Computer Physics Communications Program LibraryPrograms in Physics & Physical Chemistry |

[Licence| Download | New Version Template] acgo_v1_0.gz(4 Kbytes) | ||
---|---|---|

Manuscript Title: Parabolic cylinder functions U(n,x) for natural n and positive x. | ||

Authors: G. Taubmann | ||

Program title: PARACYL | ||

Catalogue identifier: ACGO_v1_0Distribution format: gz | ||

Journal reference: Comput. Phys. Commun. 69(1992)415 | ||

Programming language: Fortran. | ||

Computer: VAX 9410. | ||

Operating system: VMS 5.4, UNIX. | ||

RAM: 86K words | ||

Word size: 32 | ||

Keywords: General purpose, Parabolic cylinder, Functions, U(n, x). | ||

Classification: 4.7. | ||

Nature of problem:The parabolic cylinder functions U(n,x) occur frequently in statistical thermodynamics. A subroutine for the calculation of the U(n,x) for natural n is provided. | ||

Solution method:Depending on the values of n and x, series expansions, asymptotic expansions, and backward recurrence are used. | ||

Restrictions:n=0,1,2,... 100, 0<= x <=100 | ||

Unusual features:In some of the routines quadruple precision must be used. On a VAX, the use of the qualifier /g_float is necessary in order to avoid over- and underflow. | ||

Running time:0.1 seconds on VAX 9410 and 2.6 seconds on HP 9000/825 |

Disclaimer | ScienceDirect | CPC Journal | CPC | QUB |