BUG: adding numpy errstate to dataframe/series broadcasting (GH16378)
closes #16378 
closes #16306 

Looks like this may also close #16306 - could you add some confirming tests? # [Codecov](https://codecov.io/gh/pandas-dev/pandas/pull/16433?src=pr&el=h1) Report
> Merging [#16433](https://codecov.io/gh/pandas-dev/pandas/pull/16433?src=pr&el=desc) into [master](https://codecov.io/gh/pandas-dev/pandas/commit/49ec31bbaeca81a6f58fc1be26fe80f3ac188cdd?src=pr&el=desc) will **decrease** coverage by `<.01%`.
> The diff coverage is `100%`.

[![Impacted file tree graph](https://codecov.io/gh/pandas-dev/pandas/pull/16433/graphs/tree.svg?token=eZ4WkYLtcO&height=150&src=pr&width=650)](https://codecov.io/gh/pandas-dev/pandas/pull/16433?src=pr&el=tree)

```diff
@@            Coverage Diff             @@
##           master   #16433      +/-   ##
==========================================
- Coverage   90.42%   90.42%   -0.01%     
==========================================
  Files         161      161              
  Lines       51023    51024       +1     
==========================================
  Hits        46138    46138              
- Misses       4885     4886       +1
```

| Flag | Coverage Δ | |
|---|---|---|
| #multiple | `88.26% <100%> (-0.01%)` | :arrow_down: |
| #single | `40.17% <0%> (-0.01%)` | :arrow_down: |

| [Impacted Files](https://codecov.io/gh/pandas-dev/pandas/pull/16433?src=pr&el=tree) | Coverage Δ | |
|---|---|---|
| [pandas/core/ops.py](https://codecov.io/gh/pandas-dev/pandas/pull/16433?src=pr&el=tree#diff-cGFuZGFzL2NvcmUvb3BzLnB5) | `91.69% <100%> (+0.01%)` | :arrow_up: |
| [pandas/core/common.py](https://codecov.io/gh/pandas-dev/pandas/pull/16433?src=pr&el=tree#diff-cGFuZGFzL2NvcmUvY29tbW9uLnB5) | `91.05% <0%> (-0.34%)` | :arrow_down: |

------

[Continue to review full report at Codecov](https://codecov.io/gh/pandas-dev/pandas/pull/16433?src=pr&el=continue).
> **Legend** - [Click here to learn more](https://docs.codecov.io/docs/codecov-delta)
> `Δ = absolute <relative> (impact)`, `ø = not affected`, `? = missing data`
> Powered by [Codecov](https://codecov.io/gh/pandas-dev/pandas/pull/16433?src=pr&el=footer). Last update [49ec31b...2a1bee3](https://codecov.io/gh/pandas-dev/pandas/pull/16433?src=pr&el=lastupdated). Read the [comment docs](https://docs.codecov.io/docs/pull-request-comments).
 # [Codecov](https://codecov.io/gh/pandas-dev/pandas/pull/16433?src=pr&el=h1) Report
> Merging [#16433](https://codecov.io/gh/pandas-dev/pandas/pull/16433?src=pr&el=desc) into [master](https://codecov.io/gh/pandas-dev/pandas/commit/04356a83c0dc8a749c84e168535e6673f2548ec6?src=pr&el=desc) will **increase** coverage by `<.01%`.
> The diff coverage is `100%`.

[![Impacted file tree graph](https://codecov.io/gh/pandas-dev/pandas/pull/16433/graphs/tree.svg?width=650&height=150&src=pr&token=eZ4WkYLtcO)](https://codecov.io/gh/pandas-dev/pandas/pull/16433?src=pr&el=tree)

```diff
@@            Coverage Diff             @@
##           master   #16433      +/-   ##
==========================================
+ Coverage   90.42%   90.42%   +<.01%     
==========================================
  Files         161      161              
  Lines       51027    51028       +1     
==========================================
+ Hits        46142    46143       +1     
  Misses       4885     4885
```

| Flag | Coverage Δ | |
|---|---|---|
| #multiple | `88.26% <100%> (ø)` | :arrow_up: |
| #single | `40.17% <0%> (-0.01%)` | :arrow_down: |

| [Impacted Files](https://codecov.io/gh/pandas-dev/pandas/pull/16433?src=pr&el=tree) | Coverage Δ | |
|---|---|---|
| [pandas/core/ops.py](https://codecov.io/gh/pandas-dev/pandas/pull/16433?src=pr&el=tree#diff-cGFuZGFzL2NvcmUvb3BzLnB5) | `91.69% <100%> (+0.01%)` | :arrow_up: |

------

[Continue to review full report at Codecov](https://codecov.io/gh/pandas-dev/pandas/pull/16433?src=pr&el=continue).
> **Legend** - [Click here to learn more](https://docs.codecov.io/docs/codecov-delta)
> `Δ = absolute <relative> (impact)`, `ø = not affected`, `? = missing data`
> Powered by [Codecov](https://codecov.io/gh/pandas-dev/pandas/pull/16433?src=pr&el=footer). Last update [04356a8...c78ee39](https://codecov.io/gh/pandas-dev/pandas/pull/16433?src=pr&el=lastupdated). Read the [comment docs](https://docs.codecov.io/docs/pull-request-comments).
 @AndrewArcher small lint failure here: https://travis-ci.org/pandas-dev/pandas/jobs/235018875#L1380 Mind removing the extra newline at the end of the file? Then we can get it merged.

Actually I'll just push a commit fixing that quick. I'm guessing your editor may be setup to add them automatically, and I don't want you to have to fiddle with settings. Merging (the Appveyor failure was fixed in master this morning).

Thanks @AndrewArcher!