Enum EquationError 

pub enum EquationError {
    BuildEvalexprError(EvalexprError<DefaultNumericTypes>),
    BuildJITError(ConvertError),
    BuildFunctionError(BuilderError),
    DerivativeNotFound(String),
    InvalidInputLength {
        expected: usize,
        got: usize,
    },
    VariableNotFound(String),
    InvalidOutputLength {
        expected: usize,
        got: usize,
    },
    MatrixOutputRequired,
    InvalidMatrixDimensions {
        expected_rows: usize,
        expected_cols: usize,
        got_rows: usize,
        got_cols: usize,
    },
}

High-level errors that can occur when working with mathematical equations.

This enum represents the various ways that equation parsing, compilation, and differentiation can fail. It wraps lower-level errors from the expression conversion and JIT compilation stages.

Variants

BuildEvalexprError(EvalexprError<DefaultNumericTypes>)

Error when parsing the initial expression string with evalexpr

BuildJITError(ConvertError)

Error when converting from evalexpr AST to our internal JIT-compatible AST representation

BuildFunctionError(BuilderError)

Error when JIT compiling the expression

DerivativeNotFound(String)

Error when trying to get derivative for a variable that doesn’t exist

InvalidInputLength

Error when the input length is not the same as the number of variables

Fields

expected: usize

got: usize

VariableNotFound(String)

Error when a variable is not found in the equation

InvalidOutputLength

Error when the output length is not the same as the number of equations

Fields

expected: usize

got: usize

MatrixOutputRequired

Error when the output type is wrong

InvalidMatrixDimensions

Error when the matrix dimensions are invalid

Fields

expected_rows: usize

expected_cols: usize

got_rows: usize

got_cols: usize

Trait Implementations

impl Debug for EquationError

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

Formats the value using the given formatter.

impl Display for EquationError

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

Formats the value using the given formatter.

impl Error for EquationError

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.

impl From<BuilderError> for EquationError

fn from(source: BuilderError) -> Self

Converts to this type from the input type.

impl From<ConvertError> for EquationError

fn from(source: ConvertError) -> Self

Converts to this type from the input type.

impl From<EvalexprError> for EquationError

fn from(source: EvalexprError<DefaultNumericTypes>) -> Self

Converts to this type from the input type.