(0x3ff0000000000000 + 0xbc09fda20235c100) + x * ((0x3b29ecd485d34781 + 0xb7c1cbc97120359a) + x * (0xbfdfffffffffff98 + x * (0xbbfa6e0b3183cb0d + x * (0x3fa5555555145337 + x * (0x3ca3540480618939 + x * 0xbf56c138142d8c3b)))))
x * (1 + x^2 * (-357913941 * 2^(-31) + x^2 * (35789873 * 2^(-32))))
1 + x * (1 + x * (1 * 2^(-1) + x * (375300225001191 * 2^(-51) + x * (5592621 * 2^(-27)))))
Error of pstar: 41623862533526995219855274593333067596572580995543 * 2^(-215)
Error of P1: 41623862533526995249852857301809387823617141062435 * 2^(-215)
Error of P2: 43429285529967733230721931906794206008049814555029 * 2^(-215)
Error of P3: 28553921171649539207471988588453621507466219169379 * 2^(-214)
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