BLAS 1::rotg

KokkosBlas::rotg()

Header File: KokkosBlas1_rotg.hpp

Usage: KokkosBlas::rotg(space, a, b, c, s); KokkosBlas::rotg(a, b, c, s);

Computes the Givens rotation coefficients c and s such that vector (a, b) once rotated becomes (r, 0)

Interface

template <class execution_space, class SViewType, class MViewType>
void rotg(execution_space const& space, SViewType const& a, SViewType const& b,
          MViewType const& c, SViewType const& s)

Template parameters:

• execution_space: the backend that will be used to run this kernel
• SViewType: the type of the input views a, b and s
• MViewType: the type of the input view c

Parameters:

• space: the execution space instance passed to the Kokkos execution policy to run the kernel on
• a: On input, the first entry of vector (a, b), on output the value r
• b: On input, the second entry of vector (a, b)
• c: cosine of the rotation matrix
• s: sine of the rotation matrix

Example