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Diffstat (limited to 'static/unix-v10/man1/dc.1')
| -rw-r--r-- | static/unix-v10/man1/dc.1 | 196 |
1 files changed, 196 insertions, 0 deletions
diff --git a/static/unix-v10/man1/dc.1 b/static/unix-v10/man1/dc.1 new file mode 100644 index 00000000..06e48454 --- /dev/null +++ b/static/unix-v10/man1/dc.1 @@ -0,0 +1,196 @@ +.pa 1 +.he 'DC (I)'1/15/73'DC (I)' +.ti 0 +NAME dc -- desk calculator +.sp +.ti 0 +SYNOPSIS dc__ [file] +.sp +.ti 0 +DESCRIPTION dc__ +is an arbitrary precision integer arithmetic package. +The overall structure of dc is +a stacking (reverse Polish) calculator. +The following constructions are recognized +by the calculator: +.sp +.in +3 +.ti -3 +number +.br +The value of the number is pushed on the stack. +A number is an unbroken string of the digits 0-9. +It may be preceded by an underscore (_) to input a +negative number. +.sp +.ti -3 ++_ -_ *_ /_ %_ ^_ +.br +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. +.sp +.ti -3 +s_x +.br +The top of the stack is popped and stored into +a register named x, where x may be any character. +.sp +.ti -3 +l_x +.br +The value in register x is pushed on the stack. +The register x is not altered. +All registers start with zero value. +.sp +.ti -3 +d_ +.br +The top value on the stack is pushed on the stack. +Thus the top value is duplicated. +.sp +.ti -3 +p_ +.br +The top value on the stack is printed. +The top value remains unchanged. +.sp +.ti -3 +f_ +.br +All values on the stack and in registers are printed. +.sp +.ti -3 +.ul 1 +q +.br +exits the program. If executing a string, the nesting level is +popped by two. +.sp +.ti -3 +.ul +x +.br +treats the top element of the stack as a character string +and executes it as a string of dc commands. +.sp +.ti -3 +[...]_____ +.br +puts the bracketed ascii string onto the top of the stack. +.sp +.ti -3 +<_x =_x >_x +.br +The top two elements of the stack are popped and compared. +Register x is executed if they obey the stated +relation. +.sp +.ti -3 +.ul +v +.br +replaces the top element on the stack by its square root. +.sp +.ti -3 +!_ +.br +interprets the rest of the line as a UNIX command. +.sp +.ti -3 +c_ +.br +All values on the stack are popped. +.sp +.ti -3 +i_ +.br +The top value on the stack is popped and used as the +number radix for further input. +.sp +.ti -3 +o_ +.br +the top value on the stack is popped and used as the +number radix for further output. +.sp +.ti -3 +z_ +.br +the stack level is pushed onto the stack. +.sp +.ti -3 +?_ +.br +a line of input is taken from the input source (usually the console) +and executed. +.sp +.ti -3 +new-line +.br +ignored except as the name of a register or to end the +response to a ?_. +.sp +.ti -3 +space +.br +ignored except as the name of a register or to terminate a number. +.br +.sp +.in -3 +If a file name is given, input is taken from that file until +end-of-file, then input is taken from the console. +.sp +An example to +calculate the monthly, weekly and +hourly rates for a $10,000/year salary. +.sp +.nf +.in +3 +10000 +100* (now in cents) +dsa (non-destructive store) +12/ (pennies per month) +la52/ (pennies per week) +d10* (deci-pennies per week) +375/ (pennies per hour) +f (print all results) + 512 + 19230 + 83333 +"a" 1000000 +.sp +.in -3 +An example which prints the first ten values of n! is +.in +3 +[la1+dsa*pla10>x]sx +0sa1 +lxx +.sp +.fi +.in -3 +.ti 0 +FILES -- +.sp +.ti 0 +SEE ALSO msh(VII), salloc(III) +.sp +.ti 0 +DIAGNOSTICS (x) ? for unrecognized character x. +.br +(x) ? for not enough elements on the stack to do what was asked +by command x. +.br +"Out of space" when the free list is exhausted (too many digits). +.br +"Out of headers" for too many numbers being kept around. +.br +"Out of pushdown" for too many items on the stack. +.br +"Nesting Depth" for too many levels of nested execution. +.sp +.ti 0 +.ti 0 +BUGS -- |