SUBROUTINE SSTTRS( N, NRHS, L, D, SUBL, B, LDB, IPIV, INFO) INTEGER N, NRHS, LDB, INFO INTEGER IPIV(*) REAL L(*), D(*), SUBL(*), B(LDB,*) SUBROUTINE SSTTRS_64( N, NRHS, L, D, SUBL, B, LDB, IPIV, INFO) INTEGER*8 N, NRHS, LDB, INFO INTEGER*8 IPIV(*) REAL L(*), D(*), SUBL(*), B(LDB,*)
SUBROUTINE STTRS( N, NRHS, L, D, SUBL, B, [LDB], IPIV, [INFO]) INTEGER :: N, NRHS, LDB, INFO INTEGER, DIMENSION(:) :: IPIV REAL, DIMENSION(:) :: L, D, SUBL REAL, DIMENSION(:,:) :: B SUBROUTINE STTRS_64( N, NRHS, L, D, SUBL, B, [LDB], IPIV, [INFO]) INTEGER(8) :: N, NRHS, LDB, INFO INTEGER(8), DIMENSION(:) :: IPIV REAL, DIMENSION(:) :: L, D, SUBL REAL, DIMENSION(:,:) :: B
void ssttrs(int n, int nrhs, float *l, float *d, float *subl, float *b, int ldb, int *ipiv, int *info);
void ssttrs_64(long n, long nrhs, float *l, float *d, float *subl, float *b, long ldb, long *ipiv, long *info);
INTEGER
The order of the matrix A. N >= 0.
INTEGER
The number of right hand sides, i.e., the number of columns of the matrix B. NRHS >= 0.
REAL array, dimension (N-1)
On entry, the subdiagonal elements of LL and DD.
REAL array, dimension (N)
On entry, the diagonal elements of DD.
REAL array, dimension (N-2)
On entry, the second subdiagonal elements of LL.
REAL array, dimension
(LDB, NRHS) On entry, the N-by-NRHS right hand side matrix B. On exit, if INFO = 0, the N-by-NRHS solution matrix X.
INTEGER
The leading dimension of the array B. LDB >= max(1, N)
INTEGER array, dimension (N)
Details of the interchanges and block pivot. If IPIV(K) > 0, 1 by 1 pivot, and if IPIV(K) = K + 1 an interchange done; If IPIV(K) < 0, 2 by 2 pivot, no interchange required.
INTEGER