Struct melior::dialect::ods::tosa::TableOperation

pub struct TableOperation<'c> { /* private fields */ }

A table operation. Table lookup op.

Interpolated table lookup operation. Input values are scaled to create a fixed-point 9.7 value. The high 9 bits are used to index into the table. The fractional bits are used to interpolate based on the looked up value and the index+1 value in the table. The TABLE operator then returns a 16.7 interpolated value. Note that there must be 513 values to handle the full range of inputs.

The TABLE operator is expected to be used as follows:

• A RESCALE node is expected before the TABLE operator to scale the input to a full int16_t range for the table lookup
• If an int16_t result is required then follow the TABLE operator with a RESCALE with a right shift of 7
• If an int8_t result is required then follow the TABLE operator with a RESCALE with a right shift of 15

Implementations

impl<'c> TableOperation<'c>

pub fn name() -> &'static str

Returns a name.

pub fn as_operation(&self) -> &Operation<'c>

Returns a generic operation.

pub fn builder( context: &'c Context, location: Location<'c> ) -> TableOperationBuilder<'c, Unset, Unset, Unset>

Creates a builder.

pub fn output(&self) -> Result<OperationResult<'c, '_>, Error>

pub fn input(&self) -> Result<Value<'c, '_>, Error>

pub fn table(&self) -> Result<Value<'c, '_>, Error>

Trait Implementations

impl<'c> From<TableOperation<'c>> for Operation<'c>

fn from(operation: TableOperation<'c>) -> Self

Converts to this type from the input type.

impl<'c> TryFrom<Operation<'c>> for TableOperation<'c>

type Error = Error

The type returned in the event of a conversion error.

fn try_from(operation: Operation<'c>) -> Result<Self, Self::Error>

Performs the conversion.