110369     CALC: An Interactive Computer Language with Unlimited
Numerical Precision  Version: March 1979
 
Submitted by: Markku Heikkinen, Geodetic Institute, Helsinki, Finland
 
Operating System: RT-11  Source Language: FORTRAN IV  Memory Required:
24K words  Keywords: Scientific Applications
 
Abstract: CALC accepts simple BASIC-like statements and performs
scientific computations with as many decimal digits as
the user wishes, the upper limit being determined by the
memory size of the computer. The variable names are
restricted to a single character from A to Z. There is
no DIM statement, only one array (called ARR) is
available. The programming feature is implemented using
files in auxiliary storage, the program size is limited
only by the file space. The fundamental trigonometric
and logarithmic functions are included. The internal
representation of numbers is the floating point binary
coded decimal.
 This routine ports trivially to VMS.
 
The CALC interpreter is coded in ANSI FORTRAN and has
been tested to work unaltered on both Univac 1108 under
Exec 8 and PDP-11/10 under RT-11. Approximately 100-200
decimal digits of precision can be used on a PDP-11/10
with 24K words of memory
 
Media (Service Charge Code): User's Manual (EC), 600' Magnetic Tape
(MA)  Format: RT-11