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Commit c596cebb authored by Davis King's avatar Davis King
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Improved the BLAS binding system. It should now break expressions up into 

their proper basic BLAS function calls.

--HG--
extra : convert_revision : svn%3Afdd8eb12-d10e-0410-9acb-85c331704f74/trunk%402764
parent 6b5f9a8a
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Showing with 106 additions and 125 deletions
dlib/matrix/matrix_assign.h
View file @ c596cebb
This diff is collapsed.
dlib/matrix/matrix_assign_fwd.h
View file @ c596cebb
......@@ -44,6 +44,12 @@ namespace dlib
EXP1& dest,
const EXP2& src
)
/*!
requires
- src.destructively_aliases(dest) == false
ensures
- #dest == src
!*/
{
for (long r = 0; r < src.nr(); ++r)
{
......@@ -54,6 +60,83 @@ namespace dlib
}
}
// ----------------------------------------------------------------------------------------
template <typename EXP1, typename EXP2>
inline static void matrix_assign_default (
EXP1& dest,
const EXP2& src,
typename EXP2::type alpha,
bool add_to
)
/*!
requires
- src.destructively_aliases(dest) == false
ensures
- if (add_to == false) then
- #dest == alpha*src
- else
- #dest == dest + alpha*src
!*/
{
if (add_to)
{
if (alpha == 1)
{
for (long r = 0; r < src.nr(); ++r)
{
for (long c = 0; c < src.nc(); ++c)
{
dest(r,c) += src(r,c);
}
}
}
else if (alpha == -1)
{
for (long r = 0; r < src.nr(); ++r)
{
for (long c = 0; c < src.nc(); ++c)
{
dest(r,c) -= src(r,c);
}
}
}
else
{
for (long r = 0; r < src.nr(); ++r)
{
for (long c = 0; c < src.nc(); ++c)
{
dest(r,c) += alpha*src(r,c);
}
}
}
}
else
{
if (alpha == 1)
{
for (long r = 0; r < src.nr(); ++r)
{
for (long c = 0; c < src.nc(); ++c)
{
dest(r,c) = src(r,c);
}
}
}
else
{
for (long r = 0; r < src.nr(); ++r)
{
for (long c = 0; c < src.nc(); ++c)
{
dest(r,c) = alpha*src(r,c);
}
}
}
}
}
// ----------------------------------------------------------------------------------------
template <
......@@ -83,7 +166,6 @@ namespace dlib
- src.destructively_aliases(dest) == false
ensures
- #dest == src
- the part of dest outside the above sub matrix remains unchanged
!*/
{
// Call src.ref() here so that the derived type of the matrix_exp shows
......@@ -107,7 +189,6 @@ namespace dlib
- src.destructively_aliases(dest) == false
ensures
- #dest == src
- the part of dest outside the above sub matrix remains unchanged
!*/
{
matrix_assign_default(dest,src.ref());
......
dlib/matrix/matrix_blas_bindings.h
View file @ c596cebb
......@@ -9,6 +9,8 @@
#include "cblas.h"
#endif
#include <iostream>
namespace dlib
{
......@@ -219,45 +221,18 @@ namespace dlib
const int M = static_cast<int>(src.nr());
const int N = static_cast<int>(src.nc());
const int K = static_cast<int>(src.lhs.nc());
const T alpha = 1;
const T* A = &src.lhs(0,0);
const int lda = src.lhs.nc();
const T* B = &src.rhs(0,0);
const int ldb = src.rhs.nc();
const T beta = 0;
const T beta = add_to?1:0;
T* C = &dest(0,0);
const int ldc = src.nc();
cblas_gemm(Order, TransA, TransB, M, N, K, alpha, A, lda, B, ldb, beta, C, ldc);
} DLIB_END_BLAS_BINDING
DLIB_ADD_BLAS_BINDING(row_major_layout,rm + rm*rm)
{
if (&src.lhs != &dest)
{
dest = src.lhs;
}
const CBLAS_ORDER Order = CblasRowMajor;
const CBLAS_TRANSPOSE TransA = CblasNoTrans;
const CBLAS_TRANSPOSE TransB = CblasNoTrans;
const int M = static_cast<int>(src.rhs.nr());
const int N = static_cast<int>(src.rhs.nc());
const int K = static_cast<int>(src.rhs.lhs.nc());
const T alpha = 1;
const T* A = &src.rhs.lhs(0,0);
const int lda = src.rhs.lhs.nc();
const T* B = &src.rhs.rhs(0,0);
const int ldb = src.rhs.rhs.nc();
const T beta = 1;
T* C = &dest(0,0);
const int ldc = src.rhs.nc();
cblas_gemm(Order, TransA, TransB, M, N, K, alpha, A, lda, B, ldb, beta, C, ldc);
} DLIB_END_BLAS_BINDING
// --------------------------------------
DLIB_ADD_BLAS_BINDING(row_major_layout, trans(rm)*rm)
......@@ -268,94 +243,18 @@ namespace dlib
const int M = static_cast<int>(src.nr());
const int N = static_cast<int>(src.nc());
const int K = static_cast<int>(src.lhs.nc());
const T alpha = 1;
const T* A = &src.lhs.m(0,0);
const int lda = src.lhs.m.nc();
const T* B = &src.rhs(0,0);
const int ldb = src.rhs.nc();
const T beta = 0;
const T beta = add_to?1:0;
T* C = &dest(0,0);
const int ldc = src.nc();
cblas_gemm(Order, TransA, TransB, M, N, K, alpha, A, lda, B, ldb, beta, C, ldc);
} DLIB_END_BLAS_BINDING
DLIB_ADD_BLAS_BINDING(row_major_layout, rm + s*trans(rm)*rm)
{
if (&src.lhs != &dest)
{
dest = src.lhs;
}
const CBLAS_ORDER Order = CblasRowMajor;
const CBLAS_TRANSPOSE TransA = CblasTrans;
const CBLAS_TRANSPOSE TransB = CblasNoTrans;
const int M = static_cast<int>(src.rhs.m.nr());
const int N = static_cast<int>(src.rhs.m.nc());
const int K = static_cast<int>(src.rhs.m.lhs.nc());
const T alpha = src.rhs.s;
const T* A = &src.rhs.m.lhs.m(0,0);
const int lda = src.rhs.m.lhs.m.nc();
const T* B = &src.rhs.m.rhs(0,0);
const int ldb = src.rhs.m.rhs.nc();
const T beta = 1;
T* C = &dest(0,0);
const int ldc = dest.nc();
cblas_gemm(Order, TransA, TransB, M, N, K, alpha, A, lda, B, ldb, beta, C, ldc);
} DLIB_END_BLAS_BINDING
DLIB_ADD_BLAS_BINDING(row_major_layout, s*trans(rm)*rm)
{
const CBLAS_ORDER Order = CblasRowMajor;
const CBLAS_TRANSPOSE TransA = CblasTrans;
const CBLAS_TRANSPOSE TransB = CblasNoTrans;
const int M = static_cast<int>(src.m.nr());
const int N = static_cast<int>(src.m.nc());
const int K = static_cast<int>(src.m.lhs.nc());
const T alpha = src.s;
const T* A = &src.m.lhs.m(0,0);
const int lda = src.m.lhs.m.nc();
const T* B = &src.m.rhs(0,0);
const int ldb = src.m.rhs.nc();
const T beta = 0;
T* C = &dest(0,0);
const int ldc = dest.nc();
cblas_gemm(Order, TransA, TransB, M, N, K, alpha, A, lda, B, ldb, beta, C, ldc);
} DLIB_END_BLAS_BINDING
DLIB_ADD_BLAS_BINDING(row_major_layout, rm + trans(rm)*rm)
{
if (&src.lhs != &dest)
{
dest = src.lhs;
}
const CBLAS_ORDER Order = CblasRowMajor;
const CBLAS_TRANSPOSE TransA = CblasTrans;
const CBLAS_TRANSPOSE TransB = CblasNoTrans;
const int M = static_cast<int>(src.rhs.nr());
const int N = static_cast<int>(src.rhs.nc());
const int K = static_cast<int>(src.rhs.lhs.nc());
const T alpha = 1;
const T* A = &src.rhs.lhs.m(0,0);
const int lda = src.rhs.lhs.m.nc();
const T* B = &src.rhs.rhs(0,0);
const int ldb = src.rhs.rhs.nc();
const T beta = 1;
T* C = &dest(0,0);
const int ldc = src.nc();
cblas_gemm(Order, TransA, TransB, M, N, K, alpha, A, lda, B, ldb, beta, C, ldc);
} DLIB_END_BLAS_BINDING
#endif // DLIB_USE_BLAS
}
......
dlib/matrix/matrix_default_mul.h
View file @ c596cebb
......@@ -23,24 +23,25 @@ namespace dlib
// ------------------------------------------------------------------------------------
template <
typename matrix_dest_type,
typename EXP1,
typename EXP2
>
typename enable_if_c<ma::matrix_is_vector<EXP1>::value == true && ma::matrix_is_vector<EXP2>::value == true>::type
default_matrix_multiply (
matrix_dest_type& dest,
const EXP1& lhs,
const EXP2& rhs
);
/*!
requires
- (lhs*rhs).destructively_aliases(dest) == false
- dest.nr() == (lhs*rhs).nr()
- dest.nc() == (lhs*rhs).nc()
ensures
- #dest == dest + lhs*rhs
/*! This file defines the default_matrix_multiply() function. It is a function
that conforms to the following definition:
template <
typename matrix_dest_type,
typename EXP1,
typename EXP2
>
void default_matrix_multiply (
matrix_dest_type& dest,
const EXP1& lhs,
const EXP2& rhs
);
requires
- (lhs*rhs).destructively_aliases(dest) == false
- dest.nr() == (lhs*rhs).nr()
- dest.nc() == (lhs*rhs).nc()
ensures
- #dest == dest + lhs*rhs
!*/
// ------------------------------------------------------------------------------------
......
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