gf_global_function_get — General function for querying information about global_function objects.
mat VALs = gf_global_function('val', mat PTs) mat GRADs = gf_global_function('grad', mat PTs) mat HESSs = gf_global_function('hess', mat PTs)
mat VALs = gf_global_function('val', mat PTs) Return `val` function evaluation in `PTs` (column points).
mat GRADs = gf_global_function('grad', mat PTs) Return `val` function evaluation in `PTs` (column points).
mat HESSs = gf_global_function('hess', mat PTs) Return `val` function evaluation in `PTs` (column points).