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Mathematics of Computation
Mathematics of Computation
ISSN 1088-6842(online) ISSN 0025-5718(print)


Chebyshev approximations for Dawson's integral

Authors: W. J. Cody, Kathleen A. Paciorek and Henry C. Thacher
Journal: Math. Comp. 24 (1970), 171-178
MSC: Primary 65.20
MathSciNet review: 0258236
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Abstract: Rational Chebyshev approximations to Dawson's integral are presented in well-conditioned forms for $ \vert x\vert \leqq 2.5, 2.5 \leqq \vert x\vert \leqq 3.5, 3.5 \leqq \vert x\vert \leqq 5.0$ and $ 5.0 \leqq \vert x\vert$. Maximal relative errors range down to between $ 2 \times {10^{ - 20}}$ and $ 7 \times {10^{ - 22}}$.

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PII: S 0025-5718(1970)0258236-8
Keywords: Rational Chebyshev approximations, Dawson's integral, complex error function
Article copyright: © Copyright 1970 American Mathematical Society

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