Compute Date Duration (CDD)

Instruction Syntax

Op Code (Hex) Operand 1 Operand 2 Operand 3 Operand 4
0424 Date duration Date 1 Date 2 Instruction template
Operand 1: Packed decimal variable scalar.

Operand 2: Character scalar.

Operand 3: Character scalar.

Operand 4: Space pointer.

Bound Program Access 
Built-in number for CDD is 101.
CDD (
     date_duration          : address of packed decimal
     date1                  : address
     date2                  : address
     instruction_template   : address
)

Description:

The date specified by operand 3 is subtracted from the date specified by operand 2 and the resulting date duration is placed in operand 1. Operand 4 defines the data definitional attributes for operands 1 through 3.

A negative value will be returned when the date 1 operand is less than the date 2 operand.

The following describes the instruction template.

Offset  
Dec Hex Field Name Data Type and Length
0 0 Instruction template Char(*)
0 0
  • Instruction template size
  • UBin(4)
4 4
  • Operand 1 data definitional attribute template number
  • UBin(2)
6 6
  • Operand 2 data definitional attribute template number
  • UBin(2)
8 8
  • Operand 3 data definitional attribute template number
  • UBin(2)
10 A
  • Reserved (binary 0)
  • Char(2)
12 C
  • Operand 2 length
  • UBin(2)
14 E
  • Operand 3 length
  • UBin(2)
16 10
  • Reserved (binary 0)
  • Char(26)
42 2A
  • Data definitional attribute template list
  • Char(*)
42 2A
    • Size of the DDAT list
    • UBin(4)
46 2E
    • Number of DDATs
    • UBin(2)
48 30
    • Reserved (binary 0)
    • Char(10)
58 3A
    • DDAT offset
    • [*] UBin(4)
* *
    • Data definitional attribute template
    • [*] Char(*)
*
*
--- End ---
 

A data definitional attribute template (DDAT) number is a number that corresponds to the relative position of a template in the data definitional attribute template list. For example, the number 1 references the first template. The valid values for this field are 1, 2, and 3.

The DDAT for operand 1 must be valid for a date duration. The DDATs for operands 2 and 3 must be valid for a date and must be identical. Otherwise, a template value invalid (hex 3801) exception will be signaled.

Operand 2 length and operand 3 length are specified in number of bytes.

The size of the DDAT list is specified in bytes.

The number of DDATs is the count of DDATs specified for this instruction template. The maximum number of DDATs that can be specified is 3.

The DDAT offset is the number of bytes from the start of the DDAT list to the start of the specific DDAT. There should be as many DDAT offsets as there are DDATs specified.

A data definitional attribute template defines the presentation of the data. Each template describes the definitional attributes of the operands. The length of the character operands will be defined by the template. For a further description of the data definitional attribute template, see Data Definitional Attribute Template.

Authorization Required

  • None

Lock Enforcement

  • None

Exceptions

  • 06 Addressing
    • 0601 Space Addressing Violation
    • 0602 Boundary Alignment
    • 0603 Range
  • 08 Argument/Parameter
    • 0801 Parameter Reference Violation
  • 0C Computation
    • 0C15 Date Boundary Overflow
    • 0C16 Data Format Error
    • 0C17 Data Value Error
    • 0C18 Date Boundary Underflow
  • 10 Damage Encountered
    • 1004 System Object Damage State
    • 1044 Partial System Object Damage
  • 20 Machine Support
    • 2002 Machine Check
    • 2003 Function Check
  • 22 Object Access
    • 2201 Object Not Found
    • 2202 Object Destroyed
    • 2203 Object Suspended
  • 24 Pointer Specification
    • 2401 Pointer Does Not Exist
    • 2402 Pointer Type Invalid
  • 2E Resource Control Limit
    • 2E01 User Profile Storage Limit Exceeded
  • 32 Scalar Specification
    • 3202 Scalar Attributes Invalid
    • 3203 Scalar Value Invalid
  • 36 Space Management
    • 3601 Space Extension/Truncation
  • 38 Template Specification
    • 3801 Template Value Invalid
  • 44 Protection Violation
    • 4401 Object Domain or Hardware Storage Protection Violation
    • 4402 Literal Values Cannot Be Changed