.TH "BLAS/SRC/strsm.f" 3 "Version 3.12.0" "LAPACK" \" -*- nroff -*-
.ad l
.nh
.SH NAME
BLAS/SRC/strsm.f
.SH SYNOPSIS
.br
.PP
.SS "Functions/Subroutines"

.in +1c
.ti -1c
.RI "subroutine \fBstrsm\fP (side, uplo, transa, diag, m, n, alpha, a, lda, b, ldb)"
.br
.RI "\fBSTRSM\fP "
.in -1c
.SH "Function/Subroutine Documentation"
.PP 
.SS "subroutine strsm (character side, character uplo, character transa, character diag, integer m, integer n, real alpha, real, dimension(lda,*) a, integer lda, real, dimension(ldb,*) b, integer ldb)"

.PP
\fBSTRSM\fP 
.PP
\fBPurpose:\fP
.RS 4

.PP
.nf
 STRSM  solves one of the matrix equations

    op( A )*X = alpha*B,   or   X*op( A ) = alpha*B,

 where alpha is a scalar, X and B are m by n matrices, A is a unit, or
 non-unit,  upper or lower triangular matrix  and  op( A )  is one  of

    op( A ) = A   or   op( A ) = A**T\&.

 The matrix X is overwritten on B\&.
.fi
.PP
 
.RE
.PP
\fBParameters\fP
.RS 4
\fISIDE\fP 
.PP
.nf
          SIDE is CHARACTER*1
           On entry, SIDE specifies whether op( A ) appears on the left
           or right of X as follows:

              SIDE = 'L' or 'l'   op( A )*X = alpha*B\&.

              SIDE = 'R' or 'r'   X*op( A ) = alpha*B\&.
.fi
.PP
.br
\fIUPLO\fP 
.PP
.nf
          UPLO is CHARACTER*1
           On entry, UPLO specifies whether the matrix A is an upper or
           lower triangular matrix as follows:

              UPLO = 'U' or 'u'   A is an upper triangular matrix\&.

              UPLO = 'L' or 'l'   A is a lower triangular matrix\&.
.fi
.PP
.br
\fITRANSA\fP 
.PP
.nf
          TRANSA is CHARACTER*1
           On entry, TRANSA specifies the form of op( A ) to be used in
           the matrix multiplication as follows:

              TRANSA = 'N' or 'n'   op( A ) = A\&.

              TRANSA = 'T' or 't'   op( A ) = A**T\&.

              TRANSA = 'C' or 'c'   op( A ) = A**T\&.
.fi
.PP
.br
\fIDIAG\fP 
.PP
.nf
          DIAG is CHARACTER*1
           On entry, DIAG specifies whether or not A is unit triangular
           as follows:

              DIAG = 'U' or 'u'   A is assumed to be unit triangular\&.

              DIAG = 'N' or 'n'   A is not assumed to be unit
                                  triangular\&.
.fi
.PP
.br
\fIM\fP 
.PP
.nf
          M is INTEGER
           On entry, M specifies the number of rows of B\&. M must be at
           least zero\&.
.fi
.PP
.br
\fIN\fP 
.PP
.nf
          N is INTEGER
           On entry, N specifies the number of columns of B\&.  N must be
           at least zero\&.
.fi
.PP
.br
\fIALPHA\fP 
.PP
.nf
          ALPHA is REAL
           On entry,  ALPHA specifies the scalar  alpha\&. When  alpha is
           zero then  A is not referenced and  B need not be set before
           entry\&.
.fi
.PP
.br
\fIA\fP 
.PP
.nf
          A is REAL array, dimension ( LDA, k ),
           where k is m when SIDE = 'L' or 'l'
             and k is n when SIDE = 'R' or 'r'\&.
           Before entry  with  UPLO = 'U' or 'u',  the  leading  k by k
           upper triangular part of the array  A must contain the upper
           triangular matrix  and the strictly lower triangular part of
           A is not referenced\&.
           Before entry  with  UPLO = 'L' or 'l',  the  leading  k by k
           lower triangular part of the array  A must contain the lower
           triangular matrix  and the strictly upper triangular part of
           A is not referenced\&.
           Note that when  DIAG = 'U' or 'u',  the diagonal elements of
           A  are not referenced either,  but are assumed to be  unity\&.
.fi
.PP
.br
\fILDA\fP 
.PP
.nf
          LDA is INTEGER
           On entry, LDA specifies the first dimension of A as declared
           in the calling (sub) program\&.  When  SIDE = 'L' or 'l'  then
           LDA  must be at least  max( 1, m ),  when  SIDE = 'R' or 'r'
           then LDA must be at least max( 1, n )\&.
.fi
.PP
.br
\fIB\fP 
.PP
.nf
          B is REAL array, dimension ( LDB, N )
           Before entry,  the leading  m by n part of the array  B must
           contain  the  right-hand  side  matrix  B,  and  on exit  is
           overwritten by the solution matrix  X\&.
.fi
.PP
.br
\fILDB\fP 
.PP
.nf
          LDB is INTEGER
           On entry, LDB specifies the first dimension of B as declared
           in  the  calling  (sub)  program\&.   LDB  must  be  at  least
           max( 1, m )\&.
.fi
.PP
 
.RE
.PP
\fBAuthor\fP
.RS 4
Univ\&. of Tennessee 
.PP
Univ\&. of California Berkeley 
.PP
Univ\&. of Colorado Denver 
.PP
NAG Ltd\&. 
.RE
.PP
\fBFurther Details:\fP
.RS 4

.PP
.nf
  Level 3 Blas routine\&.


  -- Written on 8-February-1989\&.
     Jack Dongarra, Argonne National Laboratory\&.
     Iain Duff, AERE Harwell\&.
     Jeremy Du Croz, Numerical Algorithms Group Ltd\&.
     Sven Hammarling, Numerical Algorithms Group Ltd\&.
.fi
.PP
 
.RE
.PP

.PP
Definition at line \fB180\fP of file \fBstrsm\&.f\fP\&.
.SH "Author"
.PP 
Generated automatically by Doxygen for LAPACK from the source code\&.