rotm: Apply modified (fast) Givens plane rotation

Functions
template<typename TX , typename TY >
void	blas::rotm (int64_t n, TX *x, int64_t incx, TY *y, int64_t incy, blas::scalar_type< TX, TY > const param[5])
	Apply modified (fast) plane rotation, H:
void	blas::rotm (int64_t n, float *x, int64_t incx, float *y, int64_t incy, float const param[5])
void	blas::rotm (int64_t n, double *x, int64_t incx, double *y, int64_t incy, double const param[5])

Detailed Description

Function Documentation

rotm()

template<typename TX , typename TY >

void blas::rotm	(	int64_t	n,
		TX *	x,
		int64_t	incx,
		TY *	y,
		int64_t	incy,
		blas::scalar_type< TX, TY > const	param[5]
	)

Apply modified (fast) plane rotation, H:

\[ \begin{bmatrix} x^T \\ y^T \end{bmatrix} = H \begin{bmatrix} x^T \\ y^T \end{bmatrix}. \]

See also

rotmg to generate the rotation, and for fuller description.

Generic implementation for arbitrary data types.

Parameters

[in]	n	Number of elements in x and y. n >= 0.
[in,out]	x	The n-element vector x, in an array of length (n-1)*abs(incx) + 1.
[in]	incx	Stride between elements of x. incx must not be zero. If incx < 0, uses elements of x in reverse order: x(n-1), ..., x(0).
[in,out]	y	The n-element vector y, in an array of length (n-1)*abs(incy) + 1.
[in]	incy	Stride between elements of y. incy must not be zero. If incy < 0, uses elements of y in reverse order: y(n-1), ..., y(0).
[in]	param	Array of length 5 giving parameters of modified plane rotation.