Froots; Fs?C - HP 48gII Advanced User's Reference Manual

Normally, the stack display is updated as soon as the calculator is ready for data input. For
example, when HALT stops a running program, or when a program ends, any displayed
messages are cleared. The FREEZE command "freezes" a part or all of the display so that it is
not updated until a key is pressed. This allows, for example, a prompting message to persist after
a program halts to await data input.
n is the sum of the value codes for the areas to be frozen:
display area
History/Stack/Command-line area
So, for example, 2 FREEZE freezes the history/stack/command-line area, 3 FREEZE freezes
the status area and the history/stack/command-line area, and 7 FREEZE freezes all three areas.
Values of n
graphics display, you must freeze the status and stack/command-line areas (by entering 3), or the
entire display (by entering 7).
!°L
Access:
Input/Output:
See also: CLLCD, DISP, HALT

FROOTS

CAS: For a rational polynomial, return its roots and poles, with their corresponding multiplicities.
FS?
Type: Command
Description: Flag Set? Command: Tests whether the system or user flag specified by n
returns a corresponding test result: 1 (true) if the flag is set or 0 (false) if the flag is clear.
!°
Access:
!° L
!& H
Input/Output:
See also: CF, FC?, FC?C, FS?C, SF

FS?C

Type: Command
Description: Flag Set? Clear Command: Tests whether the system or user flag specified by n
returns a corresponding test result: 1 (true) if the flag is set or 0 (false) if the flag is clear. After
testing, clears the flag.
!°
Access:
!° L
!& H
Input/Output:
Display Area
Status area
Menu area
7 or 0 freeze the entire display (are equivalent to value 7). To freeze the
display area
OUT FREEZE
Level 1/Argument 1
n
displayarea
LL
?
TEST FS
?
MODES FLAG FS
?
FLAG FS
Level 1/Argument 1
n
flag number
LL
?
TEST FS C
?
MODES FLAG FS C
?
FLAG FS C
Level 1/Argument 1
n
flag number
Value Code
1
2
4
( °is the left-shift of the Nkey).
( °is the left-shift of the Nkey).
( °is the left-shift of the Nkey).
( °is the left-shift of the Nkey).
( °is the left-shift of the Nkey).
Full Command and Function Reference 3-69
Level 1/Item 1
is set, and
flag number
Level 1/Item 1
0/1
is set, and
flag number
Level 1/Item 1
0/1