We describe f 2c, a program that translates Fortran 77 into C or C++. F 2c lets one portably mix C and Fortran and makes a large body of well-tested Fortran source code available to C environments. 1.

We describe f 2c, a program that translates Fortran 77 into C or C++. F2c lets one portably mix C and Fortran and makes a large body of well-tested Fortran source code available to C environments.

A suite of computer programs for the evaluation of Bessel functions and modified Bessel functions of orders zero and one for a vector of real arguments is described. Distinguishing characteristics of these programs are that (a) they are portable across a wide range of machines, and (b) they are vectorized in the case when multiple function evaluations are to be performed. The performance of the new programs are compared with software from the FNLIB collection of Fullerton on which the new software is based. Categories and Subject Descriptors: G.1.0 [Numerical Analysis]: General---parallel algorithms; G.1.2 [Numerical Analysis]: Approximation---Chebyshev approximation and theory, elementary function approximation; G.4 [Mathematics of Computing]: Mathematical Software---algorithm analysis, efficiency, portability General Terms: Algorithms Additional Keywords and Phrases: Bessel function, hyperbolic Bessel function, mathematical software, modified Bessel function, order zero and one, p...

. This document is an excerpt from the current hypertext version of an article that appeared in Walter Gautschi (ed.), Mathematics of Computation 1943--1993: A Half-Century of Computational Mathematics, Proceedings of Symposia in Applied Mathematics 48, American Mathematical Society, Providence, RI 02940, 1994. The symposium was held at the University of British Columbia August 9--13, 1993, in honor of the fiftieth anniversary of the journal Mathematics of Computation. The original abstract follows. Higher transcendental functions continue to play varied and important roles in investigations by engineers, mathematicians, scientists and statisticians. The purpose of this paper is to assist in locating useful approximations and software for the numerical generation of these functions, and to offer some suggestions for future developments in this field. 4.7. Zeta Function. 4.7.1. Real Arguments. Algorithms: [CHT71], [Luk69b], [PB72]. Software Packages: [Mar65, Algol]. Intermediate Libr...

A suite of computer programs for the evaluation of Bessel functions and modified Bessel functions of orders zero and one for a vector of real arguments is described.

H. Byrd 3 Janet E. Rogers 4 Robert B. Schnabel 5 1