MatAXPY for the difference, MatNorm for the relative error On Thu, Jan 2, 2025, 22:32 Hammond, Glenn E via petsc-users < petsc-users@mcs.anl.gov> wrote:
> PETSc Users, > > > > I want to compare two Jacobians matrices (one with derivatives calculated > analytically; the other numerically). I want to apply relatives and/or > absolute tolerances. Does anyone know if such capability is built into > PETSc? I cannot find anything other the MatEqual() with compares down to > the bit. Otherwise, I plan to use MatGetValues() and compare the elements > individually. Just hoping there is something more convenient hidden > somewhere. > > > > Thanks, > > > > Glenn >
