Delila Program: tobinary

tobinary program

Documentation for the tobinary program is below, with links to related programs in the "see also" section.

{version = 1.01; (* of tobinary.p 1998 January 2}

(* begin module describe.tobinary *)
(*
name
   tobinary: convert numbers to binary

synopsis
   tobinary(input: in, output: out)

files

   input:  a list of integers, one per line.
      If the first number is zero, then that number
      is ignored and the decimal numbers are not reported.

   output: the numbers and the numbers converted to binary

description
   This program makes conversion to binary easy.

   The method the program uses is to find out if the number is divisible by
   2.  This is done with the standard mod function If it is divisible by 2,
   then the last digit is 0, otherwise it is 1.  Then the number is divided
   by 2 and the remainder (1 or 0) is thrown away.  This is done with the
   standard div function.  This process is repeated until the number is
   completely eaten away.  This gives the digits in reversed order, so the
   program stores them in an array, and prints the array backwards to give
   you the final result.

examples

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
32
64
1024
2046
0
0
-1
-2
-3
-4
-5
-6
-7
-8
-9
0
0
1998
1999
2000
2001
2002
0
0
2045
2046
2047
2048
2049

produces:

1 1
2 10
3 11
4 100
5 101
6 110
7 111
8 1000
9 1001
10 1010
11 1011
12 1100
13 1101
14 1110
15 1111
16 10000
17 10001
32 100000
64 1000000
1024 10000000000
2046 11111111110
0  0
0  0
-1 -1
-2 -10
-3 -11
-4 -100
-5 -101
-6 -110
-7 -111
-8 -1000
-9 -1001
0  0
0  0
1998 11111001110
1999 11111001111
2000 11111010000
2001 11111010001
2002 11111010010
0  0
0  0
2045 11111111101
2046 11111111110
2047 11111111111
2048 100000000000
2049 100000000001

documentation

see also
   tobinaryp

author
   Thomas Dana Schneider

bugs

technical notes

*)
(* end module describe.tobinary *)
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