dgemm - matrix operations C := alpha*op( A )*op( B ) + beta*C
SUBROUTINE DGEMM(TRANSA, TRANSB, M, N, K, ALPHA, A, LDA, B, LDB, BETA, C, LDC) CHARACTER*1 TRANSA, TRANSB INTEGER M, N, K, LDA, LDB, LDC DOUBLE PRECISION ALPHA, BETA DOUBLE PRECISION A(LDA,*), B(LDB,*), C(LDC,*) SUBROUTINE DGEMM_64(TRANSA, TRANSB, M, N, K, ALPHA, A, LDA, B, LDB, BETA, C, LDC) CHARACTER*1 TRANSA, TRANSB INTEGER*8 M, N, K, LDA, LDB, LDC DOUBLE PRECISION ALPHA, BETA DOUBLE PRECISION A(LDA,*), B(LDB,*), C(LDC,*) F95 INTERFACE SUBROUTINE GEMM(TRANSA, TRANSB, M, N, K, ALPHA, A, LDA, B, LDB, BETA, C, LDC) CHARACTER(LEN=1) :: TRANSA, TRANSB INTEGER :: M, N, K, LDA, LDB, LDC REAL(8) :: ALPHA, BETA REAL(8), DIMENSION(:,:) :: A, B, C SUBROUTINE GEMM_64(TRANSA, TRANSB, M, N, K, ALPHA, A, LDA, B, LDB, BETA, C, LDC) CHARACTER(LEN=1) :: TRANSA, TRANSB INTEGER(8) :: M, N, K, LDA, LDB, LDC REAL(8) :: ALPHA, BETA REAL(8), DIMENSION(:,:) :: A, B, C C INTERFACE #include <sunperf.h> void dgemm(char transa, char transb, int m, int n, int k, double alpha, double *a, int lda, double *b, int ldb, double beta, double *c, int ldc); void dgemm_64(char transa, char transb, long m, long n, long k, double alpha, double *a, long lda, double *b, long ldb, double beta, double *c, long ldc);
Oracle Solaris Studio Performance Library dgemm(3P) NAME dgemm - perform one of the matrix-matrix operations C := alpha*op( A )*op( B ) + beta*C SYNOPSIS SUBROUTINE DGEMM(TRANSA, TRANSB, M, N, K, ALPHA, A, LDA, B, LDB, BETA, C, LDC) CHARACTER*1 TRANSA, TRANSB INTEGER M, N, K, LDA, LDB, LDC DOUBLE PRECISION ALPHA, BETA DOUBLE PRECISION A(LDA,*), B(LDB,*), C(LDC,*) SUBROUTINE DGEMM_64(TRANSA, TRANSB, M, N, K, ALPHA, A, LDA, B, LDB, BETA, C, LDC) CHARACTER*1 TRANSA, TRANSB INTEGER*8 M, N, K, LDA, LDB, LDC DOUBLE PRECISION ALPHA, BETA DOUBLE PRECISION A(LDA,*), B(LDB,*), C(LDC,*) F95 INTERFACE SUBROUTINE GEMM(TRANSA, TRANSB, M, N, K, ALPHA, A, LDA, B, LDB, BETA, C, LDC) CHARACTER(LEN=1) :: TRANSA, TRANSB INTEGER :: M, N, K, LDA, LDB, LDC REAL(8) :: ALPHA, BETA REAL(8), DIMENSION(:,:) :: A, B, C SUBROUTINE GEMM_64(TRANSA, TRANSB, M, N, K, ALPHA, A, LDA, B, LDB, BETA, C, LDC) CHARACTER(LEN=1) :: TRANSA, TRANSB INTEGER(8) :: M, N, K, LDA, LDB, LDC REAL(8) :: ALPHA, BETA REAL(8), DIMENSION(:,:) :: A, B, C C INTERFACE #include <sunperf.h> void dgemm(char transa, char transb, int m, int n, int k, double alpha, double *a, int lda, double *b, int ldb, double beta, double *c, int ldc); void dgemm_64(char transa, char transb, long m, long n, long k, double alpha, double *a, long lda, double *b, long ldb, double beta, double *c, long ldc); 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', 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. ARGUMENTS TRANSA (input) 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'. TRANSA = 'C' or 'c', op( A ) = A'. Unchanged on exit. TRANSB (input) 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'. TRANSB = 'C' or 'c', op( B ) = B'. Unchanged on exit. M (input) On entry, M specifies the number of rows of the matrix op( A ) and of the matrix C. M must be at least zero. Unchanged on exit. N (input) 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. Unchanged on exit. K (input) 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. Unchanged on exit. ALPHA (input) On entry, ALPHA specifies the scalar alpha. Unchanged on exit. A (input) 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. Unchanged on exit. LDA (input) On entry, LDA specifies the first dimension of A as declared in the calling (sub) program. When TRANSA = 'N' or 'n' then LDA >= max( 1, m ), otherwise LDA >= max( 1, k ). Unchanged on exit. B (input) 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. Unchanged on exit. LDB (input) On entry, LDB specifies the first dimension of B as declared in the calling (sub) program. When TRANSB = 'N' or 'n' then LDB >= max( 1, k ), otherwise LDB >= max( 1, n ). Unchanged on exit. BETA (input) On entry, BETA specifies the scalar beta. When BETA is supplied as zero then C need not be set on input. Unchanged on exit. C (input/output) 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 over- written by the m by n matrix ( alpha*op( A )*op( B ) + beta*C ). LDC (input) On entry, LDC specifies the first dimension of C as declared in the calling (sub) program. LDC >= max( 1, m ). Unchanged on exit. 7 Nov 2015 dgemm(3P)