devtools/eigen
1
0
Fork 0
mirror of https://gitlab.com/libeigen/eigen.git synced 2026-04-10 11:34:33 +08:00
Code Issues Packages Projects Releases Wiki Activity

As discussed on ML:

Browse Source 
* remove the automatic resizing feature of operator =
 * add function Matrix::set() to be used when the previous
   behavior is wanted
 * the default constructor of dynamic-size matrices now
   creates a "null" matrix (data=0, rows = cols = 0)
   instead of a 1x1 matrix
 * fix UnixX typos ;)
This commit is contained in:
Gael Guennebaud
2008-10-24 21:42:03 +00:00
parent 65abb4c52e
commit 8ea8b481de
10 changed files with 93 additions and 13 deletions
Download Patch File Download Diff File Expand all files Collapse all files

3
Eigen/src/Core/Product.h
View File

@@ -312,6 +312,7 @@ struct ei_product_coeff_impl<NoVectorization, Dynamic, Lhs, Rhs>
{
inline static void run(int row, int col, const Lhs& lhs, const Rhs& rhs, typename Lhs::Scalar& res)
{
ei_assert(lhs.cols()>0 && "you are using a non initialized matrix");
res = lhs.coeff(row, 0) * rhs.coeff(0, col);
for(int i = 1; i < lhs.cols(); i++)
res += lhs.coeff(row, i) * rhs.coeff(i, col);
@@ -469,6 +470,7 @@ struct ei_product_packet_impl<RowMajor, Dynamic, Lhs, Rhs, PacketScalar, LoadMod
{
inline static void run(int row, int col, const Lhs& lhs, const Rhs& rhs, PacketScalar& res)
{
ei_assert(lhs.cols()>0 && "you are using a non initialized matrix");
res = ei_pmul(ei_pset1(lhs.coeff(row, 0)),rhs.template packet<LoadMode>(0, col));
for(int i = 1; i < lhs.cols(); i++)
res = ei_pmadd(ei_pset1(lhs.coeff(row, i)), rhs.template packet<LoadMode>(i, col), res);
@@ -480,6 +482,7 @@ struct ei_product_packet_impl<ColMajor, Dynamic, Lhs, Rhs, PacketScalar, LoadMod
{
inline static void run(int row, int col, const Lhs& lhs, const Rhs& rhs, PacketScalar& res)
{
ei_assert(lhs.cols()>0 && "you are using a non initialized matrix");
res = ei_pmul(lhs.template packet<LoadMode>(row, 0), ei_pset1(rhs.coeff(0, col)));
for(int i = 1; i < lhs.cols(); i++)
res = ei_pmadd(lhs.template packet<LoadMode>(row, i), ei_pset1(rhs.coeff(i, col)), res);