Rational Developer for System z
Enterprise PL/I for z/OS, Version 3.8, Language Reference Manual

UNSPEC

UNSPEC returns a bit string that is the internal coded form of x.

Read syntax diagramSkip visual syntax diagram>>-UNSPEC(x)---------------------------------------------------><
 
x
Scalar, array, structure, or union expression.

The UNSPEC built-in function is subject to the following rules:

Note:
Use of UNSPEC can affect the portability of your program.

The length of the returned bit string depends on the attributes of x, as shown in Table 63.

Table 63. Length of bit string returned by UNSPEC
Bit-String length Attribute of x
8
SIGNED FIXED BINARY(p,q), 1 <= p <= 7
UNSIGNED FIXED BINARY(p,q), 1 <= p <= 8
ORDINAL SIGNED PRECISION(p), 1 <= p <= 7
ORDINAL UNSIGNED PRECISION(p), 1 <= p <= 8
16
SIGNED FIXED BINARY(p,q), 8 <= p <= 15
UNSIGNED FIXED BINARY(p,q), 9 <= p <= 16
ORDINAL SIGNED PRECISION(p), 8 <= p <= 15
ORDINAL UNSIGNED PRECISION(p), 9 <= p <= 16
32
ENTRY LIMITED
SIGNED FIXED BINARY(p,q), 16 <= p <= 31
UNSIGNED FIXED BINARY(p,q), 17 <= p <= 32
ORDINAL SIGNED PRECISION(p), 16 <= p <= 31
ORDINAL UNSIGNED PRECISION(p), 17 <= p<= 32
FLOAT BINARY(p), 1 <= p <= 21
FLOAT DECIMAL(p), 1 <= p <= 6 if not DFP
FLOAT DECIMAL(p), 1 <= p <= 7 if DFP
OFFSET
FILE constant or variable
POINTER
HANDLE
64
SIGNED FIXED BINARY(p), 31 < p
UNSIGNED FIXED BINARY(p), 32 < p
FLOAT BINARY(p), 21 < p < 53
FLOAT DECIMAL(p), 7 <= p <= 16 if not DFP
FLOAT DECIMAL(p), 8 <= p <= 16 if DFP
LABEL constant or variable
ENTRY constant or variable
128
FLOAT BINARY(p), 54 <= p
FLOAT DECIMAL(p), 17 <= p
TASK
n BIT(n)
8*n CHARACTER(n)PICTURE (with character-string-value length of n)
16*n GRAPHIC(n)WIDECHAR(n)
16+n BIT(n) VARYING where n is the maximum length of x
16+(8*n) CHARACTER(n) VARYING where n is the maximum length of x
8+(8*n) CHARACTER(n) VARYINGZ where n is the maximum length of x
16+(16*n) GRAPHIC(n) VARYING where n is the maximum length of xWIDECHAR(n) VARYING where n is the maximum length of x
16+(16*n) GRAPHIC(n) VARYINGZ where n is the maximum length of xWIDECHAR(n) VARYINGZ where n is the maximum length of x
8*(n+16) AREA (n)
8*FLOOR(n)
FIXED DECIMAL (p,q) where n = (p+2)/2

Alignment and storage requirements for program-control data can vary across supported systems.

If x is a varying-length string, its two-byte prefix is included in the returned bit string. If x is an area, the returned value includes the control information.


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