Four-Word Floating-Point Package

This document describes the Four-Word Floating-Point Package, which is a variant of the standard 3-word floating-point package (Digital-8-5-S) designed to provide 35 bits of accuracy. The document outlines requirements, usage, storage locations (7, 40-61, 5600-7577 octal), and provides a detailed assembly language program listing for the floating-point arithmetic interpreter.