calc: Keypad Main Menu
16.1 Main Menu
==============
|----+----+--Calc---+----+----1
|FLR |CEIL|RND |TRNC|CLN2|FLT |
|----+----+----+----+----+----|
| LN |EXP | |ABS |IDIV|MOD |
|----+----+----+----+----+----|
|SIN |COS |TAN |SQRT|y^x |1/x |
|----+----+----+----+----+----|
| ENTER |+/- |EEX |UNDO| <- |
|-----+---+-+--+--+-+---++----|
| INV | 7 | 8 | 9 | / |
|-----+-----+-----+-----+-----|
| HYP | 4 | 5 | 6 | * |
|-----+-----+-----+-----+-----|
|EXEC | 1 | 2 | 3 | - |
|-----+-----+-----+-----+-----|
| OFF | 0 | . | PI | + |
|-----+-----+-----+-----+-----+
This is the menu that appears the first time you start Keypad mode. It
will show up in a vertical window on the right side of your screen.
Above this menu is the traditional Calc stack display. On a 24-line
screen you will be able to see the top three stack entries.
The ten digit keys, decimal point, and <EEX> key are used for
entering numbers in the obvious way. <EEX> begins entry of an exponent
in scientific notation. Just as with regular Calc, the number is pushed
onto the stack as soon as you press <ENTER> or any other function key.
The <+/-> key corresponds to normal Calc’s ‘n’ key. During numeric
entry it changes the sign of the number or of the exponent. At other
times it changes the sign of the number on the top of the stack.
The <INV> and <HYP> keys modify other keys. As well as having the
effects described elsewhere in this manual, Keypad mode defines several
other “inverse” operations. These are described below and in the
following sections.
The <ENTER> key finishes the current numeric entry, or otherwise
duplicates the top entry on the stack.
The <UNDO> key undoes the most recent Calc operation. ‘INV UNDO’ is
the “redo” command, and ‘HYP UNDO’ is “last arguments” (‘M-<RET>’).
The <<-> key acts as a “backspace” during numeric entry. At other
times it removes the top stack entry. ‘INV <-’ clears the entire stack.
‘HYP <-’ takes an integer from the stack, then removes that many
additional stack elements.
The <EXEC> key prompts you to enter any keystroke sequence that would
normally work in Calc mode. This can include a numeric prefix if you
wish. It is also possible simply to switch into the Calc window and
type commands in it; there is nothing “magic” about this window when
Keypad mode is active.
The other keys in this display perform their obvious calculator
functions. <CLN2> rounds the top-of-stack by temporarily reducing the
precision by 2 digits. <FLT> converts an integer or fraction on the top
of the stack to floating-point.
The <INV> and <HYP> keys combined with several of these keys give you
access to some common functions even if the appropriate menu is not
displayed. Obviously you don’t need to learn these keys unless you find
yourself wasting time switching among the menus.
‘INV +/-’
is the same as <1/x>.
‘INV +’
is the same as <SQRT>.
‘INV -’
is the same as <CONJ>.
‘INV *’
is the same as <y^x>.
‘INV /’
is the same as <INV y^x> (the ‘x’th root of ‘y’).
‘HYP/INV 1’
are the same as <SIN> / ‘INV SIN’.
‘HYP/INV 2’
are the same as <COS> / ‘INV COS’.
‘HYP/INV 3’
are the same as <TAN> / ‘INV TAN’.
‘INV/HYP 4’
are the same as <LN> / ‘HYP LN’.
‘INV/HYP 5’
are the same as <EXP> / ‘HYP EXP’.
‘INV 6’
is the same as <ABS>.
‘INV 7’
is the same as <RND> (‘calc-round’).
‘INV 8’
is the same as <CLN2>.
‘INV 9’
is the same as <FLT> (‘calc-float’).
‘INV 0’
is the same as <IMAG>.
‘INV .’
is the same as <PREC>.
‘INV ENTER’
is the same as <SWAP>.
‘HYP ENTER’
is the same as <RLL3>.
‘INV HYP ENTER’
is the same as <OVER>.
‘HYP +/-’
packs the top two stack entries as an error form.
‘HYP EEX’
packs the top two stack entries as a modulo form.
‘INV EEX’
creates an interval form; this removes an integer which is one of 0
‘[]’, 1 ‘[)’, 2 ‘(]’ or 3 ‘()’, followed by the two limits of the
interval.
The ‘OFF’ key turns Calc off; typing ‘C-x * k’ or ‘C-x * *’ again has
the same effect. This is analogous to typing ‘q’ or hitting ‘C-x * c’
again in the normal calculator. If Calc is running standalone (the
‘full-calc-keypad’ command appeared in the command line that started
Emacs), then ‘OFF’ is replaced with ‘EXIT’; clicking on this actually
exits Emacs itself.
Info Catalog
calc: Keypad Mode
calc: Keypad Mode
calc: Keypad Functions Menu