Unix/Linux Go Back    


CentOS 7.0 - man page for strmm (centos section 3)

Linux & Unix Commands - Search Man Pages
Man Page or Keyword Search:   man
Select Man Page Set:       apropos Keyword Search (sections above)


strmm.f(3)				      LAPACK				       strmm.f(3)

NAME
       strmm.f -

SYNOPSIS
   Functions/Subroutines
       subroutine strmm (SIDE, UPLO, TRANSA, DIAG, M, N, ALPHA, A, LDA, B, LDB)
	   STRMM

Function/Subroutine Documentation
   subroutine strmm (characterSIDE, characterUPLO, characterTRANSA, characterDIAG, integerM,
       integerN, realALPHA, real, dimension(lda,*)A, integerLDA, real, dimension(ldb,*)B,
       integerLDB)
       STRMM Purpose:

	    STRMM  performs one of the matrix-matrix operations

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

	    where  alpha  is a scalar,	B  is an m by n matrix,  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.

       Parameters:
	   SIDE

		     SIDE is CHARACTER*1
		      On entry,  SIDE specifies whether  op( A ) multiplies B from
		      the left or right as follows:

			 SIDE = 'L' or 'l'   B := alpha*op( A )*B.

			 SIDE = 'R' or 'r'   B := alpha*B*op( A ).

	   UPLO

		     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.

	   TRANSA

		     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.

	   DIAG

		     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.

	   M

		     M is INTEGER
		      On entry, M specifies the number of rows of B. M must be at
		      least zero.

	   N

		     N is INTEGER
		      On entry, N specifies the number of columns of B.  N must be
		      at least zero.

	   ALPHA

		     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.

	   A

		     A is REAL array of DIMENSION ( LDA, k ), where k is m
		      when  SIDE = 'L' or 'l'  and 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.

	   LDA

		     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 ).

	   B

		     B is REAL array of DIMENSION ( LDB, n ).
		      Before entry,  the leading  m by n part of the array  B must
		      contain the matrix  B,  and  on exit  is overwritten  by the
		      transformed matrix.

	   LDB

		     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 ).

       Author:
	   Univ. of Tennessee

	   Univ. of California Berkeley

	   Univ. of Colorado Denver

	   NAG Ltd.

       Date:
	   November 2011

       Further Details:

	     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.

       Definition at line 178 of file strmm.f.

Author
       Generated automatically by Doxygen for LAPACK from the source code.

Version 3.4.2				 Tue Sep 25 2012			       strmm.f(3)
Unix & Linux Commands & Man Pages : ©2000 - 2018 Unix and Linux Forums


All times are GMT -4. The time now is 01:24 AM.