HLASM Language Reference

DC Instruction
Figure 36. Type Extension Codes for Constants
Type
Type
Extension
Description
| C A
ASCII character constant
| E
EBCDIC character constant
| U
Unicode UTF-16 character constant
E H New hexadecimal floating-point constant
B
Binary floating-point constant
D H New hexadecimal floating-point constant
B
Binary floating-point constant
L H New hexadecimal floating-point constant
B
Binary floating-point constant
| Q
Hexadecimal floating-point, quadword alignment
F D Doubleword fixed-point constant
A D Doubleword address constant
| V D
Doubleword address constant
| J
D
Doubleword address constant
| Q D
Doubleword address constant
| R D
Doubleword address constant
The type extension specification, in conjunction with the type subfield, indicates to
the assembler:
1. How to assemble the nominal value(s) specified in subfield 6; that is, which
binary representation or machine format the object code of the constant must
have.
2. At what boundary the assembler aligns the constant, if no length modifier is
present.
3. How much storage the constant occupies, according to the implicit length of the
constant, if no explicit length modifier is present (for details, see “Padding and
Truncation of Values” on page 130).
Subfield 4: Program type
| The syntax for coding the program type is shown in the subfield format on page
| 127.
| You may omit the program type subfield. If specified, the assembler assigns the
| value to the symbol naming the DC instruction, if a symbol was present. It can be
| specified as a decimal, character, hex or binary self-defining term and is stored as
| a 32-bit value. The value is not used in any way by the assembler, and may be
| queried by using the SYSATTRP built-in function.
| The program type is specified within a P prefixed set of parenthesis - P(). For
| example:
| Prog1 DC CP(7)'Perth' Program type is 7
| Prog2 DC 3XP(C'APC')'FF' Program type is C'APC'
Chapter 5. Assembler Instruction Statements 135