[Teem-users] unu 3op exists issue

[Amit C. <am...@sd...>]

Hello,

I am using unu 3op exists to modify a specific floating point value in binary  
data.
The 3op operator is not producing sane results


Check the minmax for original data
unu make -i data.bin -t float -s 4800 100 20 -sp 1 1 1 -l x y z | unu  
minmax -
min: -78.706833
max: 100000004091847875962975319375216640.000000

______________________________________________
Now I would like to swap the  
100000004091847875962975319375216640.000000 (max) to say 99
unu make -i data.bin -t float -s 4800 100 20 -sp 1 1 1 -l x y z | unu  
3op  exists  100000004091847875962975319375216640.000000  99  -  -t  
float | unu data - >data.test

When I check minmax of this new raw data dump, 3op is replacing  
everything not just the one that it was supposed to
unu make -i data.test -t float -s 4800 100 20 -sp 1 1 1 -l x y z | unu  
minmax -
min: 99
max: 99
______________________________________________
Lets try to replace a different number 1.0000000e+35 to 99
unu make -i data.bin -t float -s 4800 100 20 -sp 1 1 1 -l x y z | unu  
3op  exists  1.0000000e+35  99  -  -t float | unu data - >data.test

Same issue everything gets changed
unu make -i data.test -t float -s 4800 100 20 -sp 1 1 1 -l x y z | unu  
minmax -
min: 99
max: 99

______________________________________________
Lets try to replace a value say 0.0 to 99
unu make -i data.bin -t float -s 4800 100 20 -sp 1 1 1 -l x y z | unu  
3op  exists  0.0  99  -  -t float | unu data - >data.test

Still no luck
unu make -i data.test -t float -s 4800 100 20 -sp 1 1 1 -l x y z | unu  
minmax -
min: 99
max: 99

______________________________________________
Does "unu 3op exists" honor exact floating point existence check?
I appreciate tips or work around method to accomplish this.

Thanks
--Amit