d4 | A friendly reusable charts DSL for D3 | Chart library

I've written a small function with C-code and a short inline assembly statement.
Inside the inline assembly statement I need 2 "temporary" registers to load and compare some memory values.
To allow the compiler to choose "optimal temporary registers" I would like to avoid hard-coding those temp registers (and putting them into the clobber list). Instead I decided to create 2 local variables in the surrounding C-function just for this purpose. I used "=r" to add these local variables to the output operands specification of the inline asm statement and then used them for my load/compare purposes.
These local variables are not used elsewhere in the C-function and (maybe because of this fact) the compiler decided to assign the same register to the two related output operands which makes my code unusable (comparison is always true).

Is the compiler allowed to use overlapping registers for different output operands or is this a compiler bug (I tend to rate this as a bug)?
I only found information regarding early clobbers which prevent overlapping of register for inputs and outputs... but no statement for just output operands.

A workaround is to initialize my temporary variables and to use "+r" instead of "=r" for them in the output operand specification. But in this case the compiler emits initialization instructions which I would like to avoid.
Is there any clean way to let the compiler choose optimal registers that do not overlap each other just for "internal inline assembly usage"?

Thank you very much!

P.S.: I code for some "exotic" target using a "non-GNU" compiler that supports "GNU inline assembly".
P.P.S.: I also don't understand in the example below why the compiler doesn't generate code for "int eq=0;" (e.g. 'mov d2, 0'). Maybe I totally misunderstood the "=" constraint modifier?

Totally useless and stupid example below just to illustrate (focus on) the problem:

I would like to calcul the distribution of a card hand in prolog. It means get this result:

I'm trying to concatenate two dataframes with these conditions :

1. for an existing header, append to the column ;
2. otherwise add a new column.

The code is working but the columns names are lost in case 2. Why? It doesn't seem to be mentioned in Pandas doc. Or I missed something?

How to keep the column names?

The code :

This question is a little confusing, but I'll try my best to explain it. I have a dataset with 7 numeric columns (DIF1, DIF2, DIF3, DIF4, DIF5, DIF6, DIF7) and I want to compare them to see which one has the lowest number in each row.

After I do that, I need to create a column to fill with other 7 character columns (D1, D2, D3, D4, D5, D6, D7). I thought about doing it using ifelse statement as below:

I have the following dataframe df

In a 'hospital' collection, there are docs for every department in the hospital. Each document has details like department_name, doctors and nurses assigned for this department. The document structure looks like below:

In the data frame df1, how to convert q1,....q9,q0,...d5 days into day of years?

I have implemented a Convolutional Neural Network in C and have been studying what parts of it have the longest latency.

Based on my research, the massive amounts of matricial multiplication required by CNNs makes running them on CPUs and even GPUs very inefficient. However, when I actually profiled my code (on an unoptimized build) I found out that something other than the multiplication itself was the bottleneck of the implementation.

After turning on optimization (-O3 -march=native -ffast-math, gcc cross compiler), the Gprof result was the following:

Clearly, the convolution2D function takes the largest amount of time to run, followed by the batch normalization and depthwise convolution functions.

The convolution function in question looks like this:

 Hello!
 So I have different (non-numeric) values in Column B (B3:B). And I have transactions (formatted as currency) in Columns C through E (range C3:E). So I want every cell in any given row within that range to be colored, whenever that cell has some value (non-empty) AND the corresponding cell (of the same row) in Column B has "$" value in it.
 In other words I need a formula that would check the whole (C3:E) range, find all non-empty cells (assuming that there will be blank cells in that range), check the corresponding (of the same row number) cells in Column B and, if those corresponding cells contain "$" value, color all the non-empty cells in that row (even if there are several non-empty cells in there) within the (C3:E) range.
Let's say we see that in row 7 there are two cells (and they are within our C3:E range) that have values 23.54 and 67.90 (non-empty). That's the first condition. And we also see that the value of the corresponding cell in row 7 of Column B (B7) is "$". That's the second condition. So only cells C7 and E7 (not the whole C7-E7 row) must be colored by conditional formatting. So in the table I provided only cells D4, C7 and E7 must be colored.

 That's the custom formula for Conditional Formatting that I came up with =AND(NOT(ISBLANK(C3:E)),AND($B3="$")) but the problem is that it colors the whole row instead of the non-empty cells in that row only.
 Where am I making a mistake?

Please advise.

     Column B Column C Column D Column E    
3      None               14.50                                    12.00
4         $                                         45.90
5      Some               23.90
6       Few
7        $                    23.54                                   67.90


P.S: What would the formula be to color the cells that contain anything else but "$" with another color?