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11: 36 Integrals with Coalescing Saddles
12: Bibliography L
  • D. F. Lawden (1989) Elliptic Functions and Applications. Applied Mathematical Sciences, Vol. 80, Springer-Verlag, New York.
  • P. W. Lawrence, R. M. Corless, and D. J. Jeffrey (2012) Algorithm 917: complex double-precision evaluation of the Wright ω function. ACM Trans. Math. Software 38 (3), pp. Art. 20, 17.
  • D. J. Leeming (1977) An asymptotic estimate for the Bernoulli and Euler numbers. Canad. Math. Bull. 20 (1), pp. 109–111.
  • D. R. Lehman, W. C. Parke, and L. C. Maximon (1981) Numerical evaluation of integrals containing a spherical Bessel function by product integration. J. Math. Phys. 22 (7), pp. 1399–1413.
  • L. Lorch (2002) Comparison of a pair of upper bounds for a ratio of gamma functions. Math. Balkanica (N.S.) 16 (1-4), pp. 195–202.
  • 13: Bibliography F
  • B. R. Fabijonas, D. W. Lozier, and J. M. Rappoport (2003) Algorithms and codes for the Macdonald function: Recent progress and comparisons. J. Comput. Appl. Math. 161 (1), pp. 179–192.
  • FDLIBM (free C library)
  • S. Fempl (1960) Sur certaines sommes des intégral-cosinus. Bull. Soc. Math. Phys. Serbie 12, pp. 13–20 (French).
  • H. E. Fettis and J. C. Caslin (1964) Tables of Elliptic Integrals of the First, Second, and Third Kind. Technical report Technical Report ARL 64-232, Aerospace Research Laboratories, Wright-Patterson Air Force Base, Ohio.
  • G. Freud (1969) On weighted polynomial approximation on the whole real axis. Acta Math. Acad. Sci. Hungar. 20, pp. 223–225.
  • 14: 6.20 Approximations
  • Cody and Thacher (1968) provides minimax rational approximations for E 1 ( x ) , with accuracies up to 20S.

  • Cody and Thacher (1969) provides minimax rational approximations for Ei ( x ) , with accuracies up to 20S.

  • MacLeod (1996b) provides rational approximations for the sine and cosine integrals and for the auxiliary functions f and g , with accuracies up to 20S.

  • Clenshaw (1962) gives Chebyshev coefficients for E 1 ( x ) ln | x | for 4 x 4 and e x E 1 ( x ) for x 4 (20D).

  • 15: 27.15 Chinese Remainder Theorem
    Their product m has 20 digits, twice the number of digits in the data. …These numbers, in turn, are combined by the Chinese remainder theorem to obtain the final result ( mod m ) , which is correct to 20 digits. …
    16: William P. Reinhardt
  • In November 2015, Reinhardt was named Senior Associate Editor of the DLMF and Associate Editor for Chapters 20, 22, and 23.
    17: 28.5 Second Solutions fe n , ge n
    (Other normalizations for C n ( q ) and S n ( q ) can be found in the literature, but most formulas—including connection formulas—are unaffected since fe n ( z , q ) / C n ( q ) and ge n ( z , q ) / S n ( q ) are invariant.) …
    See accompanying text
    Figure 28.5.1: fe 0 ( x , 0.5 ) for 0 x 2 π and (for comparison) ce 0 ( x , 0.5 ) . Magnify
    See accompanying text
    Figure 28.5.2: fe 0 ( x , 1 ) for 0 x 2 π and (for comparison) ce 0 ( x , 1 ) . Magnify
    See accompanying text
    Figure 28.5.3: fe 1 ( x , 0.5 ) for 0 x 2 π and (for comparison) ce 1 ( x , 0.5 ) . Magnify
    See accompanying text
    Figure 28.5.4: fe 1 ( x , 1 ) for 0 x 2 π and (for comparison) ce 1 ( x , 1 ) . Magnify
    18: 6.19 Tables
  • Zhang and Jin (1996, pp. 652, 689) includes Si ( x ) , Ci ( x ) , x = 0 ( .5 ) 20 ( 2 ) 30 , 8D; Ei ( x ) , E 1 ( x ) , x = [ 0 , 100 ] , 8S.

  • Abramowitz and Stegun (1964, Chapter 5) includes the real and imaginary parts of z e z E 1 ( z ) , x = 19 ( 1 ) 20 , y = 0 ( 1 ) 20 , 6D; e z E 1 ( z ) , x = 4 ( .5 ) 2 , y = 0 ( .2 ) 1 , 6D; E 1 ( z ) + ln z , x = 2 ( .5 ) 2.5 , y = 0 ( .2 ) 1 , 6D.

  • Zhang and Jin (1996, pp. 690–692) includes the real and imaginary parts of E 1 ( z ) , ± x = 0.5 , 1 , 3 , 5 , 10 , 15 , 20 , 50 , 100 , y = 0 ( .5 ) 1 ( 1 ) 5 ( 5 ) 30 , 50 , 100 , 8S.

  • 19: Peter L. Walker
    20: Staff
  • William P. Reinhardt, University of Washington, Chaps. 20, 22, 23

  • Peter L. Walker, American University of Sharjah, Chaps. 20, 22, 23

  • William P. Reinhardt, University of Washington, for Chaps. 20, 22, 23

  • Peter L. Walker, American University of Sharjah, for Chaps. 20, 22, 23