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#include <ulmblas.h>
#include <auxiliary/xerbla.h>
#include <level3/dgemm_nn.h>
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)
{
//
// Local scalars
//
int i, j;
//
// Quick return if possible.
//
if (m==0 || n==0 || ((alpha==0.0 || k==0) && (beta==1.0))) {
return;
}
//
// And if alpha is exactly zero
//
if (alpha==0.0) {
if (beta==0.0) {
for (j=0; j<n; ++j) {
for (i=0; i<m; ++i) {
C[i+j*ldC] = 0.0;
}
}
} else {
for (j=0; j<n; ++j) {
for (i=0; i<m; ++i) {
C[i+j*ldC] *= beta;
}
}
}
return;
}
//
// Start the operations.
//
if (transB==NoTrans || transB==Conj) {
if (transA==NoTrans || transA==Conj) {
//
// Form C := alpha*A*B + beta*C.
//
dgemm_nn(m, n, k,
alpha,
A, 1, ldA,
B, 1, ldB,
beta,
C, 1, ldC);
} else {
//
// Form C := alpha*A**T*B + beta*C
//
dgemm_nn(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
//
dgemm_nn(m, n, k,
alpha,
A, 1, ldA,
B, ldB, 1,
beta,
C, 1, ldC);
} else {
//
// Form C := alpha*A**T*B**T + beta*C
//
dgemm_nn(m, n, k,
alpha,
A, ldA, 1,
B, ldB, 1,
beta,
C, 1, ldC);
}
}
}
void
F77BLAS(dgemm)(const char *_transA,
const char *_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)
{
//
// Dereference scalar parameters
//
enum Trans transA = charToTranspose(*_transA);
enum Trans transB = charToTranspose(*_transB);
int m = *_m;
int n = *_n;
int k = *_k;
double alpha = *_alpha;
int ldA = *_ldA;
int ldB = *_ldB;
double beta = *_beta;
int ldC = *_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==0) {
info = 1;
} else if (transB==0) {
info = 2;
} else if (m<0) {
info = 3;
} else if (n<0) {
info = 4;
} else if (k<0) {
info = 5;
} else if (ldA<max(1,numRowsA)) {
info = 8;
} else if (ldB<max(1,numRowsB)) {
info = 10;
} else if (ldC<max(1,m)) {
info = 13;
}
if (info!=0) {
F77BLAS(xerbla)("DGEMM ", &info);
}
ULMBLAS(dgemm)(transA, transB,
m, n, k,
alpha,
A, ldA,
B, ldB,
beta,
C, ldC);
}
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