Function calculate_structural_pattern_vjp 

pub fn calculate_structural_pattern_vjp(
    cell: UnitCell,
    space_group: &SpaceGroup,
    input: &StructuralPatternInputView<'_>,
    sample_weights: &[f64],
) -> Result<StructuralPatternVjpResult, StructuralPatternError>

Calculate a full structural-pattern transpose product from sample weights.

Errors

Returns StructuralPatternError for invalid inputs or sample weights.