Enum SymbolicOptError 

pub enum SymbolicOptError {
    EvalError(String),
    GradEvalError(String),
    HessEvalError(String),
    DimMismatch {
        expected: usize,
        got: usize,
    },
    NotConverged {
        iters: usize,
        grad_norm: f64,
    },
    LineSearchFailed,
}

Errors from lbfgs_symbolic and trust_region_symbolic.

Variants

EvalError(String)

Objective evaluation failed.

GradEvalError(String)

Symbolic gradient evaluation failed.

HessEvalError(String)

Symbolic Hessian evaluation failed.

DimMismatch

x0.len() does not match the number of variables in the objective.

Fields

expected: usize

Variables inferred from the objective.

got: usize

Length of the supplied x0.

NotConverged

Optimizer exhausted its iteration budget without reaching tol.

Fields

iters: usize

Iteration count at termination.

grad_norm: f64

Gradient norm at termination.

LineSearchFailed

Wolfe-condition line search failed to find a suitable step.

Trait Implementations

impl Debug for SymbolicOptError

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Display for SymbolicOptError

fn fmt(&self, __formatter: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Error for SymbolicOptError

fn source(&self) -> Option<&(dyn Error + 'static)>

Returns the lower-level source of this error, if any.

fn description(&self) -> &str

👎Deprecated since 1.42.0:

use the Display impl or to_string()

fn cause(&self) -> Option<&dyn Error>

👎Deprecated since 1.33.0:

replaced by Error::source, which can support downcasting

fn provide<'a>(&'a self, request: &mut Request<'a>)

🔬This is a nightly-only experimental API. (error_generic_member_access)

Provides type-based access to context intended for error reports.