Author: Donald A. Overton, Ph.D., Eastern Pennsylvania Psychiatric Institute, Philadelphia, Pennsylvania

The DBLFLT routines are LINC mode programs which perform mathematical operations using a double precision mantissa and a 12-bit exponent to obtain an effective accuracy of about 7 decimal digits. The program DBLFLT by Michael McDonald and an altered version called DBLFLTI each require two quarters of memory and provide the basic mathematical operations (add, subtract, multiply, divide, fix, float). A larger routine called DBLFLT3 is derived from DECUS NO. L-68. It occupies seven quarters of memory located outside the current instruction field and provides a variety of commonly used mathematical functionsl(square root, sine, cosine, log, arctangent, etc.) as well as routines for teletype input and output.

Source Language: LAP6-DIAL

Catalog: July 1974