I am looking for BOOLEAN Algebra Functions. Can't find any help in EXCEL.
While I can work around the OR, AND, and NOT, I need XOR.

Hi,

Excel doesn't have it but you can write your own quite simply

=IF(COUNTIF(A1:B1,"Some Value")=1,TRUE,FALSE)

Mike


"RL Jones" wrote:

I am looking for BOOLEAN Algebra Functions. Can't find any help in EXCEL.
While I can work around the OR, AND, and NOT, I need XOR.

I'm pretty sure this is it...

=OR(AND(A1,NOT(B1)),AND(NOT(A1),B1))

--
Rick (MVP - Excel)


"RL Jones" <RL wrote in message
...
I am looking for BOOLEAN Algebra Functions. Can't find any help in EXCEL.
While I can work around the OR, AND, and NOT, I need XOR.

Rick,

Can be abbreviated to:-

=(A1<0)+(B1<0)=1

and it also works if both cells are blank.

Mike

"Rick Rothstein" wrote:

I'm pretty sure this is it...

=OR(AND(A1,NOT(B1)),AND(NOT(A1),B1))

--
Rick (MVP - Excel)


"RL Jones" <RL wrote in message
...
I am looking for BOOLEAN Algebra Functions. Can't find any help in EXCEL.
While I can work around the OR, AND, and NOT, I need XOR.

Ah, yes... very good. And I guess that could be written this way as well...

=NOT(A1)+NOT(B1)=1

--
Rick (MVP - Excel)


"Mike H" wrote in message
...
Rick,

Can be abbreviated to:-

=(A1<0)+(B1<0)=1

and it also works if both cells are blank.

Mike

"Rick Rothstein" wrote:

I'm pretty sure this is it...

=OR(AND(A1,NOT(B1)),AND(NOT(A1),B1))

--
Rick (MVP - Excel)


"RL Jones" <RL wrote in message
...
I am looking for BOOLEAN Algebra Functions. Can't find any help in
EXCEL.
While I can work around the OR, AND, and NOT, I need XOR.

Yes it could and until Excel include

=XOR(A1,B1) then they are as short as it gets.

Mike

"Rick Rothstein" wrote:

Ah, yes... very good. And I guess that could be written this way as well...

=NOT(A1)+NOT(B1)=1

--
Rick (MVP - Excel)


"Mike H" wrote in message
...
Rick,

Can be abbreviated to:-

=(A1<0)+(B1<0)=1

and it also works if both cells are blank.

Mike

"Rick Rothstein" wrote:

I'm pretty sure this is it...

=OR(AND(A1,NOT(B1)),AND(NOT(A1),B1))

--
Rick (MVP - Excel)


"RL Jones" <RL wrote in message
...
I am looking for BOOLEAN Algebra Functions. Can't find any help in
EXCEL.
While I can work around the OR, AND, and NOT, I need XOR.

"Rick Rothstein" wrote...
Ah, yes... very good. And I guess that could be written this way as well...

=NOT(A1)+NOT(B1)=1
....

If A1 and B1 would always be 1s or 0s, even shorter:

=MOD(A1+B1,2)

Ah, yes... very good. And I guess that could be written this way as
well...

=NOT(A1)+NOT(B1)=1
...

If A1 and B1 would always be 1s or 0s, even shorter:

=MOD(A1+B1,2)

Provided the user didn't need to see the result of the operation as
TRUE/FALSE, of course.

--
Rick (MVP - Excel)

An XOR could operate on any number of binary bits.
An odd parity checker would XOR all given bits,
thus checking for an odd number of bits in a word:
=MOD(1+MOD(HEX2BIN("AE")-1,9),2)
I vote for Harlan's formulas, having lifted them from
his post dated Jun 16, 2003.

... until Excel include =XOR(A1,B1)

It's included as an Excel vba function.
I have no idea why it's not included as a Worksheet function.

b = a Xor b

= = = =
Dana DeLouis


Mike H wrote:
Yes it could and until Excel include

=XOR(A1,B1) then they are as short as it gets.

Mike

"Rick Rothstein" wrote:

Ah, yes... very good. And I guess that could be written this way as well...

=NOT(A1)+NOT(B1)=1

--
Rick (MVP - Excel)


"Mike H" wrote in message
...
Rick,

Can be abbreviated to:-

=(A1<0)+(B1<0)=1

and it also works if both cells are blank.

Mike

"Rick Rothstein" wrote:

I'm pretty sure this is it...

=OR(AND(A1,NOT(B1)),AND(NOT(A1),B1))

--
Rick (MVP - Excel)


"RL Jones" <RL wrote in message
...
I am looking for BOOLEAN Algebra Functions. Can't find any help in
EXCEL.
While I can work around the OR, AND, and NOT, I need XOR.

I wasn't saying to not use Harlan's formula... just noting his is returning
a number whereas the other posted formula returned TRUE/FALSE. If you used
in an expression, that difference wouldn't matter; but since all submissions
were shown as stand-alone formulas, I just figured I would note the
difference in what each returned. Besides, I wanted to give an opening to
Harlan to post back...

=MOD(A1+B1,2)=1

I think he likes being able to do that, so I thought I would be nice to him
and leave the door open for him to do that.<g Of course, now that I took
that opportunity away from him in my response to you, I'll have to give him
a different opening for a response to this thread. Let me see... I know... I
do wonder which is the more efficient construction... Harlan's formula which
uses a MOD function call, mine which uses two NOT function calls or Mike's
which uses two logical comparisons.

--
Rick (MVP - Excel)


"Herbert Seidenberg" wrote in message
...
An XOR could operate on any number of binary bits.
An odd parity checker would XOR all given bits,
thus checking for an odd number of bits in a word:
=MOD(1+MOD(HEX2BIN("AE")-1,9),2)
I vote for Harlan's formulas, having lifted them from
his post dated Jun 16, 2003.

On Tuesday, July 21, 2009 at 11:01:01 AM UTC-7, RL Jones wrote:
I am looking for BOOLEAN Algebra Functions. Can't find any help in EXCEL.
While I can work around the OR, AND, and NOT, I need XOR.

All you have to do is
=not(a1 = a2)

textmonster404 wrote:

On Tuesday, July 21, 2009 at 11:01:01 AM UTC-7,
RL Jones wrote:
I am looking for BOOLEAN Algebra Functions. Can't find any help in EXCEL.
While I can work around the OR, AND, and NOT, I need XOR.

All you have to do is
=not(a1 = a2)

All *you* have to do is check the date of the original post. I'm pretty sure
"Jones" isn't still waiting for answers after almost ***EIGHT YEARS!!!***

--
I don't think you have yet told me how I can satisfy your curiosity.