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Manuscript Title: CONVUS - an efficient package for calculating three-dimensional convolution-type of integrals.
Authors: I.E. Lagaris, D.G. Papageorgiou
Program title: CONVUS - HIGH ENERGY
Catalogue identifier: ACNJ_v1_0
Distribution format: gz
Journal reference: Comput. Phys. Commun. 76(1993)80
Programming language: Fortran.
Computer: CONTROL DATA CD-4680.
Operating system: EP/IX 1.4.3, COS, A/IX, VM/CMS.
RAM: 6000K words
Word size: 32
Keywords: General purpose, Quadrature, Convolution 3-d, Numerical quadrature, Gauss-legendre, Gauss-chebychev.
Classification: 4.11.

Other versions:
Cat Id Title Reference
ACNI_v1_0 CONVUS - LOW ENERGY CPC 76(1993)80

Nature of problem:
Problems in physics, chemistry, applied mathematics as well as in other fields, are often in need of an efficient 3-D convolution quadrature.

Solution method:
Algebraic manipulation and repeated use of Gaussian integration.

Restrictions:
Care must be taken to choose the integration cut-off properly.

Running time:
Same as for the low memory version (10.2 seconds). However if many integrals are to be calculated, the required time for each additional integral is only 1.5 seconds.