3 basecvt - radix conversion for arbitrary precision integers
7 basecvt <ibase> <obase> [values]
11 The B<basecvt> program is a command-line tool for converting integers
12 of arbitrary precision from one radix to another. The current version
13 supports radix values from 2 (binary) to 64, inclusive. The first two
14 command line arguments specify the input and output radix, in base 10.
15 Any further arguments are taken to be integers notated in the input
16 radix, and these are converted to the output radix. The output is
17 written, one integer per line, to standard output.
19 When reading integers, only digits considered "valid" for the input
20 radix are considered. Processing of an integer terminates when an
21 invalid input digit is encountered. So, for example, if you set the
22 input radix to 10 and enter '10ACF', B<basecvt> would assume that you
23 had entered '10' and ignore the rest of the string.
25 If no values are provided, no output is written, but the program
26 simply terminates with a zero exit status. Error diagnostics are
27 written to standard error in the event of out-of-range radix
28 specifications. Regardless of the actual values of the input and
29 output radix, the radix arguments are taken to be in base 10 (decimal)
34 For radices from 2-10, standard ASCII decimal digits 0-9 are used for
35 both input and output. For radices from 11-36, the ASCII letters A-Z
36 are also included, following the convention used in hexadecimal. In
37 this range, input is accepted in either upper or lower case, although
38 on output only lower-case letters are used.
40 For radices from 37-62, the output includes both upper- and lower-case
41 ASCII letters, and case matters. In this range, case is distinguished
42 both for input and for output values.
44 For radices 63 and 64, the characters '+' (plus) and '/' (forward
45 solidus) are also used. These are derived from the MIME base64
46 encoding scheme. The overall encoding is not the same as base64,
47 because the ASCII digits are used for the bottom of the range, and the
48 letters are shifted upward; however, the output will consist of the
51 This input and output behaviour is inherited from the MPI library used
52 by B<basecvt>, and so is not configurable at runtime.
56 dec2hex(1), hex2dec(1)
60 Michael J. Fromberger <sting@linguist.dartmouth.edu>
61 Thayer School of Engineering, Hanover, New Hampshire, USA
63 $Date: 2000/07/14 00:44:31 $