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#include BLAS_HEADER
#include <interfaces/blas/C/xerbla.h>
#include <ulmblas/level3/gemm.h>
extern "C" {
void
ULMBLAS(dgemm)(const enum Trans transA,
const enum Trans transB,
const int m,
const int n,
const int k,
const double alpha,
const double *A,
const int ldA,
const double *B,
const int ldB,
const double beta,
double *C,
const int ldC)
{
//
// Set numRowsA and numRowsB as the number of rows of A and B
//
int numRowsA = (transA==NoTrans || transA==Conj) ? m : k;
int numRowsB = (transB==NoTrans || transB==Conj) ? k : n;
//
// Test the input parameters
//
int info = 0;
if (transA!=NoTrans && transA!=Trans
&& transA!=Conj && transA!=ConjTrans)
{
info = 1;
} else if (transB!=NoTrans && transB!=Trans
&& transB!=Conj && transB!=ConjTrans)
{
info = 2;
} else if (m<0) {
info = 3;
} else if (n<0) {
info = 4;
} else if (k<0) {
info = 5;
} else if (ldA<std::max(1,numRowsA)) {
info = 8;
} else if (ldB<std::max(1,numRowsB)) {
info = 10;
} else if (ldC<std::max(1,m)) {
info = 13;
}
if (info!=0) {
ULMBLAS(xerbla)("DGEMM ", &info);
}
//
// Start the operations.
//
if (transB==NoTrans || transB==Conj) {
if (transA==NoTrans || transA==Conj) {
//
// Form C := alpha*A*B + beta*C.
//
ulmBLAS::gemm(m, n, k,
alpha,
A, 1, ldA,
B, 1, ldB,
beta,
C, 1, ldC);
} else {
//
// Form C := alpha*A**T*B + beta*C
//
ulmBLAS::gemm(m, n, k,
alpha,
A, ldA, 1,
B, 1, ldB,
beta,
C, 1, ldC);
}
} else {
if (transA==NoTrans || transA==Conj) {
//
// Form C := alpha*A*B**T + beta*C
//
ulmBLAS::gemm(m, n, k,
alpha,
A, 1, ldA,
B, ldB, 1,
beta,
C, 1, ldC);
} else {
//
// Form C := alpha*A**T*B**T + beta*C
//
ulmBLAS::gemm(m, n, k,
alpha,
A, ldA, 1,
B, ldB, 1,
beta,
C, 1, ldC);
}
}
}
} // extern "C"
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