Informats under z/OS 
Numeric  
Width range:  116 bytes 
Default width:  1 
Decimal range:  031 
z/OS specifics:  IBM packed decimal format 
See:  PDw.d Informat in SAS Language Reference: Dictionary 
Details  
See Also 
Details 
The w value specifies the number of bytes, not the number of digits. If the informat specification includes a d value, the number is divided by 10^{d}.
In packed decimal format, each byte except for the last byte represents two decimal digits. (The last byte represents one digit and the sign.) An IBM packed decimal number consists of a sign and up to 31 digits, thus giving a range from 10^{31} + 1 to 10^{31}  1. The sign is written in the rightmost nibble. (A nibble is 4 bits or half a byte.) A hexadecimal C indicates a plus sign, and a hexadecimal D indicates a minus sign. The rest of the nibbles to the left of the sign nibble represent decimal digits. The hexadecimal values of these digit nibbles correspond to decimal values; therefore, only values between '0'x and '9'x can be used in the digit positions.
Here are several examples of how data is read using the PDw.d informat:
Data Line (Hexadecimal)  Informat  Value  Notes  

01234D  pd3.  1234 


0123400C  pd4.2  1234  the d value of 2 causes the number to be divided by 10^{2} 
Note: In these examples, Data Line (Hexadecimal) represents the bit pattern stored, which is the value you see if you view it in a text editor that displays values in hexadecimal representation. Value is the number that is used by SAS after the data pattern has been read using the corresponding informat.
The PDw.d format writes missing numerical data as 0. When the PDw.d informat reads 0, it stores it 0.See Also 
Informat: S370FPDw.d in SAS Language Reference: Dictionary
Format: PDw.d Format: z/OS
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