C Source Code Conventions and Abbreviations Dictionary

NARS C Source Code Conventions and Abbreviations Dictionary:

Conventions

Convention	Syntax	Description/Where Used	Sample Use	Purpose
PrimFn	Prefix	name prefix to all Primary APL functions	PrimFnRho_EM_YY	Quickly identify such names
SysFn	Prefix	name prefix to all Quad type System Functions	SysFnWA_EM_YY	Quickly identify such names
_EM_YY	Suffix	name suffix to all Primary APL functions AND Quad System Functions, including monadic and dyadic calls	SysFnTS_EM_YY	Quickly identify such names, referencing

Abbreviations Dictionary

Abbrev	Meaning	Definition Location, Purpose, Cross Ref's	Sample Source Code Usage
lp	long pointer	Usually found as a prefix to variable names. NARS makes frequent use of pointers to speed up processing times, to make NARS2000.exe more efficient.	lptkRhtArg (var name; long ptr to token var structure of a right hand argument for a function call)
NELM	Number of Elements	Usually embedded within variable names. Conceptually like Rho or ⍴ of a vector.	APLNELM aplNELMRht; // VarType VarName; Right arg NELM for variable type(APLNELM) and variable named aplNELMRht
PerTab	per tab, esp. per APL workspace tab	Embedded in var names. Detailed explanation of PerTab found in C source header file <pertab.h>. NARS supports multiple simultaneously open and running workspaces. Each workspace is displayed as a separate Tab, much like folder tabs. All variables in all workspace are distinctly maintained, with each PerTab.	LPPERTABDATA lpMemPTD; where LPPERTABDATA is the variable type and lpMemPTD is a pointer to PerTabData global memory
PTD	per tab of data	Embedded in var names. Each NARS workspace is kept separate and distinct in its own PTD.	lpMemPTD structured var name, in this case a ptr to PerTabData global memory
Rank	Rank	Rank: Scalars=0, Vectors=1, Matrices=2..N. Like ⍴⍴ of an APL variable or contained data structure, see shape of the shape RhoRho or ⍴⍴.	APLRANK aplRankLft // Left arg rank (variable type, variable name)
SIS	State Indicator Stack	Frequently embedded within variable and function names. Detailed explanation of SIS found in C source header file <sis.h> See also APL's System Command )SI.	lpMemPTD->lpSISCur->ResetFlag; (var name) AND FillSISNxt (fcn name)
tk	token	Frequently found embedded in structured variable names. Tokens are basic building blocks of C Programming; hence tk vars frequently represent important structured variables in NARS.	LPTOKEN lptkRhtArg
TKT_	token type	Prefix to typed variable names. Most tokens are simple in that they have type and data only.e,g, TKT_LEFTPAREN and '('. Some frequently used tokens are complex in that their data points to other data. Token types are also associated with a Constant type value, e.g. TKT_VARARRAY = 1A(Hex val, 26 dec val). Token types may also represent APL/System Functions - TKT_FCNNAMED (52 hex) = a named function. Full explanation see file <tokens.h>. See also typedef structures TOKEN.	TKT_VARARRAY - main workhorse token type. Its tkData is an HGLOBAL (global memory handle) which contains an array which is either simple, nested, or mixed(combination of diff data types, e.g. string int float and or double).
UTF	Unicode Transformation Format	Variable names, constants, especially UTF16; algorithmic mapping for Unicode code numbers (except surrogate code points) to unique byte sequencing (esp. 16-bit 2-byte sequences). ASCII uses 2^7 bits=128 codes; EBSDIC 2^8=256 codes. Unicode 2-byte uses 2^16=65,536 codes, as currently does NARS, see also System Functions ⎕AV and ⎕UCS. Both the 32-bit and 64-bit NARS2000.exe's use 16-bit uncodes; the 32 and 64 bit NARS exe's refer to numeric data computer representations and calculation precisions. List of defined UTF16_ vars see file <Unicode.h>.	UTF16_RHO