to find an order 14 Kronrod extension for:
P1 : 3/2*t^2 - 1/2
Solvable: 1
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Ending with final polynomial:
P : 3/2*t^16 - 10827/1972*t^14 + 47593/5916*t^12 - 889889/147900*t^10 + 549549/226780*t^8 - 1001/1972*t^6 + 11011/226780*t^4 - 3861/2525860*t^2 + 1859/366249700
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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
  current precision for roots: 212
  current precision for roots: 424
 current precision for weights: 212
Linear system for weights solvable: 1
Sufficient bits for target precision reached
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The nodes are:
| (0.98812513120329170302 - 2.0170819670128466435e-385j)  +/-  (2.05e-123, 2.05e-123j)
| (-0.93798437900993878791 + 8.9678859049266594092e-391j)  +/-  (3.93e-123, 3.93e-123j)
| (-0.85001680456214491633 - 1.9281133659589622193e-391j)  +/-  (2.56e-123, 2.56e-123j)
| (-0.98812513120329170302 + 3.528387059355810605e-392j)  +/-  (1.62e-123, 1.62e-123j)
| (0.93798437900993878791 + 3.9757970526169690269e-392j)  +/-  (3.8e-123, 3.8e-123j)
| (0.72799373091578229991 - 6.690396017394031578e-398j)  +/-  (8.24e-124, 8.24e-124j)
| (0.061237645707923134607 + 9.4201289757582503332e-405j)  +/-  (1.24e-127, 1.24e-127j)
| (-0.72799373091578229991 + 1.1355790377306919649e-410j)  +/-  (8.7e-124, 8.7e-124j)
| (-0.40545074306610185911 + 3.5198826965114624392e-412j)  +/-  (1.99e-125, 1.99e-125j)
| (0.22374161346734564129 - 7.3721703359791712708e-416j)  +/-  (1.35e-126, 1.35e-126j)
| (0.85001680456214491633 + 2.6470028326544189643e-418j)  +/-  (2.65e-123, 2.65e-123j)
| (0.40545074306610185911 - 2.6884425467320399909e-426j)  +/-  (1.91e-125, 1.91e-125j)
| (-0.22374161346734564129 - 2.2213264181476512323e-433j)  +/-  (1.4e-126, 1.4e-126j)
| (-0.57735026918962576451 - 1.6001588332708094922e-443j)  +/-  (1.56e-124, 1.56e-124j)
| (-0.061237645707923134607 + 4.8022558127478889319e-451j)  +/-  (1.24e-127, 1.24e-127j)
| (0.57735026918962576451 - 1.0955981344598181208e-452j)  +/-  (1.57e-124, 1.57e-124j)
-------------------------------------------------
The weights are:
| (0.030411586821869882353 + 2.6287143431205869763e-385j)  +/-  (2.11e-47, 1.14e-107j)
| (0.069541871091114917357 + 1.14391016830361066e-386j)  +/-  (1.01e-47, 5.43e-108j)
| (0.10576250815460243841 - 2.4746470453846186897e-386j)  +/-  (5.87e-48, 3.15e-108j)
| (0.030411586821869882353 - 3.103580880321567058e-387j)  +/-  (4.18e-48, 2.25e-108j)
| (0.069541871091114917357 - 4.3940831477512894159e-385j)  +/-  (5.67e-49, 3.04e-109j)
| (0.13738029534167505412 - 3.0187780956335604499e-385j)  +/-  (1.74e-49, 9.33e-110j)
| (0.13488262293158453301 - 6.9584857599628448059e-385j)  +/-  (5.91e-50, 3.17e-110j)
| (0.13738029534167505412 + 4.5760278986426817451e-386j)  +/-  (1.05e-49, 5.65e-110j)
| (0.17934180530025449292 + 1.5019004469639099365e-385j)  +/-  (4.34e-50, 2.33e-110j)
| (0.17997859286443830951 + 4.905234197386804223e-385j)  +/-  (2.05e-50, 1.1e-110j)
| (0.10576250815460243841 + 3.2934145072801718543e-385j)  +/-  (4.06e-51, 2.16e-111j)
| (0.17934180530025449292 - 3.5920534155245053713e-385j)  +/-  (5.88e-51, 3.17e-111j)
| (0.17997859286443830951 - 3.0939809424542232393e-385j)  +/-  (3.04e-51, 1.65e-111j)
| (0.16270071749446037232 - 8.1405293112509246535e-386j)  +/-  (1.38e-51, 7.38e-112j)
| (0.13488262293158453301 + 6.1463385647480365071e-385j)  +/-  (4e-51, 2.18e-111j)
| (0.16270071749446037232 + 3.1023389395990545495e-385j)  +/-  (4.85e-52, 2.39e-112j)
