Standard Library/dll

This script defines utilities for calling host system shared libraries and is included in the J standard library. Definitions are loaded into the z locale.

Definitions

A	AND
C	cd, cdcb, cder, cderx, cdf
E	endian, Endian
F	fc
I	ic
J	JB01, JBOXED, JCHAR, JCHAR2, JCHAR4, JCMPX, JFL, JINT, JPTR, JSB, JSIZES, JSTR, JSTR2, JSTR4, JTYPES
M	mema, memf, memr, memu, memw
O	OR
S	symdat, symget, symset, SZI
X	XOR

---

AND	v	bitwise AND (&)
cd	v	call DLL procedure
cdcb	v	callback address
cder	v	error information
cderx	v	GetLastError information
cdf	v	free DLLs
endian	v	flip intel bytes (little endian)
Endian	v	flip powerpc bytes (BIG Endian)
fc	v	float conversion
JB01	n	1
JBOXED	n	32
JCHAR	n	2
JCHAR2	n	131072
JCHAR4	n	262144
JCMPX	n	16
JFL	n	8
JINT	n	4
JPTR	n	JINT
JSB	n	65536
JSIZES	n	size in bytes of corresponding JTYPES
JSTR	n	_1,JCHAR
JSTR2	n	_1,JCHAR2
JSTR4	n	_1,JCHAR4
JTYPES	n	JB01,JCHAR,JINT,JPTR,JFL,JCMPX,JBOXED,JSB,JCHAR2,JCHAR4
mema	v	memory allocate
memf	v	memory free
memr	v	memory read
memu	v	forcecopy
memw	v	memory write
OR	v	)
symdat	v	get address of data for name
symget	v	get address of locale entry for name
symset	v	set array as address
SZI	n	size in bytes of integer
XOR	v	bitwise XOR (^)

ic (verb)

Integer conversion e.g.

   25185 25699 = _1 ic 'abcd'
   'abcd' = 1 ic _1 ic 'abcd'
   1684234849 1751606885 = _2 ic 'abcdefgh'
   'abcdefgh' = 2 ic _2 ic 'abcdefgh'