atan2 derivative

[mattfidler]

@mattfidler Derivative on atan2 is working on my side. Do you have a code snippet?

Originally posted by @Marlin-Na in #96 (comment)

library(symengine)
#> SymEngine Version: 0.4.1
#>  _____           _____         _         
#> |   __|_ _ _____|   __|___ ___|_|___ ___ 
#> |__   | | |     |   __|   | . | |   | -_|
#> |_____|_  |_|_|_|_____|_|_|_  |_|_|_|___|
#>       |___|               |___|
D(S("atan2(y,x)"), "x")
#> (Derivative) Derivative(atan2(y, x), x)
D(S("atan2(y,x)"), "y")
#> (Derivative) Derivative(atan2(y, x), y)

^{Created on 2020-06-19 by the reprex package (v0.3.0)}

Session info

devtools::session_info()
#> - Session info ---------------------------------------------------------------
#>  setting  value                                      
#>  version  R version 4.0.0 Patched (2020-05-06 r78376)
#>  os       Windows 10 x64                             
#>  system   x86_64, mingw32                            
#>  ui       RTerm                                      
#>  language (EN)                                       
#>  collate  English_United States.1252                 
#>  ctype    English_United States.1252                 
#>  tz       America/Chicago                            
#>  date     2020-06-19                                 
#> 
#> - Packages -------------------------------------------------------------------
#>  package     * version date       lib source        
#>  assertthat    0.2.1   2019-03-21 [1] CRAN (R 4.0.0)
#>  backports     1.1.8   2020-06-17 [1] CRAN (R 4.0.0)
#>  callr         3.4.3   2020-03-28 [1] CRAN (R 4.0.0)
#>  cli           2.0.2   2020-02-28 [1] CRAN (R 4.0.0)
#>  crayon        1.3.4   2017-09-16 [1] CRAN (R 4.0.0)
#>  desc          1.2.0   2018-05-01 [1] CRAN (R 4.0.0)
#>  devtools      2.3.0   2020-04-10 [1] CRAN (R 4.0.0)
#>  digest        0.6.25  2020-02-23 [1] CRAN (R 4.0.0)
#>  ellipsis      0.3.1   2020-05-15 [1] CRAN (R 4.0.0)
#>  evaluate      0.14    2019-05-28 [1] CRAN (R 4.0.0)
#>  fansi         0.4.1   2020-01-08 [1] CRAN (R 4.0.0)
#>  fs            1.4.1   2020-04-04 [1] CRAN (R 4.0.0)
#>  glue          1.4.1   2020-05-13 [1] CRAN (R 4.0.0)
#>  highr         0.8     2019-03-20 [1] CRAN (R 4.0.0)
#>  htmltools     0.5.0   2020-06-16 [1] CRAN (R 4.0.0)
#>  knitr         1.28    2020-02-06 [1] CRAN (R 4.0.0)
#>  magrittr      1.5     2014-11-22 [1] CRAN (R 4.0.0)
#>  memoise       1.1.0   2017-04-21 [1] CRAN (R 4.0.0)
#>  pkgbuild      1.0.8   2020-05-07 [1] CRAN (R 4.0.0)
#>  pkgload       1.1.0   2020-05-29 [1] CRAN (R 4.0.0)
#>  prettyunits   1.1.1   2020-01-24 [1] CRAN (R 4.0.0)
#>  processx      3.4.2   2020-02-09 [1] CRAN (R 4.0.0)
#>  ps            1.3.3   2020-05-08 [1] CRAN (R 4.0.0)
#>  R6            2.4.1   2019-11-12 [1] CRAN (R 4.0.0)
#>  Rcpp          1.0.4.6 2020-04-09 [1] CRAN (R 4.0.0)
#>  remotes       2.1.1   2020-02-15 [1] CRAN (R 4.0.0)
#>  rlang         0.4.6   2020-05-02 [1] CRAN (R 4.0.0)
#>  rmarkdown     2.2     2020-05-31 [1] CRAN (R 4.0.0)
#>  rprojroot     1.3-2   2018-01-03 [1] CRAN (R 4.0.0)
#>  sessioninfo   1.1.1   2018-11-05 [1] CRAN (R 4.0.0)
#>  stringi       1.4.6   2020-02-17 [1] CRAN (R 4.0.0)
#>  stringr       1.4.0   2019-02-10 [1] CRAN (R 4.0.0)
#>  symengine   * 0.1.3   2020-05-07 [1] CRAN (R 4.0.0)
#>  testthat      2.3.2   2020-03-02 [1] CRAN (R 4.0.0)
#>  usethis       1.6.1   2020-04-29 [1] CRAN (R 4.0.0)
#>  withr         2.2.0   2020-04-20 [1] CRAN (R 4.0.0)
#>  xfun          0.14    2020-05-20 [1] CRAN (R 4.0.0)
#>  yaml          2.2.1   2020-02-01 [1] CRAN (R 4.0.0)
#> 
#> [1] C:/R/nlmixr/R/library

[mattfidler]

For some reason it isn't working on my side. @isuruf and @Marlin-Na, as requested in a new issue.

[mattfidler]

As a note, it is a bit confusing that the package version is 0.1.3 and it states SymEngine version 0.4.1

[isuruf]

Ah, this was fixed in symengine (C++) master. 0.4.1 is the symengine C++ library version. It's different from the version of the R package.

[Marlin-Na]

I will need to update the binaries on windows.

[mattfidler]

I think that requires a new cran release for windows 👎. Its a painful process.