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{{Built-in|Atomic vector|⎕AV}} is the name of a 256-[[character]] [[vector]] which containes the entire character set of older APL implementations that did not support [[Unicode]], but instead used a single byte to store each character. Its value varies wildly between dialects, and can even differ between editions of the same dialect.
{{Built-in|Atomic vector|⎕AV}} is the name of a 256-[[character]] [[vector]] which contains the entire character set of older APL implementations that did not support [[Unicode]], but instead used a single byte to store each character. Its value varies wildly between dialects, and can even differ between editions of the same dialect.
 
[[Standards|ISO/IEC 13751:2001]] standard defined atomic vector as: "An implementation-defined character vector containing every member of the ''required character set'' exactly once".<ref>BS ISO/IEC 13751:2001: Information technology. Programming languages, their environments and system software interfaces. Programming language Extended APL. (2001).</ref>


== Value ==
== Value ==

Revision as of 20:51, 13 July 2020

⎕AV

Atomic vector (⎕AV) is the name of a 256-character vector which contains the entire character set of older APL implementations that did not support Unicode, but instead used a single byte to store each character. Its value varies wildly between dialects, and can even differ between editions of the same dialect.

ISO/IEC 13751:2001 standard defined atomic vector as: "An implementation-defined character vector containing every member of the required character set exactly once".[1]

Value

In the following, display of the the character sets are obtained using 16 16⍴mask\(mask←32≤⎕UCS ⎕AV)/⎕AV to replace control characters with spaces.

APL2

APL2 uses two primary values of ⎕AV, an ASCII-based value on personal computers, and an EBCDIC-based value on mainframes. The ASCII-based value is: 

                 
                
 !"#$%&'()*+,-./
0123456789:;<=>?
@ABCDEFGHIJKLMNO
PQRSTUVWXYZ[\]^_
`abcdefghijklmno
pqrstuvwxyz{|}~?
ÇüéâäàåçêëèïîìÄÅ
⎕⍞⌹ôöòûù⊤ÖÜø£⊥₧⌶
áíóúñѪº¿⌈¬½∪¡⍕⍎
░▒▓│┤⍟∆∇→╣║╗╝←⌊┐
└┴┬├─┼↑↓╚╔╩╦╠═╬≡
⍸⍷∵⌷⍂⌻⊢⊣⋄┘┌█▄¦Ì▀
⍺ß⊂⊃⍝⍲⍴⍱⌽⊖○∨⍳⍉∊∩
⌿⍀≥≤≠×÷⍙∘⍵⍫⍋⍒¯¨ 

APLX

In order to maximise the probability of being able to represent the text when converting from Unicode to internal representation, APLX accepts as input a number of alternative Unicode values for certain characters. However, these are automatically mapped to normalised character, and any unmappable characters are replaced with a question mark. 

      ⍐ ⍗ ⍇⍈ ⍱⍲
⍒⍋⌽⍉⊖⍟⌶⍫⍎⍕⍀⌿⍝⍞!⌹
 ¨)<≤=>]∨^≠÷,+./
0123456789([;×:\
¯⍺⊥∩⌊∊_∇{⍳∘'⎕|⊤○
*?⍴⌈~↓∪⍵⊃↑⊂←⊢→≥-
⋄ABCDEFGHIJKLMNO
PQRSTUVWXYZ∆⊣⍪$}

┌┐└┘─│┼├┤┴┬  Í
"#%&@£`≡≢⍷⍸  ⍤⍥⌷
ÄÅÇÉÑÖÜáàâäãåçéè
êëíìîïñóòô⍥õúùûü
ÀÃÕ  Ææ⍬Øø¿¡ßÿ
 abcdefghijklmno
pqrstuvwxyz⍙È€

Dyalog APL

⎕AV is obsolete in Dyalog APL since the Unicode Edition was introduced and is only retained for backwards compatibility.[2] It no longer contains all the glyphs used for primitive functions and operators[3], but can be adjusted by setting the Atomic Vector - Unicode (⎕AVU) variable to a list of Unicode code points. The default value is: 

          ⌶ɫ%'⍺⍵
_abcdefghijklmno
pqrstuvwxyz  ¯.⍬
0123456789 ⊢¥$£¢
∆ABCDEFGHIJKLMNO
PQRSTUVWXYZ  ý·?
⍙ÁÂÃÇÈÊËÌÍÎÏÐÒÓÔ
ÕÙÚÛÝþãìðòõ{€}⊣⌷
¨ÀÄÅÆ⍨ÉÑÖØÜßàáâä
åæçèéêëíîïñ[/⌿\⍀
<≤=≥>≠∨∧-+÷×?∊⍴~
↑↓⍳○*⌈⌊∇∘(⊂⊃∩∪⊥⊤
|;,⍱⍲⍒⍋⍉⌽⊖⍟⌹!⍕⍎⍫
⍪≡≢óôöø"# &´┘┐┌└
┼─├┤┴┬│@ùúû^ü`∣¶
:⍷¿¡⋄←→⍝)]  §⎕⍞⍣

GNU APL

GNU APL is fully Unicode-aware, and only includes the atomic vector for completeness: 

                
                
 !"#$%&'()*+,-./
0123456789:;<=>?
@ABCDEFGHIJKLMNO
PQRSTUVWXYZ[\]^_
`abcdefghijklmno
pqrstuvwxyz{|}~?
¥€⇄∧∼≬⋆⋸⌸⌺⌼μ⍁¡⍣⍅
⎕⍞⌹⍆⍤⍇⍈⍊⊤λ⍍⍏£⊥⍶⌶
⍐⍑χ≢⍖⍗⍘⍚⍛⌈⍜⍢∪⍨⍕⍎
⍬⍪∣│┤⍟∆∇→╣║╗╝←⌊┐
└┴┬├─┼↑↓╔╚╩╦╠═╬≡
⍸⍷∵⌷⍂⌻⊢⊣◊┘┌█▄▌▐▀
⍺⍹⊂⊃⍝⍲⍴⍱⌽⊖○∨⍳⍉∈∩
⌿⍀≥≤≠×÷⍙∘⍵⍫⍋⍒¯¨

External links

Documentation

References

  1. ↑ BS ISO/IEC 13751:2001: Information technology. Programming languages, their environments and system software interfaces. Programming language Extended APL. (2001).
  2. ↑ Bernard Legrand. Mastering Dyalog APL (page 525). Dyalog Ltd. November 2009.
  3. ↑ Adám Brudzewsky SBCS (Single Byte Character Set) Usage
APL built-ins [edit]
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Scalar
Monadic Conjugate ∙ Negate ∙ Signum ∙ Reciprocal ∙ Magnitude ∙ Exponential ∙ Natural Logarithm ∙ Floor ∙ Ceiling ∙ Factorial ∙ Not ∙ Pi Times ∙ Roll ∙ Type ∙ Imaginary ∙ Square Root ∙ Round
Dyadic Add ∙ Subtract ∙ Times ∙ Divide ∙ Residue ∙ Power ∙ Logarithm ∙ Minimum ∙ Maximum ∙ Binomial ∙ Comparison functions ∙ Boolean functions (And, Or, Nand, Nor) ∙ GCD ∙ LCM ∙ Circular ∙ Complex ∙ Root
Non-Scalar
Structural Shape ∙ Reshape ∙ Tally ∙ Depth ∙ Ravel ∙ Enlist ∙ Table ∙ Catenate ∙ Reverse ∙ Rotate ∙ Transpose ∙ Raze ∙ Mix ∙ Split ∙ Enclose ∙ Nest ∙ Cut (K) ∙ Pair ∙ Link ∙ Partitioned Enclose ∙ Partition
Selection First ∙ Pick ∙ Take ∙ Drop ∙ Unique ∙ Identity ∙ Stop ∙ Select ∙ Replicate ∙ Expand ∙ Set functions (Intersection ∙ Union ∙ Without) ∙ Bracket indexing ∙ Index ∙ Cartesian Product ∙ Sort
Selector Index generator ∙ Grade ∙ Index Of ∙ Interval Index ∙ Indices ∙ Deal ∙ Prefix and suffix vectors
Computational Match ∙ Not Match ∙ Membership ∙ Find ∙ Nub Sieve ∙ Encode ∙ Decode ∙ Matrix Inverse ∙ Matrix Divide ∙ Format ∙ Execute ∙ Materialise ∙ Range
Operators Monadic Each ∙ Commute ∙ Constant ∙ Replicate ∙ Expand ∙ Reduce ∙ Windowed Reduce ∙ Scan ∙ Outer Product ∙ Key ∙ I-Beam ∙ Spawn ∙ Function axis ∙ Identity (Null, Ident)
Dyadic Bind ∙ Compositions (Compose, Reverse Compose, Beside, Withe, Atop, Over) ∙ Inner Product ∙ Determinant ∙ Power ∙ At ∙ Under ∙ Rank ∙ Depth ∙ Variant ∙ Stencil ∙ Cut ∙ Direct definition (operator) ∙ Identity (Lev, Dex)
Quad names Index origin ∙ Comparison tolerance ∙ Migration level ∙ Atomic vector
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