ASE2 CARD CATALOG ENTRY

Instructions:

ASSET OVERVIEW

UNIT NAME

Emulation of Machine Arithmetic

VERSION
1.0
REVIEW CODE
AR; C1 1.0 A
INET ADDRESS
AUTHOR
SYSCON Corp
3990 Sherman Street
San Diego, CA 92110
John Reddan
(619) 296-0085
Contact: Lt. Colonel Falgiano
ESD/SCW
Hanscom AFB, MA 01731
RIGHTS
PUBLIC DOMAIN
COPYRIGHT
(c) 1985, SYSCON Corp
DATE CREATED
June, 1985
DATE RELEASED
June, 1985
DATE LAST UPDATED
June, 1985
LOCATION
ASR
ENVIRONMENT
VAX/VMS TeleSoft
LIMITATIONS
CERTIFICATION 
Ada System Certifier_1 1.0
Date/Time of Processing: Monday    30 May       1994 11:28:40Am
Overall Assessment of System: OK
Classification of System: A
Basis of Classification --
    Syntax Errors                               PASS
    Completeness                                PASS
    Independence from External Libraries        PASS
    Independence from a Specific Ada Compiler   PASS

Number of ...
  Files               1
  Library Units      10
  Lines            6521
  Statements       2696
  Comments         1490

CLASSIFICATION

KEYWORD
INDEX
Emulation
Arithmetic
Machine Arithmetic
Reddan, John
Syscon Corp
DEPENDENCIES
SEE ALSO
WIS_TOOL_20_2
SHORT DESCRIPTION
36-bit machine arithmetic on a 32-bit machine
TAXONOMY


Software Components
    Math Library
      36-Bit Machine Arithmetic

FILE LISTING

FILE SPECS
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ABSTRACT

M36 Math Library

The purpose of this package is to emulate 36 bit machine host arithmetic on a 32 bit host machine. This package will provide support for 36 bit integer, real, and double precision real numbers in the form of the standard predefined arithmetic operations. The ranges of the supported types are as follows: 

Integer
range of -2**35 to 2**35-1
Real
range of 10**-38 to 10**38 and 0
mantissa => 27 bit binary fraction
exponent => -128 to 127
Double Precision Real
range of 10**-38 to 10**38 and 0
mantissa => 63 bit binary fraction
exponent => -128 to 127

Any errors which occur during use of the arithmetic exception declaration in the package specification can be changed to a rename of the predefined exception "NUMERIC_ERROR" for programs needing to handle arithmetic errors in a general fashion. Conversion functions are provided to assist in programming mixed operand (32 and 36 bit) arithmetic, and to facilitate IO. These functions should be renamed if they will be used extensively so that the impact of the readability of a program's arithmetic expressions is minimized. The underlying arithmetic will be performed in twos complement arithmetic.

REVISION HISTORY 

DATE           VERSION AUTHOR                  HISTORY 
6/85           1.0     SYSCON                  Initial Release

RELEASE NOTICE 

This prologue must be included in all copies of this software.
This software is copyright by the author.
This software is released to the Ada community.
This software is released to the Public Domain (note:
  software released to the Public Domain is not subject
  to copyright protection).
Restrictions on use or distribution:  NONE

DISCLAIMER 

	This software and its documentation are provided "AS IS" and
without any expressed or implied warranties whatsoever.  No warranties
as to performance, merchantability, or fitness for a particular
purpose exist.
	The user is advised to test the software thoroughly before
relying on it.  The user must assume the entire risk and liability of
using this software.  In no event shall any person or organization of
people be held responsible for any direct, indirect, consequential or
inconsequential damages or lost profits.








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