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

add bench_reverse, draft of a reverse vectorization for AltiVec, make

Browse Source 
global Scaling function static
This commit is contained in:
Gael Guennebaud
2009-02-06 13:28:55 +00:00
parent f5d96df800
commit cc90495e30
3 changed files with 105 additions and 11 deletions
Download Patch File Download Diff File Expand all files Collapse all files

15
Eigen/src/Core/arch/AltiVec/PacketMath.h
View File

@@ -111,7 +111,7 @@ template<> inline v4i ei_pmul(const v4i& a, const v4i& b)
USE_CONST_v1i;
USE_CONST_v16i_;
// Get the absolute values
// Get the absolute values
a1 = vec_abs(a);
b1 = vec_abs(b);
@@ -146,7 +146,7 @@ template<> inline v4f ei_pdiv(const v4f& a, const v4f& b) {
// Altivec does not offer a divide instruction, we have to do a reciprocal approximation
y_0 = vec_re(b);
// Do one Newton-Raphson iteration to get the needed accuracy
t = vec_nmsub(y_0, b, v1f);
y_1 = vec_madd(y_0, t, y_0);
@@ -260,6 +260,17 @@ template<> inline int ei_pfirst(const v4i& a)
return ai[0];
}
template<> EIGEN_STRONG_INLINE v4f ei_preverse(const v4f& a)
{
static const unsigned char __attribute__(aligned(16)) reverse_mask = {12,13,14,15, 8,9,10,11, 4,5,6,7, 0,1,2,3};
return (v4f)vec_perm((__vector unsigned char)a,(__vector unsigned char)a,reverse_mask);
}
template<> EIGEN_STRONG_INLINE v4i ei_preverse(const v4i& a)
{
static const unsigned char __attribute__(aligned(16)) reverse_mask = {12,13,14,15, 8,9,10,11, 4,5,6,7, 0,1,2,3};
return (v4i)vec_perm((__vector unsigned char)a,(__vector unsigned char)a,reverse_mask);
}
inline v4f ei_preduxp(const v4f* vecs)
{
v4f v[4], sum[4];

18
Eigen/src/Geometry/Scaling.h
View File

@@ -120,28 +120,28 @@ public:
};
/** Constructs a uniform scaling from scale factor \a s */
inline UniformScaling<float> Scaling(float s) { return UniformScaling<float>(s); }
static inline UniformScaling<float> Scaling(float s) { return UniformScaling<float>(s); }
/** Constructs a uniform scaling from scale factor \a s */
inline UniformScaling<double> Scaling(double s) { return UniformScaling<double>(s); }
static inline UniformScaling<double> Scaling(double s) { return UniformScaling<double>(s); }
/** Constructs a uniform scaling from scale factor \a s */
template<typename RealScalar> inline UniformScaling<std::complex<RealScalar> >
Scaling(const std::complex<RealScalar>& s)
template<typename RealScalar>
static inline UniformScaling<std::complex<RealScalar> > Scaling(const std::complex<RealScalar>& s)
{ return UniformScaling<std::complex<RealScalar> >(s); }
/** Constructs a 2D axis aligned scaling */
template<typename Scalar> inline DiagonalMatrix<Scalar,2>
Scaling(Scalar sx, Scalar sy)
template<typename Scalar>
static inline DiagonalMatrix<Scalar,2> Scaling(Scalar sx, Scalar sy)
{ return DiagonalMatrix<Scalar,2>(sx, sy); }
/** Constructs a 3D axis aligned scaling */
template<typename Scalar> inline DiagonalMatrix<Scalar,3>
Scaling(Scalar sx, Scalar sy, Scalar sz)
template<typename Scalar>
static inline DiagonalMatrix<Scalar,3> Scaling(Scalar sx, Scalar sy, Scalar sz)
{ return DiagonalMatrix<Scalar,3>(sx, sy, sz); }
/** Constructs an axis aligned scaling expression from vector expression \a coeffs
* This is an alias for coeffs.asDiagonal()
*/
template<typename Derived>
inline const DiagonalMatrixWrapper<Derived> Scaling(const MatrixBase<Derived>& coeffs)
static inline const DiagonalMatrixWrapper<Derived> Scaling(const MatrixBase<Derived>& coeffs)
{ return coeffs.asDiagonal(); }
/** \addtogroup Geometry_Module */