Under
z/OS, each hexadecimal
character that is read by the HEX informat must be represented using
the EBCDIC code, with one digit per byte. For example, the hexadecimal
number '3B'x is actually stored in the external file as the bit pattern
represented by 'F3C2'x, which is the EBCDIC code for 3B. For a table
of commonly used EBCDIC characters, see
EBCDIC Code: Commonly Used Characters.The format of floating-point
numbers is host specific. See the data representation information
in
SAS Language Reference: Concepts for a description of the IBM floating-point format
that is used under
z/OS.
The
w value
of the HEX informat specifies the field width of the input value.
It also specifies whether the final value is an integer binary (fixed-point)
value or a real binary (floating-point) value. When you specify a
width value of 1 through 15, the input hexadecimal number represents
an integer binary number. When you specify a width of 16, SAS interprets
the input hexadecimal number as a representation of a floating-point
number.
The following examples
illustrate the use of the HEX
w.d
format:
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input is interpreted
as floating point
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input is interpreted
as integer
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input is interpreted
as floating point
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Note: In these examples, Data Line
represents the bit pattern stored, which is the value seen when viewed
in a text editor. Value is the number that is used by SAS after the
data pattern has been read using the corresponding informat.