HP 9100B Operating & Programming Manual page 60

so
H
YBOA
UNCTION K YS
Absolute value of y. Sets the contents of the Y register
positive without affecting the sign of the exponent.
EXAMPLE:
SWITCH: FLOATING
PRESS:
PRESS:
DISPLAY:
CLEAR
X
ENTER
EXP
- 5.
PRESS:
IYI
I I
DISPLAY: 5.
CHG
SIGN
CHG
SIGN
- DD
5
t
~Y
-DD
~
Y.
This instruction is used (mostly in programming) to check if a
number falls within a given
< +
or - ) tolerance. The diagnostic
program, contained in the Miscellaneous section of your Pro-
gram Library, contains several examples of this.
Clears the X register and enters pi.
Up to and including ten digits are displayed, but two
more digits (- -60) are included in the guard digits (see
Page 11 ).
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