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-rw-r--r--blas/level1_impl.h242
1 files changed, 20 insertions, 222 deletions
diff --git a/blas/level1_impl.h b/blas/level1_impl.h
index bc99ddb57..fb68abce0 100644
--- a/blas/level1_impl.h
+++ b/blas/level1_impl.h
@@ -41,209 +41,51 @@ int EIGEN_BLAS_FUNC(axpy)(int *n, RealScalar *palpha, RealScalar *px, int *incx,
return 0;
}
-#if !ISCOMPLEX
-// computes the sum of magnitudes of all vector elements or, for a complex vector x, the sum
-// res = |Rex1| + |Imx1| + |Rex2| + |Imx2| + ... + |Rexn| + |Imxn|, where x is a vector of order n
-RealScalar EIGEN_BLAS_FUNC(asum)(int *n, RealScalar *px, int *incx)
-{
-// std::cerr << "_asum " << *n << " " << *incx << "\n";
-
- Scalar* x = reinterpret_cast<Scalar*>(px);
-
- if(*n<=0) return 0;
-
- if(*incx==1) return vector(x,*n).cwiseAbs().sum();
- else return vector(x,*n,std::abs(*incx)).cwiseAbs().sum();
-}
-#else
-
-struct scalar_norm1_op {
- typedef RealScalar result_type;
- EIGEN_EMPTY_STRUCT_CTOR(scalar_norm1_op)
- inline RealScalar operator() (const Scalar& a) const { return internal::norm1(a); }
-};
-namespace Eigen {
- namespace internal {
- template<> struct functor_traits<scalar_norm1_op >
- {
- enum { Cost = 3 * NumTraits<Scalar>::AddCost, PacketAccess = 0 };
- };
- }
-}
-
-RealScalar EIGEN_CAT(EIGEN_CAT(REAL_SCALAR_SUFFIX,SCALAR_SUFFIX),asum_)(int *n, RealScalar *px, int *incx)
-{
-// std::cerr << "__asum " << *n << " " << *incx << "\n";
-
- Complex* x = reinterpret_cast<Complex*>(px);
-
- if(*n<=0) return 0;
-
- if(*incx==1) return vector(x,*n).unaryExpr<scalar_norm1_op>().sum();
- else return vector(x,*n,std::abs(*incx)).unaryExpr<scalar_norm1_op>().sum();
-}
-#endif
-
int EIGEN_BLAS_FUNC(copy)(int *n, RealScalar *px, int *incx, RealScalar *py, int *incy)
{
-// std::cerr << "_copy " << *n << " " << *incx << " " << *incy << "\n";
-
if(*n<=0) return 0;
Scalar* x = reinterpret_cast<Scalar*>(px);
Scalar* y = reinterpret_cast<Scalar*>(py);
- if(*incx==1 && *incy==1) vector(y,*n) = vector(x,*n);
- else if(*incx>0 && *incy>0) vector(y,*n,*incy) = vector(x,*n,*incx);
- else if(*incx>0 && *incy<0) vector(y,*n,-*incy).reverse() = vector(x,*n,*incx);
- else if(*incx<0 && *incy>0) vector(y,*n,*incy) = vector(x,*n,-*incx).reverse();
- else if(*incx<0 && *incy<0) vector(y,*n,-*incy).reverse() = vector(x,*n,-*incx).reverse();
+ // be carefull, *incx==0 is allowed !!
+ if(*incx==1 && *incy==1)
+ vector(y,*n) = vector(x,*n);
+ else
+ {
+ if(*incx<0) x = x - (*n-1)*(*incx);
+ if(*incy<0) y = y - (*n-1)*(*incy);
+ for(int i=0;i<*n;++i)
+ {
+ *y = *x;
+ x += *incx;
+ y += *incy;
+ }
+ }
return 0;
}
-// computes a vector-vector dot product.
-Scalar EIGEN_BLAS_FUNC(dot)(int *n, RealScalar *px, int *incx, RealScalar *py, int *incy)
-{
-// std::cerr << "_dot " << *n << " " << *incx << " " << *incy << "\n";
-
- if(*n<=0) return 0;
-
- Scalar* x = reinterpret_cast<Scalar*>(px);
- Scalar* y = reinterpret_cast<Scalar*>(py);
-
- if(*incx==1 && *incy==1) return (vector(x,*n).cwiseProduct(vector(y,*n))).sum();
- else if(*incx>0 && *incy>0) return (vector(x,*n,*incx).cwiseProduct(vector(y,*n,*incy))).sum();
- else if(*incx<0 && *incy>0) return (vector(x,*n,-*incx).reverse().cwiseProduct(vector(y,*n,*incy))).sum();
- else if(*incx>0 && *incy<0) return (vector(x,*n,*incx).cwiseProduct(vector(y,*n,-*incy).reverse())).sum();
- else if(*incx<0 && *incy<0) return (vector(x,*n,-*incx).reverse().cwiseProduct(vector(y,*n,-*incy).reverse())).sum();
- else return 0;
-}
-
int EIGEN_CAT(EIGEN_CAT(i,SCALAR_SUFFIX),amax_)(int *n, RealScalar *px, int *incx)
{
-// std::cerr << "i_amax " << *n << " " << *incx << "\n";
-
if(*n<=0) return 0;
-
Scalar* x = reinterpret_cast<Scalar*>(px);
DenseIndex ret;
-
if(*incx==1) vector(x,*n).cwiseAbs().maxCoeff(&ret);
else vector(x,*n,std::abs(*incx)).cwiseAbs().maxCoeff(&ret);
-
return ret+1;
}
-
-/*
-
-// computes a vector-vector dot product with extended precision.
-Scalar EIGEN_BLAS_FUNC(sdot)(int *n, RealScalar *px, int *incx, RealScalar *py, int *incy)
-{
- // TODO
- Scalar* x = reinterpret_cast<Scalar*>(px);
- Scalar* y = reinterpret_cast<Scalar*>(py);
-
- if(*incx==1 && *incy==1)
- return vector(x,*n).dot(vector(y,*n));
-
- return vector(x,*n,*incx).dot(vector(y,*n,*incy));
-}
-
-*/
-
-#if ISCOMPLEX
-
-// computes a dot product of a conjugated vector with another vector.
-Scalar EIGEN_BLAS_FUNC(dotc)(int *n, RealScalar *px, int *incx, RealScalar *py, int *incy)
+int EIGEN_CAT(EIGEN_CAT(i,SCALAR_SUFFIX),amin_)(int *n, RealScalar *px, int *incx)
{
-// std::cerr << "_dotc " << *n << " " << *incx << " " << *incy << "\n";
-
if(*n<=0) return 0;
-
Scalar* x = reinterpret_cast<Scalar*>(px);
- Scalar* y = reinterpret_cast<Scalar*>(py);
-
- Scalar res;
- if(*incx==1 && *incy==1) res = (vector(x,*n).dot(vector(y,*n)));
- else if(*incx>0 && *incy>0) res = (vector(x,*n,*incx).dot(vector(y,*n,*incy)));
- else if(*incx<0 && *incy>0) res = (vector(x,*n,-*incx).reverse().dot(vector(y,*n,*incy)));
- else if(*incx>0 && *incy<0) res = (vector(x,*n,*incx).dot(vector(y,*n,-*incy).reverse()));
- else if(*incx<0 && *incy<0) res = (vector(x,*n,-*incx).reverse().dot(vector(y,*n,-*incy).reverse()));
- return res;
-}
-
-// computes a vector-vector dot product without complex conjugation.
-Scalar EIGEN_BLAS_FUNC(dotu)(int *n, RealScalar *px, int *incx, RealScalar *py, int *incy)
-{
-// std::cerr << "_dotu " << *n << " " << *incx << " " << *incy << "\n";
-
- if(*n<=0) return 0;
-
- Scalar* x = reinterpret_cast<Scalar*>(px);
- Scalar* y = reinterpret_cast<Scalar*>(py);
- Scalar res;
- if(*incx==1 && *incy==1) res = (vector(x,*n).cwiseProduct(vector(y,*n))).sum();
- else if(*incx>0 && *incy>0) res = (vector(x,*n,*incx).cwiseProduct(vector(y,*n,*incy))).sum();
- else if(*incx<0 && *incy>0) res = (vector(x,*n,-*incx).reverse().cwiseProduct(vector(y,*n,*incy))).sum();
- else if(*incx>0 && *incy<0) res = (vector(x,*n,*incx).cwiseProduct(vector(y,*n,-*incy).reverse())).sum();
- else if(*incx<0 && *incy<0) res = (vector(x,*n,-*incx).reverse().cwiseProduct(vector(y,*n,-*incy).reverse())).sum();
- return res;
-}
-
-#endif // ISCOMPLEX
-
-#if !ISCOMPLEX
-// computes the Euclidean norm of a vector.
-Scalar EIGEN_BLAS_FUNC(nrm2)(int *n, RealScalar *px, int *incx)
-{
-// std::cerr << "_nrm2 " << *n << " " << *incx << "\n";
- if(*n<=0) return 0;
-
- Scalar* x = reinterpret_cast<Scalar*>(px);
-
- if(*incx==1) return vector(x,*n).norm();
- else return vector(x,*n,std::abs(*incx)).norm();
-}
-#else
-RealScalar EIGEN_CAT(EIGEN_CAT(REAL_SCALAR_SUFFIX,SCALAR_SUFFIX),nrm2_)(int *n, RealScalar *px, int *incx)
-{
-// std::cerr << "__nrm2 " << *n << " " << *incx << "\n";
- if(*n<=0) return 0;
-
- Scalar* x = reinterpret_cast<Scalar*>(px);
-
- if(*incx==1)
- return vector(x,*n).norm();
-
- return vector(x,*n,*incx).norm();
-}
-#endif
-
-int EIGEN_BLAS_FUNC(rot)(int *n, RealScalar *px, int *incx, RealScalar *py, int *incy, RealScalar *pc, RealScalar *ps)
-{
-// std::cerr << "_rot " << *n << " " << *incx << " " << *incy << "\n";
- if(*n<=0) return 0;
-
- Scalar* x = reinterpret_cast<Scalar*>(px);
- Scalar* y = reinterpret_cast<Scalar*>(py);
- Scalar c = *reinterpret_cast<Scalar*>(pc);
- Scalar s = *reinterpret_cast<Scalar*>(ps);
-
- StridedVectorType vx(vector(x,*n,std::abs(*incx)));
- StridedVectorType vy(vector(y,*n,std::abs(*incy)));
-
- Reverse<StridedVectorType> rvx(vx);
- Reverse<StridedVectorType> rvy(vy);
-
- if(*incx<0 && *incy>0) internal::apply_rotation_in_the_plane(rvx, vy, JacobiRotation<Scalar>(c,s));
- else if(*incx>0 && *incy<0) internal::apply_rotation_in_the_plane(vx, rvy, JacobiRotation<Scalar>(c,s));
- else internal::apply_rotation_in_the_plane(vx, vy, JacobiRotation<Scalar>(c,s));
-
-
- return 0;
+
+ DenseIndex ret;
+ if(*incx==1) vector(x,*n).cwiseAbs().minCoeff(&ret);
+ else vector(x,*n,std::abs(*incx)).cwiseAbs().minCoeff(&ret);
+ return ret+1;
}
int EIGEN_BLAS_FUNC(rotg)(RealScalar *pa, RealScalar *pb, RealScalar *pc, RealScalar *ps)
@@ -306,29 +148,6 @@ int EIGEN_BLAS_FUNC(rotg)(RealScalar *pa, RealScalar *pb, RealScalar *pc, RealSc
return 0;
}
-#if !ISCOMPLEX
-/*
-// performs rotation of points in the modified plane.
-int EIGEN_BLAS_FUNC(rotm)(int *n, RealScalar *px, int *incx, RealScalar *py, int *incy, RealScalar *param)
-{
- Scalar* x = reinterpret_cast<Scalar*>(px);
- Scalar* y = reinterpret_cast<Scalar*>(py);
-
- // TODO
-
- return 0;
-}
-
-// computes the modified parameters for a Givens rotation.
-int EIGEN_BLAS_FUNC(rotmg)(RealScalar *d1, RealScalar *d2, RealScalar *x1, RealScalar *x2, RealScalar *param)
-{
- // TODO
-
- return 0;
-}
-*/
-#endif // !ISCOMPLEX
-
int EIGEN_BLAS_FUNC(scal)(int *n, RealScalar *palpha, RealScalar *px, int *incx)
{
if(*n<=0) return 0;
@@ -336,35 +155,14 @@ int EIGEN_BLAS_FUNC(scal)(int *n, RealScalar *palpha, RealScalar *px, int *incx)
Scalar* x = reinterpret_cast<Scalar*>(px);
Scalar alpha = *reinterpret_cast<Scalar*>(palpha);
-// std::cerr << "_scal " << *n << " " << alpha << " " << *incx << "\n";
-
- if(*incx==1) vector(x,*n) *= alpha;
- else vector(x,*n,std::abs(*incx)) *= alpha;
-
- return 0;
-}
-
-#if ISCOMPLEX
-int EIGEN_CAT(EIGEN_CAT(SCALAR_SUFFIX,REAL_SCALAR_SUFFIX),scal_)(int *n, RealScalar *palpha, RealScalar *px, int *incx)
-{
- if(*n<=0) return 0;
-
- Scalar* x = reinterpret_cast<Scalar*>(px);
- RealScalar alpha = *palpha;
-
-// std::cerr << "__scal " << *n << " " << alpha << " " << *incx << "\n";
-
if(*incx==1) vector(x,*n) *= alpha;
else vector(x,*n,std::abs(*incx)) *= alpha;
return 0;
}
-#endif // ISCOMPLEX
int EIGEN_BLAS_FUNC(swap)(int *n, RealScalar *px, int *incx, RealScalar *py, int *incy)
{
-// std::cerr << "_swap " << *n << " " << *incx << " " << *incy << "\n";
-
if(*n<=0) return 0;
Scalar* x = reinterpret_cast<Scalar*>(px);
generated by cgit v1.2.3 (git 2.39.1) at 2024-05-23 12:07:37 +0000