ztrti2
ztrti2 - compute the inverse of a complex upper or lower triangular matrix
SUBROUTINE ZTRTI2( UPLO, DIAG, N, A, LDA, INFO)
CHARACTER * 1 UPLO, DIAG
DOUBLE COMPLEX A(LDA,*)
INTEGER N, LDA, INFO
SUBROUTINE ZTRTI2_64( UPLO, DIAG, N, A, LDA, INFO)
CHARACTER * 1 UPLO, DIAG
DOUBLE COMPLEX A(LDA,*)
INTEGER*8 N, LDA, INFO
SUBROUTINE TRTI2( UPLO, DIAG, [N], A, [LDA], [INFO])
CHARACTER(LEN=1) :: UPLO, DIAG
COMPLEX(8), DIMENSION(:,:) :: A
INTEGER :: N, LDA, INFO
SUBROUTINE TRTI2_64( UPLO, DIAG, [N], A, [LDA], [INFO])
CHARACTER(LEN=1) :: UPLO, DIAG
COMPLEX(8), DIMENSION(:,:) :: A
INTEGER(8) :: N, LDA, INFO
#include <sunperf.h>
void ztrti2(char uplo, char diag, int n, doublecomplex *a, int lda, int *info);
void ztrti2_64(char uplo, char diag, long n, doublecomplex *a, long lda, long *info);
ztrti2 computes the inverse of a complex upper or lower triangular
matrix.
This is the Level 2 BLAS version of the algorithm.
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* UPLO (input)
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Specifies whether the matrix A is upper or lower triangular.
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* DIAG (input)
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Specifies whether or not the matrix A is unit triangular.
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* N (input)
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The order of the matrix A. N >= 0.
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* A (input/output)
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On entry, the triangular matrix A. If UPLO = 'U', the
leading n by n upper triangular part of the array A contains
the upper triangular matrix, and the strictly lower
triangular part of A is not referenced. If UPLO = 'L', the
leading n by n lower triangular part of the array A contains
the lower triangular matrix, and the strictly upper
triangular part of A is not referenced. If DIAG = 'U', the
diagonal elements of A are also not referenced and are
assumed to be 1.
On exit, the (triangular) inverse of the original matrix, in
the same storage format.
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* LDA (input)
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The leading dimension of the array A. LDA >= max(1,N).
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* INFO (output)
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