dlbond

Hello all, I hope you can help me with this:

log($f1)-1 gives the correct answer when using expr but not when using jit.expr

I'm trying to create a more complicated expression using the subtraction of logs, but can't get this simple case to work.

Does anyone know a reason for this? Is there a workaround? an alternate syntax? [attached patch just shows that jit.expr gives the wrong answer.]

log($f1)-1 gives the correct answer when using expr but not when using jit.expr
i.e. log(cell[1]+1)-1

Does anyone know a reason for this? Is there a workaround? an alternate syntax? [attached patch just shows that jit.expr gives the wrong answer.] 

math-question-expr-jit-expr-log-function

Put quotes around any expression with spaces in it.

Put quotes around any expression with spaces in it.
wes


I badly bunged up and over-simplified my question to the list and 

failed to demonstrate my real problem. Could you look at this too?

    expr " pow(2 , (log(cell[1]+1)-trunc(log(cell[1]+1)) "

but trying to nest another pow around the result of above

    expr " pow( (pow(2 , (log(cell[1]+1)-trunc(log(cell[1]+1))) , (cell 

    warning: extra arguments to op pow

I can do it with cascading expr's I know, but perhaps there's a way 

Likely another 'fundamental misunderstanding' on my part, but 

On 10-Jul-08, at 4:37 PM, Wesley Smith wrote:

> Put quotes around any expression with spaces in it.

Yes. Thanks Wes,
I did know that, really ; D
I badly bunged up and over-simplified my question to the list and  
failed to demonstrate my real problem. Could you look at this too?
I'm good up to here:
	expr " pow(2 , (log(cell[1]+1)-trunc(log(cell[1]+1))  "
but trying to nest another pow around the result of above
such as:
	expr " pow( (pow(2 , (log(cell[1]+1)-trunc(log(cell[1]+1))) , (cell 
[0]+1) )  "
produces 2 errors
	warning: extra arguments to op pow
	missing arguments to op pow
I can do it with cascading expr's I know, but perhaps there's a way  
to make this work in one step?
Likely another 'fundamental misunderstanding' on my part, but  
anything further would be appreciated.
Thanks,
dlbond

> Put quotes around any expression with spaces in it.
> wes


math question: expr, jit.expr & log function