changelog

mentat-collective · Aug 8, 2024 · 12d72ec · 12d72ec
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diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -2,6 +2,14 @@
 
 ## [unreleased]
 
+This PR:
+
+  - Moves the `IPerturbed` implementation for functions to `emmy.function`, out
+    of `emmy.calculus.derivative`
+
+  - Adds a new `mode` parameter to `emmy.differential/extract-tangent`, in
+    preparation for allowing reverse and forward mode across all output types
+
 - #175:
 
   - Adds `emmy.env/{tau,-tau}` constants for the $\tau$ fans out there

diff --git a/src/emmy/calculus/derivative.cljc b/src/emmy/calculus/derivative.cljc
@@ -43,7 +43,7 @@
     (let [tag    (d/fresh-tag)
           lifted (d/bundle-element x 1 tag)]
       (-> (d/with-active-tag tag f [lifted])
-          (d/extract-tangent tag ::forward)))))
+          (d/extract-tangent tag d/FORWARD-MODE)))))
 
 ;; The result of applying the derivative `(D f)` of a multivariable function `f`
 ;; to a sequence of `args` is a structure of the same shape as `args` with all