ilauplo

Translates a character string specifying an upper- or lower-triangular matrix to the relevant BLAST-specified integer constant.

Syntax

val = ilauplo( uplo )

Include Files

The FORTRAN 77 interfaces are specified in the mkl_lapack.fi include file (to be used in Fortran programs) and in the mkl_lapack.h include file (to be used in C programs).

Description

The ilauplo function translates a character string specifying an upper- or lower-triangular matrix to the relevant BLAST-specified integer constant.

The function returns an INTEGER. If val < 0, the input is not a character indicating an upper- or lower-triangular matrix. Otherwise, the function returns the constant value corresponding to uplo.

Input Parameters

diag

CHARACTER.

Specifies the form of the system of equations:

If diag = 'U': A is upper triangular.

If diag = 'L': A is lower triangular.

Output Parameters

val

INTEGER

Value returned by the function.