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SHARP APL (view source)

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{{Infobox array language
| logo                    = [[File:Sharp APL logo.png]]
| array model              = [[Flat array model|flat]] with [[Box|boxes]]
| index origin            = 0 or 1
| function styles          = [[defined function]]s
| numeric types            = [[complex]] floats
| unicode support          = none
| released                = 1976 via [[time-sharing]]; around 1979 as a product
| withdrawn                = around 1993
| latest release          = 002.140 / 1988
| platforms                = S/370, x86
| operating systems        = DOS/390, DOS, UNIX (AIX, Solaris), Linux
| license                  = Free for personal use / Proprietary commercial software
| developer                = [[I.P. Sharp Associates]]
| influenced by            = [[APL\360]]
| influenced              = [[SAX]], [[J]], [[A+]], [[K]], [[Dyalog APL]], [[SHARP APL/HP]]
| file ext                = .saw, .saf, .sam
| download                = [http://www.sigapl.org/Archives/waterloo_archive/apl/sharp.apl/index.html SIGAPL]
}}
[[File:Old SHARP APL.png|thumb|right|SHARP APL running under DOSBox]]
'''SHARP APL''' was an APL implementation offered by [[I.P. Sharp Associates]] (IPSA), originally as part of its [[time-sharing]] service and later as a stand-alone product. It was split off from [[STSC]]'s [[APL*PLUS]], which until then had been sold jointly by the two companies. SHARP APL was the source of many developments in [[flat array theory]], driven by [[Ken Iverson]] and other APL designers at IPSA.
== Primitive functions ==
== Primitive functions ==


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| <source lang=apl inline>@</source> ||  || See [[#Miscellaneous|Miscellaneous]] || 0 ∞ || [[Squad Index|From]]
| <source lang=apl inline>@</source> ||  || See [[#Miscellaneous|Miscellaneous]] || 0 ∞ || [[Squad Index|From]]
|-
|-
| <source lang=apl inline>⍳</source> || 1 || [[Iota|Count]]                       || 1 0 || [[Index Of]]
| <source lang=apl inline>⍳</source> || 1 || [[Index Generator|Count]]           || 1 0 || [[Index Of]]
|-
|-
| <source lang=apl inline>⍸</source> ||  ||                                      || ∞ ∞ || [[Indices of Match|Index]]
| <source lang=apl inline>⍸</source> ||  ||                                      || ∞ ∞ || [[Indices of Match|Index]]
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== Primitive Operators ==
== Primitive Operators ==
=== Operators ===


{| class=wikitable
{| class=wikitable
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| <source lang=apl inline>¨</source> || <source lang=apl inline>f</source> || <source lang=apl inline>g</source> || <source lang=apl inline>mg</source> || <source lang=apl inline>mg mg</source> ||colspan=2| [[close Under|Under]]
| <source lang=apl inline>¨</source> || <source lang=apl inline>f</source> || <source lang=apl inline>g</source> || <source lang=apl inline>mg</source> || <source lang=apl inline>mg mg</source> ||colspan=2| [[close Under|Under]]
|-
|-
| <source lang=apl inline>¨</source> || <source lang=apl inline>m</source> || <source lang=apl inline>g</source> || <source lang=apl inline>mg</source> ||                                        || [[With]]                       ||
| <source lang=apl inline>¨</source> || <source lang=apl inline>m</source> || <source lang=apl inline>g</source> || <source lang=apl inline>mg</source> ||                                        ||rowspan="2"|With ([[Bind]])    ||
|-
|-
| <source lang=apl inline>¨</source> || <source lang=apl inline>f</source> || <source lang=apl inline>n</source> || <source lang=apl inline>mf</source> ||                                        || [[With]]                        ||
| <source lang=apl inline>¨</source> || <source lang=apl inline>f</source> || <source lang=apl inline>n</source> || <source lang=apl inline>mf</source> ||                                        ||
|-
|-
| <source lang=apl inline>.</source> || <source lang=apl inline>f</source> || <source lang=apl inline>g</source> || <source lang=apl inline>2</source>  || <source lang=apl inline>∞  ∞</source>  || [[Alternant]]                  || [[Inner Product|Inner-product]]
| <source lang=apl inline>.</source> || <source lang=apl inline>f</source> || <source lang=apl inline>g</source> || <source lang=apl inline>2</source>  || <source lang=apl inline>∞  ∞</source>  || [[Alternant]]                  || [[Inner Product|Inner-product]]
|-
|-
| <source lang=apl inline>.</source> || <source lang=apl inline>m</source> || <source lang=apl inline>g</source> ||                                    || <source lang=apl inline>∞  ∞</source>  ||                                || [[Tie]], [[Outer Produce|Outer-product]]
| <source lang=apl inline>.</source> || <source lang=apl inline>m</source> || <source lang=apl inline>g</source> ||                                    || <source lang=apl inline>∞  ∞</source>  ||                                || [[Tie]], [[Outer Product|Outer-product]]
|-
|-
| <source lang=apl inline>.</source> || <source lang=apl inline>f</source> || <source lang=apl inline>m</source> || <source lang=apl inline>mf</source> ||                                        || [[Ply]]                        ||
| <source lang=apl inline>.</source> || <source lang=apl inline>f</source> || <source lang=apl inline>m</source> || <source lang=apl inline>mf</source> ||                                        || [[Ply]]                        ||
|}
|}
== Implementation ==
=== Numeric types ===
SHARP originally supported only real numbers using double (8-byte) precision. Numbers were stored in one of three types:
* Boolean, with one bit per value
* Integer, with four bytes per value
* Floating, with eight bytes per value
[https://www.jsoftware.com/papers/satn40.htm SATN-40] describes the addition of complex numbers to SHARP APL.
== SHARP APL Technical Notes ==
Features of SHARP APL were documented in "technical notes" issued by IPSA. These notes are numbered following the scheme "SATN-0". Earlier notes typically had no author listed. A [https://www.jsoftware.com/papers/SATN.pdf pdf collection] of SHARP APL Technical Notes is hosted at jsoftware.com, as are html transcriptions of some notes, linked in the table below.
{|class=wikitable
! Number !! Issued !!colspan=2| Revised !! Author            !! Title
|-
|  0 || 1976-01-01 ||  ||            ||                      || SATN Introduction
|-
|  1 || 1976-01-01 ||  ||            ||                      || TASKID
|-
|  2 ||            || 5 || 1979-02-14 ||                      || Control Messages
|-
|  3 || 1976-01-01 ||  ||            ||                      || ⎕OUT
|-
|  4 ||            || 2 || 1978-04-01 ||                      || N-tasks and B-tasks
|-
|  5 ||            || 2 || 1978-08-01 ||                      || Batch APL
|-
|  6 || 1976-01-01 ||  ||            ||                      || [[Execute]]
|-
|  7 || 1976-01-01 ||  ||            ||                      || Latent Expression
|-
|  8 ||            || 2 || 1978-03-01 ||                      || HSPRINT
|-
|  9 ||            || 1 || 1979-08-01 || John D. Burger      || Usage Inquiry System
|-
| 10 ||            || 2 || 1978-06-01 ||                      || SORTREQ
|-
| 11 || 1976-01-01 ||  ||            ||                      || )RESET
|-
| 12 || 1976-01-01 ||  ||            ||                      || )COPY
|-
| 13 || 1978-03-10 ||  ||            ||                      || Early Warnings
|-
| 14 ||            || 2 || 1978-08-15 ||                      || Package - A New Variable Type
|-
| 15 ||            ||  ||            ||                      || Index
|-
| 16 || 1976-04-20 ||  ||            ||                      || File System Must-Write Buffers
|-
| 17 || 1976-06-01 ||  ||            ||                      || Formatting Primitive
|-
| 18 || 1976-07-01 ||  ||            ||                      || ⎕FMT
|-
| 19 || 1977-01-01 ||  ||            ||                      || Fileprint
|-
| 20 ||            || 4 || 1978-06-01 ||                      || System Variables, Session Variables and System Functions
|-
| 21 ||            || 1 || 1978-06-01 ||                      || ⎕WS and ⎕FD
|-
| 22 ||            || 2 || 1979-01-01 || [[Bob Bernecky]] and Mike Symes || APL Worspace Transfer
|-
| 23 || 1977-06-10 || 1 || 1978-07-15 || [[Bob Bernecky]]    || [[Comparison tolerance|Comparison Tolerance]] ([https://www.jsoftware.com/papers/satn23.htm web])
|-
| 24 || 1977-03-23 ||  ||            ||                      || Symbol Table
|-
| 25 || 1977-05-15 ||  ||            ||                      || Extensions to Argument Passing
|-
| 26 || 1977-09-10 ||  ||            ||                      || Enhancements to the File System
|-
| 28 || 1977-07-11 ||  ||            ||                      || Terminal Control
|-
| 29 || 1978-06-15 ||  ||            ||                      || System Time and Timestamps
|-
| 30 || 1979-01-01 ||  ||            ||                      || Numeric Display
|-
| 31 || 1979-02-01 ||  ||            ||                      || [[Line editor|Line Editing]] in SHARP APL
|-
| 32 || 1979-03-30 ||  ||            ||                      || Shared Variables
|-
| 33 || 1979-03-26 ||  ||            ||                      || Event Trapping
|-
| 34 || 1980-08-15 ||  ||            || [[Bob Bernecky]]    || [[Replicate|Replication]]
|-
| 35 || 1980-08-15 ||  ||            || Peter Wooster        || Extended [[Grade|Upgrade and Downgrade]]
|-
| 36 || 1980-04-20 ||  ||            || [[Ken Iverson]]      || [[Direct definition|Direct Definition]]
|-
| 37 ||            || 1 || 1982-06-01 || John D. Burger      || IBM 3270 User Guide
|-
| 39 || 1981-06-01 ||  ||            || [[Richard Lathwell]] || [https://www.jsoftware.com/papers/satn39.htm The SHARP APL S-task Interface]
|-
| 40 || 1981-06-20 ||  ||            || [[Eugene McDonnell]] || [[Complex number|Complex Numbers]] ([https://www.jsoftware.com/papers/satn40.htm web])
|-
| 41 || 1981-06-20 ||  ||            || [[Ken Iverson]]      || [[Close composition|Composition]] and [[Box function|Enclosure]] ([https://www.jsoftware.com/papers/satn41.htm web])
|-
| 42 || 1982-04-01 ||  ||            || [[Ken Iverson]]      || [[Determinant]]-Like Functions Produced by the Dot-Operator ([https://www.jsoftware.com/papers/satn42.htm web])
|-
| 43 || 1982-11-05 ||  ||            || Peter Wooster        || Improved Display for Enclosed Arrays and a New System Variable ⎕PS
|-
| 44 || 1983-04-02 ||  ||            || Robert C. Metzger    || Enhancements to Event Handling
|-
| 45 || 1983-05-02 ||  ||            || Various              || [https://www.jsoftware.com/papers/satn45.htm Language Extensions of May 1983]
|-
| 46 || 1983-08-05 ||  ||            || [[Eric Iverson]]    || Enhancements Provided in Update #1 to the May 1983 Release of SHARP APL
|-
| 47 || 1983-10-01 ||  ||            || Mike Symes          || IBM 3270 User Guide (IDSH)
|-
| 48 || 1983-11-30 ||  ||            || John D. Burger      || Workspace 1 HCPRINT
|}
{{APL dialects}}[[Category:APL dialects]][[Category:Flat array languages]][[Category:Leading axis languages]]
Retrieved from ‘https://aplwiki.com/wiki/Special:MobileDiff/874...6805’

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