HLASM Language Reference

SETA Instruction
expression
is an arithmetic expression evaluated as a signed 32-bit arithmetic value that is
assigned to the SETA symbol in the name field. The minimum and maximum
allowable values of the expression are −2 31 and +2 31 −1, respectively.
Figure 97 defines an arithmetic expression.
┌───────────┐
│
│
│Arithmetic │
│Expression │
│
│
└─────┬─────┘
│
▼ Can be any of
├────────────┬──────────┬────────────────────────────┬────────────────────┬──────────┐
▼ ▼ ▼ ▼ ▼ ▼
┌─────┴─────┐ ┌────┴────┐ ┌───┴───┬─────────┬───────┐ ┌────┴──────────────┐ ┌───┴────┐ ┌───┴────┐
│Arithmetic │ │ (Arith. │ │ Arith.│ Binary │ Arith.│ │ Arithmetic-Valued │ │+Arith. │ │-Arith. │
│Term │ │ Exp.) │ │ Exp. │ Operator│ Exp. │ │ Built-in Function │ │▲ Exp. │ │▲ Exp. │
└─────┬─────┘ └─────────┘ └───────┴─────────┴───────┘ └───────────────────┘ └┼───────┘ └┼───────┘
│
└────┬─────┘
▼ Can be any of
│
├─────────────┬─────────────┬─────────────┐
unary operators
▼ ▼ ▼ ▼
┌─────┴─────┐ ┌─────┴─────┐ ┌─────┴─────┐ ┌─────┴─────┐
│ │ │Predefined │ │ Self- │ │ │
│ Variable │ │Absolute │ │ Defining │ │ Attribute │
│ Symbol │ │Ordinary │ │ Term │ │ Reference │
│ │ │Symbol │ │ │ │ │ Operators Allowed
└───────────┘ └───────────┘ └───────────┘ └─────┬─────┘
│ Unary: + Positive
│
– Negative
│ Can
▼ only be Binary: + Addition
┌─────┴─────┐
– Subtraction
│ Length │ Multiplication
│ Scale │ / Division
│ Integer │
│ Count │
Arith. Exp. = Arithmetic Expression │ Number │
│ Defined │
└───────────┘
Figure 97. Defining Arithmetic (SETA) Expressions
Figure 98 shows the variable symbols that are allowed as terms in an arithmetic
expression.
Figure 98 (Page 1 of 2). Variable Symbols Allowed as Terms in Arithmetic Expressions
Variable symbol Restrictions Example Valid value
SETA None --- ---
SETB None --- ---
SETC
Symbolic parameters
Value must evaluate to an
unsigned binary,
hexadecimal or decimal
self-defining term
Value must be a
self-defining term
123 123
&PARAM
&SUBLIST(3)
X'A1'
C'Z'
348 HLASM V1R5 Language Reference