Sine and Cosine Subroutines for the PDP-1 Computer

This document is a 1960 interoffice memorandum (M-1094) from Chas. W. Adams Associates providing sine and cosine subroutines for the PDP-1 computer. It defines the numerical representation of the arguments (sign and three binary integer positions) and the expected result format. The document includes the required calling sequences and the complete assembly language instructions for the subroutines, acknowledging that these routines were supplied to the Digital Equipment Corporation.