Issues

• LinearAlgebra.mul! with Matrix{Dual} does not dispatch to BLAS

  JuliaDiff/ForwardDiff.jl#854 · Filter by author abussy opened on Sep 30, 2026
  1

• missing floatmin, floatmax, and issubnormal for Dual

  JuliaDiff/ForwardDiff.jl#852 · Filter by author stevengj opened on Sep 28, 2026
  6

• gradient!, jacobian! and hessian! do not support an immutable DiffResult unless x is a StaticArray

  JuliaDiff/ForwardDiff.jl#849 · Filter by author devmotion opened on Sep 18, 2026

• gradient! leaves part of the result unwritten when f does not depend on its argument

  JuliaDiff/ForwardDiff.jl#847 · Filter by author devmotion opened on Sep 1, 2026

• hessian!(::ImmutableDiffResult, f, ::StaticArray) errors when f does not depend on its argument

  JuliaDiff/ForwardDiff.jl#846 · Filter by author devmotion opened on Sep 1, 2026
  1

• hessian: the two nested dual layers share a tag, so results depend on the code path and chunk size

  JuliaDiff/ForwardDiff.jl#845 · Filter by author devmotion opened on Sep 1, 2026

• Reusing a GradientConfig/JacobianConfig with a differently structured input silently computes wrong derivatives

  JuliaDiff/ForwardDiff.jl#842 · Filter by author devmotion opened on Aug 19, 2026

• Chunked jacobian throws for Diagonal/LowerTriangular/UpperTriangular inputs

  JuliaDiff/ForwardDiff.jl#839 · Filter by author devmotion opened on Aug 17, 2026

• gradient! writes to the wrong entries for structured inputs

  JuliaDiff/ForwardDiff.jl#838 · Filter by author devmotion opened on Aug 17, 2026

• Take advantage of symmetry in hessian

  JuliaDiff/ForwardDiff.jl#836 · Filter by author gdalle opened on Aug 15, 2026
  3

• 3-arg hypot flattens Duals with different tags, and rejects non-Type tags

  JuliaDiff/ForwardDiff.jl#834 · Filter by author devmotion opened on Aug 5, 2026

• checktag's permissive fallback silently disables tag checking (e.g. for derivative(f!, y, x, cfg))

  JuliaDiff/ForwardDiff.jl#833 · Filter by author devmotion opened on Aug 5, 2026

• jacobian(f!, y, x) doesn't work if y is complex

  JuliaDiff/ForwardDiff.jl#832 · Filter by author devmotion opened on Aug 5, 2026

• jacobian(f, x) silently returns zeros if f is complex-valued

  JuliaDiff/ForwardDiff.jl#830 · Filter by author devmotion opened on Aug 5, 2026

• derivative(f!, y, x) doesn't work if y is complex, even if x is real

  JuliaDiff/ForwardDiff.jl#818 · Filter by author wsshin opened on Jun 25, 2026
  1

• tagging API?

  JuliaDiff/ForwardDiff.jl#813 · Filter by author longemen3000 opened on Jun 8, 2026

• Deferred computation for precompilable tags?

  JuliaDiff/ForwardDiff.jl#812 · Filter by author longemen3000 opened on Jun 7, 2026

• SpecialFunctions.jl could be a weak dep?

  JuliaDiff/ForwardDiff.jl#800 · Filter by author juliohm opened on Apr 5, 2026
  1

• Wrong broadcasting in case of complex numbers

  JuliaDiff/ForwardDiff.jl#795 · Filter by author rcalxrc08 opened on Feb 17, 2026
  1

• norm() on a zero vector with non-zero partials gives nan value for v1.3.1+

  JuliaDiff/ForwardDiff.jl#794 · Filter by author marklau34 opened on Feb 12, 2026
  2

• NaN partials and comparison

  JuliaDiff/ForwardDiff.jl#790 · Filter by author aplavin opened on Dec 24, 2025
  1

• Error with ForwardDiff 1 and QuadGK

  JuliaDiff/ForwardDiff.jl#785 · Filter by author sschlenkrich opened on Nov 17, 2025
  5

• Allow Dual{T, SIMD.Vec, N}

  JuliaDiff/ForwardDiff.jl#784 · Filter by author dubosipsl opened on Nov 15, 2025

• Scalar indexing error when computing Jacobian with a CUDA.CuArray

  JuliaDiff/ForwardDiff.jl#759 · Filter by author thomvet opened on Aug 8, 2025
  3

• Modifying a single index of a vector valued function doesn't work

  JuliaDiff/ForwardDiff.jl#752 · Filter by author Nidish96 opened on Jun 5, 2025
  1