Fix mis-reverted merge.

rxwei · rxwei · commit ec887ccdd79b · 2019-12-12T13:38:39.000-08:00
diff --git a/docs/DifferentiableProgramming.md b/docs/DifferentiableProgramming.md
@@ -1735,7 +1735,7 @@ where Self: Differentiable & FloatingPoint, Self == Self.TangentVector {
 
     @inlinable
     @derivative(of: log)
-    static func _(_ x: Self) -> (value: Self, differential: @differential(linear) (Self) -> Self) {
+    static func _(_ x: Self) -> (value: Self, differential: @differentiable(linear) (Self) -> Self) {
         (log(x), { dx in 1 / x * dx })
     }
 

Original file line number	Diff line number	Diff line change
`@@ -1735,7 +1735,7 @@ where Self: Differentiable & FloatingPoint, Self == Self.TangentVector {`
`1735`	`1735`
`1736`	`1736`	`@inlinable`
`1737`	`1737`	`@derivative(of: log)`
`1738`		`- static func _(_ x: Self) -> (value: Self, differential: @differential(linear) (Self) -> Self) {`
	`1738`	`+ static func _(_ x: Self) -> (value: Self, differential: @differentiable(linear) (Self) -> Self) {`
`1739`	`1739`	`(log(x), { dx in 1 / x * dx })`
`1740`	`1740`	`}`
`1741`	`1741`