Source file bitint.icn
############################################################################
#
#	File:     bitint.icn
#
#	Subject:  Procedures to convert integers and bit strings
#
#	Author:   Ralph E. Griswold
#
#	Date:     May 25, 1994
#
############################################################################
#
#   This file is in the public domain.
#
############################################################################
#
#   int2bit(i) produces a string with the bit representation of i.
#
#   bit2int(s) produces an integer corresponding to the bit representation i.
#
############################################################################

procedure int2bit(i)
   local s, sign

   if i = 0 then return 0
   if i < 0 then {
      sign := "-"
      i := -i
      }
   else sign := ""
   s := ""
   while i > 0 do {
      s := (i % 2) || s
      i /:= 2
      }
   return sign || s
end

procedure bit2int(s)
   if s[1] == "-" then return "-" || integer("2r" || s[2:0])
   else return integer("2r" || s)
end

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