langt Interface

public interface langt

LANGT returns the value of the one norm, or the Frobenius norm, or the infinity norm, or the element of largest absolute value of a complex tridiagonal matrix A.

Functions

public pure function clangt(norm, n, dl, d, du)

Arguments

Type	Intent	Optional	Attributes		Name
character(len=1),	intent(in)			::	norm
integer(kind=ilp),	intent(in)			::	n
complex(kind=sp),	intent(in)			::	dl(*)
complex(kind=sp),	intent(in)			::	d(*)
complex(kind=sp),	intent(in)			::	du(*)

Return Value real(kind=sp)

public pure function dlangt(norm, n, dl, d, du)

Arguments

Type	Intent	Optional	Attributes		Name
character(len=1),	intent(in)			::	norm
integer(kind=ilp),	intent(in)			::	n
real(kind=dp),	intent(in)			::	dl(*)
real(kind=dp),	intent(in)			::	d(*)
real(kind=dp),	intent(in)			::	du(*)

Return Value real(kind=dp)

public pure function slangt(norm, n, dl, d, du)

Arguments

Type	Intent	Optional	Attributes		Name
character(len=1),	intent(in)			::	norm
integer(kind=ilp),	intent(in)			::	n
real(kind=sp),	intent(in)			::	dl(*)
real(kind=sp),	intent(in)			::	d(*)
real(kind=sp),	intent(in)			::	du(*)

Return Value real(kind=sp)

public pure function zlangt(norm, n, dl, d, du)

Arguments

Type	Intent	Optional	Attributes		Name
character(len=1),	intent(in)			::	norm
integer(kind=ilp),	intent(in)			::	n
complex(kind=dp),	intent(in)			::	dl(*)
complex(kind=dp),	intent(in)			::	d(*)
complex(kind=dp),	intent(in)			::	du(*)

Return Value real(kind=dp)

Module Procedures

public interface stdlib_clangt()

Arguments

None

public interface stdlib_dlangt()

Arguments

None

public interface stdlib_slangt()

Arguments

None

public interface stdlib_zlangt()

Arguments

None