1. binary to decimal conversion
Does anyone have a lib that takes 2 bit
binary numbers and converts to decimal?
I tried it but its ugly and doesn't work.
J Reeves
Grape Vine
ICQ# 13728824
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2. Re: binary to decimal conversion
Hello J Reeves,
>Does anyone have a lib that takes 2 bit
>binary numbers and converts to decimal?
>I tried it but its ugly and doesn't work.
I found the following in:
http://rapideuphoria.com/lib_a_b.htm#bits_to_int
Is this what you need
bits_to_int
Syntax: include machine.e
a = bits_to_int(s)
Description: Convert a sequence of binary 1's and 0's into a positive
number. The least-significant bit is s[1].
Comments: If you print s the bits will appear in "reverse" order, but it is
convenient to have increasing subscripts access bits of increasing
significance.
Example:
a = bits_to_int({1,1,1,0,1})
-- a is 23 (binary 10111)
See Also: int_to_bits, operations on sequences
According the above description, it looks like you will need
to reverse the sequence of bits before sending it to
bits_to_int(). Here is what I think would work:
<Untested code>
include machine.e -- for bits_to_int()
include misc.e -- for reverse()
sequence binary
integer int
binary = {0,1} -- 1
int = bits_to_int( reverse( binary ) )
? int
<end untested code>
later,
Lewis Townsend
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3. Re: binary to decimal conversion
I too have seen that. It does not work just the way i want it to
Id does as long as i supply the binary by hand.
I have a 128byte buffer i need changed from
8 bit binary to 2 bit binary
I tried sequence slicing but it keeps
giving me the old number
>From: Lewis Townsend <keroltarr at HOTMAIL.COM>
>Reply-To: Euphoria Programming for MS-DOS <EUPHORIA at LISTSERV.MUOHIO.EDU>
>To: EUPHORIA at LISTSERV.MUOHIO.EDU
>Subject: Re: binary to decimal conversion
>Date: Thu, 19 Oct 2000 18:17:00 CDT
>
>Hello J Reeves,
>
>>Does anyone have a lib that takes 2 bit
>>binary numbers and converts to decimal?
>>I tried it but its ugly and doesn't work.
>
>
>I found the following in:
>http://rapideuphoria.com/lib_a_b.htm#bits_to_int
>Is this what you need
>
>
>bits_to_int
>Syntax: include machine.e
>a = bits_to_int(s)
>Description: Convert a sequence of binary 1's and 0's into a positive
>number. The least-significant bit is s[1].
>Comments: If you print s the bits will appear in "reverse" order, but it is
>convenient to have increasing subscripts access bits of increasing
>significance.
>Example:
>a = bits_to_int({1,1,1,0,1})
>-- a is 23 (binary 10111)
>
>See Also: int_to_bits, operations on sequences
>
>According the above description, it looks like you will need
>to reverse the sequence of bits before sending it to
>bits_to_int(). Here is what I think would work:
>
><Untested code>
>include machine.e -- for bits_to_int()
>include misc.e -- for reverse()
>sequence binary
>integer int
>binary = {0,1} -- 1
>int = bits_to_int( reverse( binary ) )
>? int
><end untested code>
>
>
>later,
>Lewis Townsend
>_________________________________________________________________________
>Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com.
>
>Share information about yourself, create your own public profile at
>http://profiles.msn.com.
_________________________________________________________________________
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4. Re: binary to decimal conversion
------=_NextPart_000_000F_01C03AA9.246E5B30
charset="iso-8859-1"
Hi,
I've knocked up a function that might be what you're looking for.
>
>I too have seen that. It does not work just the way i want it to
>Id does as long as i supply the binary by hand.
>I have a 128byte buffer i need changed from
>8 bit binary to 2 bit binary
>I tried sequence slicing but it keeps
>giving me the old number
>
>
-----
cheers,
Derek Parnell
------=_NextPart_000_000F_01C03AA9.246E5B30
name="test.exw"
Content-Transfer-Encoding: quoted-printable
5. Re: binary to decimal conversion
> From: Grape_ Vine_
> I too have seen that. It does not work just the way i want it to
> Id does as long as i supply the binary by hand.
> I have a 128byte buffer i need changed from
> 8 bit binary to 2 bit binary
> I tried sequence slicing but it keeps
> giving me the old number
This isn't completely clear, but is this what you mean:
original buffer dec = { 255, 128 }
=>
original buffer bin = { 11111111, 10101010 }
=>
new buffer bin = { 11, 11, 11, 11, 10, 10, 10, 10 }
=>
new buffer dec = { 3, 3, 3, 3, 2, 2, 2, 2 }
if so:
-- begin tested code
include machine.e
-- sequence buf is a sequence of integers [0-255]
function convert_buffer( sequence buf )
sequence new
for i = 1 to length( buf ) do
-- put into binary/sequence form
buf[i] = int_to_bits( buf[i] )
end for
new = {}
for i = 1 to length( buf ) do
-- slice up the bytes into 2 bit lengths and add to new
new &= { buf[i][1..2], buf[i][3..4], buf[i][5..6], buf[i][7..8] }
end for
buf = repeat(0, length(new) )
for i = 1 to length( new ) do
-- convert back to integers from binary/sequence form
buf[i] = bits_to_int( new[i] )
end for
return buf
end function
-- end code
There are probably ways that this could be sped up, but I think this gets
the job done. I'm not certain how you're getting the buffer, but this
should be easily modifiable.
Matt
6. Re: binary to decimal conversion
Thanx, This is what i was after. Sorry for not being clear,
I tend to say 3 words and think it was 30 =)
J Reeves
Grape Vine
ICQ# 13728824
>From: Matthew Lewis <MatthewL at KAPCOUSA.COM>
>Reply-To: Euphoria Programming for MS-DOS <EUPHORIA at LISTSERV.MUOHIO.EDU>
>To: EUPHORIA at LISTSERV.MUOHIO.EDU
>Subject: Re: binary to decimal conversion
>Date: Fri, 20 Oct 2000 08:51:42 -0700
>
> > From: Grape_ Vine_
>
> > I too have seen that. It does not work just the way i want it to
> > Id does as long as i supply the binary by hand.
> > I have a 128byte buffer i need changed from
> > 8 bit binary to 2 bit binary
> > I tried sequence slicing but it keeps
> > giving me the old number
>
>This isn't completely clear, but is this what you mean:
>
>original buffer dec = { 255, 128 }
>=>
>original buffer bin = { 11111111, 10101010 }
>=>
>new buffer bin = { 11, 11, 11, 11, 10, 10, 10, 10 }
>=>
>new buffer dec = { 3, 3, 3, 3, 2, 2, 2, 2 }
>
>
>if so:
>
>-- begin tested code
>
>include machine.e
>
>-- sequence buf is a sequence of integers [0-255]
>function convert_buffer( sequence buf )
> sequence new
>
> for i = 1 to length( buf ) do
> -- put into binary/sequence form
> buf[i] = int_to_bits( buf[i] )
> end for
>
> new = {}
> for i = 1 to length( buf ) do
> -- slice up the bytes into 2 bit lengths and add to new
> new &= { buf[i][1..2], buf[i][3..4], buf[i][5..6], buf[i][7..8] }
> end for
>
> buf = repeat(0, length(new) )
> for i = 1 to length( new ) do
> -- convert back to integers from binary/sequence form
> buf[i] = bits_to_int( new[i] )
> end for
>
> return buf
>end function
>
>-- end code
>
>There are probably ways that this could be sped up, but I think this gets
>the job done. I'm not certain how you're getting the buffer, but this
>should be easily modifiable.
>
>Matt
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