Scale attribute (S')
The scale attribute can be used only when referring to fixed-point, floating-point, or decimal constants. The following table shows the numeric value assigned to the scale attribute:
|
Constant
Types Allowed |
Type of DC or DS
Allowed |
Value of Scale
Attribute Assigned |
|---|---|---|
| Fixed-Point | H and F | Equal to the value of the scale modifier (-187 through +346) |
| Floating Point | D, E, and L | Equal to the value of the scale modifier(0 through 14 — D, E)(0 through 28 — L) |
| Decimal | P and Z | Equal to the number of decimal digits specified to the right of the decimal point(0 through 31 — P)(0 through 16 — Z) |
The scale attribute can also be specified outside conditional assembly
instructions. Then, the scale attribute value is not used for conditional
assembly processing, but is used as a value at assembly time.
Notes:
- The scale attribute reference can be used only in arithmetic expressions.
- When no scale attribute value can be determined, the reference is flagged and the scale attribute is 1.
- If the value of the SETC symbol is equal to the name of an instruction that can validly define the scale attribute, the assembler lets you use the scale attribute with a SETC symbol.
- Binary floating-point constants return an attribute of 0.
- Decimal floating-point constants return an attribute of 0.
- The scale attribute reference can only be used in arithmetic expressions in conditional assembly instructions, and in absolute and relocatable expressions in assembler and machine instructions.