- number
The value of the number is pushed on the stack.
A number is an unbroken string of the digits
0-9
or
A-F.
It can be preceded by an underscore
(_)
to input a negative number.
Numbers can contain decimal points.
- + - / * % ^
The top two values on the stack are added
(+),
subtracted
(-),
multiplied
(*),
divided
(/),
remaindered
(%),
or exponentiated
(^).
The two entries are popped off the stack;
the result is pushed on the stack in their place.
Any fractional part of an exponent
is ignored and a warning generated.
The remainder is calculated
according to the current scale factor;
it is not the integer modulus function.
7 % 3
yields .1 (one tenth) if scale is 1 because
7 / 3
is 2.3 with .1 as the remainder.
- sx
The top of the stack is popped and stored into a register named
x,
where
x
can be any character.
If the
s
is capitalized,
x
is treated as a stack and the value is pushed on it.
- lx
The value in register
x
is pushed on the stack.
Register
x
is not altered.
All registers start with zero value.
If the
l
is capitalized, register
x
is treated as a stack and its top value is popped onto the main stack.
- d
The top value on the stack is duplicated.
- p
The top value on the stack is printed.
The top value remains unchanged.
P
interprets the top of the stack as an
ASCII
string, removes it, and prints it.
- f
All values on the stack are printed.
- q
exits the program.
If executing a string, the recursion level is popped by two.
If
q
is capitalized, the top value on the stack is popped
and the string execution level is popped by that value.
- x
treats the top element of the stack as a character string
and executes it as a string of
dc
commands.
- X
replaces the number on the top of the stack with its scale factor.
- [...]
puts the bracketed
ASCII
string onto the top of the stack.
Strings can be nested by using nested pairs of brackets.
- <x >x =x
- !<x !>x !=x
The top two elements of the stack are popped and compared.
Register
x
is evaluated if they obey the stated relation.
- v
Replaces the top element on the stack by its square root.
Any existing fractional part of the argument is taken
into account, but otherwise the scale factor is ignored.
- !
Interprets the rest of the line as an
HP-UX
system command (unless the next character is
<,
>,
or
=,
in which case appropriate relational operator above is used).
- c
All values on the stack are popped.
- i
The top value on the stack is popped and used as the
number radix for further input.
- I
pushes the input base on the top of the stack.
- o
The top value on the stack is popped and used
as the number radix for further output.
See below for notes on output base.
- O
pushes the output base on the top of the stack.
- k
the top of the stack is popped, and that value is used as
a non-negative scale factor:
the appropriate number of places are printed on output,
and maintained during multiplication, division, and exponentiation.
The interaction of scale factor, input base,
and output base will be reasonable if all are changed together.
- K
pushes the scale factor on the top of the stack.
- z
The stack level is pushed onto the stack.
- Z
replaces the number on the top of the stack with its length.
- ?
A line of input is taken from the input source
(usually the terminal) and executed.
- ; and :
Used by
bc
for array operations.
- Y
Generates debugging output for
dc
itself.
Printable version
