DenseMat.cpp File Reference

Dense matrix-vector operations. More...

#include "DenseMat.hpp"

Go to the source code of this file.

Functions
void	MinEigenSY (const int &N, float *A, float *w, float *work, const int &lwork)
	Calculate the minimal eigenvalue for sysmetric matrix with mkl lapack.
void	Dcopy (const int &N, double *dst, const double *src)
	Calculate the minimal eigenvalue for sysmetric matrix with mkl lapack. More...
double	Ddot (int n, double *a, double *b)
	Dot product of two double vectors stored as pointers.
double	Dnorm1 (const int &N, double *x)
	Computes the L1-norm of a vector.
double	Dnorm2 (const int &N, double *x)
	Computes the L2-norm of a vector.
void	Dscalar (const int &n, const double &alpha, double *x)
	Scales a vector by a constant.
void	Daxpy (const int &n, const double &alpha, const double *x, double *y)
	Constant times a vector plus a vector.
void	DaABpbC (const int &m, const int &n, const int &k, const double &alpha, const double *A, const double *B, const double &beta, double *C)
	Computes C' = alpha B'A' + beta C', all matrices are column-major.
void	myDABpC (const int &m, const int &n, const int &k, const double *A, const double *B, double *C)
void	myDABpCp (const int &m, const int &n, const int &k, const double *A, const double *B, double *C, const int *flag, const int N)
void	myDABpCp1 (const int &m, const int &n, const int &k, const double *A, const double *B, double *C, const int *flag, const int N)
void	myDABpCp2 (const int &m, const int &n, const int &k, const double *A, const double *B, double *C, const int *flag, const int N)
void	DaAxpby (const int &m, const int &n, const double &a, const double *A, const double *x, const double &b, double *y)
	Computes y = a A x + b y.
void	LUSolve (const int &nrhs, const int &N, double *A, double *b, int *pivot)
	Calls dgesv to solve the linear system for general matrices.
void	SYSSolve (const int &nrhs, const char *uplo, const int &N, double *A, double *b, int *pivot, double *work, const int &lwork)
	Calls dsysy to solve the linear system for symm matrices.

Detailed Description

Dense matrix-vector operations.

Author

Shizhe Li

Date

Oct/21/2021

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Copyright (C) 2021–present by the OpenCAEPoro team. All rights reserved.

Released under the terms of the GNU Lesser General Public License 3.0 or later.

Definition in file DenseMat.cpp.

Function Documentation

Dcopy()

void Dcopy	(	const int &	N,
		double *	dst,
		const double *	src
	)

Calculate the minimal eigenvalue for sysmetric matrix with mkl lapack.

Copy a double vector from src to dst.

Definition at line 37 of file DenseMat.cpp.

{
    const int incx = 1, incy = 1;
    dcopy_(&N, src, &incx, dst, &incy);
}

References dcopy_().