Generates an IEEE floating-point value by multiplying a number
by 10 raised to the dth power.
| Category: |
Numeric
|
| Alignment: |
left
|
| Caution: |
Large floating-point values and floating-point
values that require precision might not be identical to the original SAS value
when they are written to an IBM mainframe by using the IEEE format and read
back into SAS using the IEE informat.
|
-
w
-
specifies the width of the output field.
| Default: |
8 |
| Range: |
3-8 |
| Tip: |
If w
is 8, an IEEE double-precision, floating-point number is written. If w is 5, 6, or 7, an IEEE double-precision, floating-point number
is written, which assumes truncation of the appropriate number of bytes. If w is 4, an IEEE single-precision floating-point number is
written. If w is 3, an IEEE single-precision,
floating-point number is written, which assumes truncation of one byte. |
-
d
-
specifies to multiply the number by 10d. This argument is optional.
This format is useful in operating environments
where IEEEw.d is
the floating-point representation that is used. In addition, you can use the
IEEEw.d format to
create files that are used by programs in operating environments that use
the IEEE floating-point representation.
Typically, programs generate IEEE values in single-precision
(4 bytes) or double-precision (8 bytes). Programs perform truncation solely
to save space on output files. Machine instructions require that the floating-point
number be one of the two lengths. The IEEEw.d format allows other lengths, which enables you to write data
to files that contain space-saving truncated data.
test1=put(x,ieee4.);
put test1 $hex8.;
test2=put(x,ieee5.);
put test2 $hex10.;
|
Value of x |
Results |
1
|
3F800000
|
|
3FF0000000
|
| *
The result contains hexadecimal representations of
binary numbers stored in IEEE form. |
Copyright © 2011 by SAS Institute Inc., Cary, NC, USA. All rights reserved.
