bool CLinkMatrix::leftMultiply(const CMatrix< C_FLOAT64> & m,
CMatrix< C_FLOAT64> & p) const
{
bool success = true;
if (m.numRows() != numCols())
{
return false;
}
// p := L * m = (I, L0) * m = (m, L0 * m) = (p1, p2)
p.resize(mRowPivots.size(), m.numCols());
p = 0.0;
// p1 := m
memcpy(p.array(), m.array(), sizeof(C_FLOAT64) * m.size());
// p2 := L0 * m
// p2 (numDependent x m.numCols())
char T = 'N';
C_INT M = (C_INT) m.numCols(); /* LDA, LDC */
C_INT N = (C_INT) getNumDependent();
C_INT K = (C_INT) numCols();
C_INT LDA = (C_INT) m.numCols();
C_INT LDB = (C_INT) numCols();
C_INT LDC = (C_INT) p.numCols();
C_FLOAT64 Alpha = 1.0;
C_FLOAT64 Zero = 0.0;
// DGEMM (TRANSA, TRANSB, M, N, K, ALPHA, A, LDA, B, LDB, BETA, C, LDC)
// C := alpha A B + beta C
dgemm_(&T, &T, &M, &N, &K, &Alpha,
const_cast< C_FLOAT64 * >(m.array()), &LDA,
const_cast< C_FLOAT64 * >(array()), &LDB,
&Zero, p.array() + m.size(), &LDC);
return success;
}
C_FLOAT64 * CState::resize(const unsigned C_INT32 & size)
{
if (mSize != size)
{
C_FLOAT64 * pTmp = mpValues;
if (size > 0)
{
mpValues = new C_FLOAT64[size];
memcpy(mpValues, pTmp, sizeof(C_FLOAT64) * std::min(mSize, size));
}
else
mpValues = NULL;
pdeletev(pTmp);
mSize = size;
}
updateIterator(getNumIndependent(), getNumDependent(), getNumFixed());
return mpValues;
}