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dgemm.f(3)				      LAPACK				       dgemm.f(3)

NAME
       dgemm.f -

SYNOPSIS
   Functions/Subroutines
       subroutine dgemm (TRANSA, TRANSB, M, N, K, ALPHA, A, LDA, B, LDB, BETA, C, LDC)
	   DGEMM

Function/Subroutine Documentation
   subroutine dgemm (characterTRANSA, characterTRANSB, integerM, integerN, integerK, double
       precisionALPHA, double precision, dimension(lda,*)A, integerLDA, double precision,
       dimension(ldb,*)B, integerLDB, double precisionBETA, double precision, dimension(ldc,*)C,
       integerLDC)
       DGEMM Purpose:

	    DGEMM  performs one of the matrix-matrix operations

	       C := alpha*op( A )*op( B ) + beta*C,

	    where  op( X ) is one of

	       op( X ) = X   or   op( X ) = X**T,

	    alpha and beta are scalars, and A, B and C are matrices, with op( A )
	    an m by k matrix,  op( B )	a  k by n matrix and  C an m by n matrix.

       Parameters:
	   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.

	   TRANSB

		     TRANSB is CHARACTER*1
		      On entry, TRANSB specifies the form of op( B ) to be used in
		      the matrix multiplication as follows:

			 TRANSB = 'N' or 'n',  op( B ) = B.

			 TRANSB = 'T' or 't',  op( B ) = B**T.

			 TRANSB = 'C' or 'c',  op( B ) = B**T.

	   M

		     M is INTEGER
		      On entry,  M  specifies  the number  of rows  of the  matrix
		      op( A )  and of the  matrix  C.  M  must	be at least  zero.

	   N

		     N is INTEGER
		      On entry,  N  specifies the number  of columns of the matrix
		      op( B ) and the number of columns of the matrix C. N must be
		      at least zero.

	   K

		     K is INTEGER
		      On entry,  K  specifies  the number of columns of the matrix
		      op( A ) and the number of rows of the matrix op( B ). K must
		      be at least  zero.

	   ALPHA

		     ALPHA is DOUBLE PRECISION.
		      On entry, ALPHA specifies the scalar alpha.

	   A

		     A is DOUBLE PRECISION array of DIMENSION ( LDA, ka ), where ka is
		      k  when  TRANSA = 'N' or 'n',  and is  m	otherwise.
		      Before entry with  TRANSA = 'N' or 'n',  the leading  m by k
		      part of the array  A  must contain the matrix  A,  otherwise
		      the leading  k by m  part of the array  A  must contain  the
		      matrix A.

	   LDA

		     LDA is INTEGER
		      On entry, LDA specifies the first dimension of A as declared
		      in the calling (sub) program. When  TRANSA = 'N' or 'n' then
		      LDA must be at least  max( 1, m ), otherwise  LDA must be at
		      least  max( 1, k ).

	   B

		     B is DOUBLE PRECISION array of DIMENSION ( LDB, kb ), where kb is
		      n  when  TRANSB = 'N' or 'n',  and is  k	otherwise.
		      Before entry with  TRANSB = 'N' or 'n',  the leading  k by n
		      part of the array  B  must contain the matrix  B,  otherwise
		      the leading  n by k  part of the array  B  must contain  the
		      matrix B.

	   LDB

		     LDB is INTEGER
		      On entry, LDB specifies the first dimension of B as declared
		      in the calling (sub) program. When  TRANSB = 'N' or 'n' then
		      LDB must be at least  max( 1, k ), otherwise  LDB must be at
		      least  max( 1, n ).

	   BETA

		     BETA is DOUBLE PRECISION.
		      On entry,  BETA  specifies the scalar  beta.  When  BETA	is
		      supplied as zero then C need not be set on input.

	   C

		     C is DOUBLE PRECISION array of DIMENSION ( LDC, n ).
		      Before entry, the leading  m by n  part of the array  C must
		      contain the matrix  C,  except when  beta  is zero, in which
		      case C need not be set on entry.
		      On exit, the array  C  is overwritten by the  m by n  matrix
		      ( alpha*op( A )*op( B ) + beta*C ).

	   LDC

		     LDC is INTEGER
		      On entry, LDC specifies the first dimension of C as declared
		      in  the  calling	(sub)  program.   LDC  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 188 of file dgemm.f.

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

Version 3.4.2				 Tue Sep 25 2012			       dgemm.f(3)
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