is_within_band Function

private pure function is_within_band(matrix, row, col)

Checks if a given position (row, col) is within the banded structure. For uplo = "U" the position is within the band if $$max(1, col - kd) \leq row \leq col,$$ for uplo = "L" the position is within the band if $$col \leq row \leq min(n, col + kd)$$ with $kd$ the number of sub/superdiagonals and $n$ the number of rows/columns.

Arguments

Type	Intent	Optional	Attributes		Name
class(hermitian_banded_matrix_t),	intent(in)			::	matrix	Hermitian banded matrix structure
integer,	intent(in)			::	row	the row index
integer,	intent(in)			::	col	the column index

Return Value logical

Contents

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