April 1966 - Vol. 9 No. 4
Features
Information dissemination and publication control
The present issue contains a “Forum on Algorithms” dealing with some of the problems which arise in connection with the algorithm policy of the…
Debate is under way concerning the Algorithms section of the Communications. Specifically, there is considerable sentiment in favor of also publishing algorithms in…
A simple user-oriented compiler source language for programming automatic test equipment
For the nonprogrammer, difficulty in using a language increases rapidly with the number of nonproblem-oriented conventions. A simple language, even if inelegant, which…
A nonrecursive method of syntax specification
The use of the Kleene regular expression notation for describing algebraic language syntax, in particular of ALGOL, is described in this paper. A FORTRAN II computer…
Algorithm 279: Chebyshev quadrature
It has always been obvious that the aid to calculation offered by the computer forces a change in the curricula of mathematics, statistics, physics, engineering and other…
An ALGOL procedure is given for automatically generating formulas for matrix elements arising in the variational solution of the Schrödinger equation for…
A method for finding the least squares estimate of the intersection point of two Helices in space
When the helical trajectories of two charged particles moving away from a common point in a magnetic field are reconstructed from measurements on the tracks, the…
Methods of numerical integration applied to a system having trivial function evaluations
A study has been made to determine which methods of numerical integration require the least computation time for a given amount of truncation error when applied to a…
Starting approximations for square root calculation on IBM system /360
Several starting approximations for square root calculation by Newton's method are presented in a form to facilitate their use in IBM System/360 square root routines.…
Mechanization of the curve fitting process: DATAN
A process for fitting a curve to approximate data and the problem it creates for the engineer-programmer is defined. An approach has also been defined and a system has…
A method for locating zeros of complex functions
A method for computing the index, or winding number, is developed and applied to the problem of finding zeros of functions from the plane into the plane.