ctrtrs
ctrtrs - solve a triangular system of the form A * X = B, A**T * X = B, or A**H * X = B,
SUBROUTINE CTRTRS( UPLO, TRANSA, DIAG, N, NRHS, A, LDA, B, LDB,
* INFO)
CHARACTER * 1 UPLO, TRANSA, DIAG
COMPLEX A(LDA,*), B(LDB,*)
INTEGER N, NRHS, LDA, LDB, INFO
SUBROUTINE CTRTRS_64( UPLO, TRANSA, DIAG, N, NRHS, A, LDA, B, LDB,
* INFO)
CHARACTER * 1 UPLO, TRANSA, DIAG
COMPLEX A(LDA,*), B(LDB,*)
INTEGER*8 N, NRHS, LDA, LDB, INFO
SUBROUTINE TRTRS( UPLO, [TRANSA], DIAG, [N], [NRHS], A, [LDA], B,
* [LDB], [INFO])
CHARACTER(LEN=1) :: UPLO, TRANSA, DIAG
COMPLEX, DIMENSION(:,:) :: A, B
INTEGER :: N, NRHS, LDA, LDB, INFO
SUBROUTINE TRTRS_64( UPLO, [TRANSA], DIAG, [N], [NRHS], A, [LDA], B,
* [LDB], [INFO])
CHARACTER(LEN=1) :: UPLO, TRANSA, DIAG
COMPLEX, DIMENSION(:,:) :: A, B
INTEGER(8) :: N, NRHS, LDA, LDB, INFO
#include <sunperf.h>
void ctrtrs(char uplo, char transa, char diag, int n, int nrhs, complex *a, int lda, complex *b, int ldb, int *info);
void ctrtrs_64(char uplo, char transa, char diag, long n, long nrhs, complex *a, long lda, complex *b, long ldb, long *info);
ctrtrs solves a triangular system of the form
where A is a triangular matrix of order N, and B is an N-by-NRHS
matrix. A check is made to verify that A is nonsingular.
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* UPLO (input)
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* TRANSA (input)
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Specifies the form of the system of equations:
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* DIAG (input)
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* N (input)
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The order of the matrix A. N >= 0.
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* NRHS (input)
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The number of right hand sides, i.e., the number of columns
of the matrix B. NRHS >= 0.
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* A (input)
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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.
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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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* B (input/output)
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On entry, the right hand side matrix B.
On exit, if INFO = 0, the solution matrix X.
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* LDB (input)
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The leading dimension of the array B. LDB >= max(1,N).
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* INFO (output)
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