tensorstore::GetAffineTransformInverseDomain

#include "tensorstore/index_interval.h"

Result<IndexInterval> tensorstore::GetAffineTransformInverseDomain(IndexInterval interval, Index offset, Index divisor);

Computes the interval containing all indices x for which (x - offset) / divisor is in interval, where / rounds towards 0.

The result is the same as GetAffineTransformRange, except that for non-empty interval:

if divisor > 0: the upper bound is expanded by divisor - 1;
if divisor < 0: the lower bound is expanded by -divisor - 1.

For example:

GetAffineTransformRange([2, 4], 1, 3) -> [ 7, 13] GetAffineTransformInverseDomain([2, 4], 1, 3) -> [ 7, 15] GetAffineTransformRange([2, 4], 1, -3) -> [-11, -5] GetAffineTransformInverseDomain([2, 4], 1, -3) -> [-13, -5]

Parameters:¶

IndexInterval interval¶: The domain of the affine transform.
Index offset¶: The offset of the affine transform.
Index divisor¶: The multiplier of the affine transform.

Returns:¶

The range of the affine transform.

Error absl::StatusCode::kInvalidArgument:¶

if the result interval cannot be represented.