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SolverError

Enum SolverError 

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#[non_exhaustive]
pub enum SolverError { Mps(MpsError), DimensionMismatch { field: &'static str, expected: usize, got: usize, }, IndexOutOfBounds { context: &'static str, index: usize, bound: usize, }, SingularBasis { step: usize, }, EmptyInput { context: &'static str, }, DeadlineExceeded, NonFiniteCoefficient { field: &'static str, index: usize, }, InvalidBounds { index: usize, lb: f64, ub: f64, }, }
Expand description

ソルバー全体の統一エラー型

入力検証・数値計算・MPSパースなど、ソルバー操作中に 発生しうるエラーを統一的に表現する。

注意: Infeasible/Unbounded/MaxIterations は数学的結果であり、 エラーではないため SolveStatus で表現する。

Variants (Non-exhaustive)§

This enum is marked as non-exhaustive
Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.
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Mps(MpsError)

MPSファイルのパースエラー

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DimensionMismatch

次元不一致(配列長・行列サイズの不整合)

例: c.len() != a.ncols, トリプレット配列の長さ不一致

Fields

§field: &'static str

どのフィールド/配列が不一致か(例: “c”, “b”, “triplet_arrays”)

§expected: usize

期待されるサイズ

§got: usize

実際のサイズ

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IndexOutOfBounds

インデックスが有効範囲外

例: 行列の列インデックス、基底列インデックス

Fields

§context: &'static str

どのインデックスか(例: “column”, “row”, “basis_column”)

§index: usize

範囲外のインデックス値

§bound: usize

上限値(0..bound が有効範囲)

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SingularBasis

基底行列が特異(LU分解で数値的に特異なピボットを検出)

Fields

§step: usize

特異性が検出されたガウス消去のステップ番号

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EmptyInput

空の入力が渡された

Fields

§context: &'static str

どの入力が空か(例: “basis”)

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DeadlineExceeded

Deadline を超過した(タイムアウト)

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NonFiniteCoefficient

非有限係数(NaN または ±∞)が入力された

例: c[i] が NaN、b[j] が Inf、行列要素が NaN

Fields

§field: &'static str

どのフィールドか(“c”, “b”, “A” など)

§index: usize

最初に非有限値が検出されたインデックス

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InvalidBounds

変数境界が無効(NaN または lb > ub)

Fields

§index: usize

無効な境界を持つ変数のインデックス

§lb: f64

下限値

§ub: f64

上限値

Trait Implementations§

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impl Debug for SolverError

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

Formats the value using the given formatter. Read more
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impl Display for SolverError

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

Formats the value using the given formatter. Read more
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impl Error for SolverError

1.30.0 · Source§

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

Returns the lower-level source of this error, if any. Read more
1.0.0 · Source§

fn description(&self) -> &str

👎Deprecated since 1.42.0:

use the Display impl or to_string()

1.0.0 · Source§

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

👎Deprecated since 1.33.0:

replaced by Error::source, which can support downcasting

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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. Read more
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impl From<MpsError> for SolverError

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fn from(e: MpsError) -> Self

Converts to this type from the input type.

Auto Trait Implementations§

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> ByRef<T> for T

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fn by_ref(&self) -> &T

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impl<T> DistributionExt for T
where T: ?Sized,

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fn rand<T>(&self, rng: &mut (impl Rng + ?Sized)) -> T
where Self: Distribution<T>,

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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> IntoEither for T

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fn into_either(self, into_left: bool) -> Either<Self, Self>

Converts self into a Left variant of Either<Self, Self> if into_left is true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
where F: FnOnce(&Self) -> bool,

Converts self into a Left variant of Either<Self, Self> if into_left(&self) returns true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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impl<T> Pointable for T

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const ALIGN: usize

The alignment of pointer.
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type Init = T

The type for initializers.
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unsafe fn init(init: <T as Pointable>::Init) -> usize

Initializes a with the given initializer. Read more
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unsafe fn deref<'a>(ptr: usize) -> &'a T

Dereferences the given pointer. Read more
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unsafe fn deref_mut<'a>(ptr: usize) -> &'a mut T

Mutably dereferences the given pointer. Read more
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unsafe fn drop(ptr: usize)

Drops the object pointed to by the given pointer. Read more
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impl<T> ToString for T
where T: Display + ?Sized,

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fn to_string(&self) -> String

Converts the given value to a String. Read more
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
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impl<V, T> VZip<V> for T
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fn vzip(self) -> V

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impl<T, U> Imply<T> for U
where T: ?Sized, U: ?Sized,