HP HP-16C - Section 5: Floating-Point Numbers; Overflow and Underflow

Section 5: Floating-Point Numbers 57
T 0.0000
Zz 0.0000
Y 0.0000
X v 2r
Keys = [f)[FLOAT]4
If y - 2% is greater than 9.999999999 X 10%°, flag 5 (out-of-range) is
set and the overflow display (all 9’s) results. If there is no overflow,
flag 5is cleared.
Example: Convert 25E47,4to a decimal, floating-point format.
Keystrokes Display ([STATUS]: 2-64-0000)
HEX Hex mode.
25E47 25E47 h Mantissa.
0 0 h Exponent of 2.
2 155,207.00 Sets Floating-Point
Decimal mode and a
display of two decimal
places. The number is
equivalent to
(25E47,4) - 20.
Other Effects of Converting to Floating Point Mode
Switching from Integer mode (Hexadecimal, Decimal, Octal, or
Binary mode) into Floating-Point Decimal mode also sets the
following conditions:
e The word size is set to 56.
¢ The stack (except the X-register) and the LAST X register are
cleared. Stack lift is enabled.
e The storage registers are not cleared. However, an attempt to
recall register contents (including the Index register) that were
not stored in Floating Point mode usually will result in an
Error 6.*
* Refer to page 68 for details.