Computes the parameters for a Givens rotation.
void rotg(queue &exec_queue, buffer<T,1> &a, buffer<T,1> &b, buffer<T_real,1> &c, buffer<T,1> &s);
rotg supports the following precisions and devices.
T | T_real | Devices Supported |
---|---|---|
float | float | Host, CPU, and GPU |
double | double | Host, CPU, and GPU |
std::complex<float> | float | Host, CPU, and GPU |
std::complex<double> | double | Host, CPU, and GPU |
Given the Cartesian coordinates (a, b) of a point, the rotg routines return the parameters c, s, r, and z associated with the Givens rotation. The parameters c and s define a unitary matrix such that:
The parameter z is defined such that if |a| > |b|, z is s; otherwise if c is not 0 z is 1/c; otherwise z is 1.
The queue where the routine should be executed
Buffer holding the x-coordinate of the point.
Buffer holding the y-coordinate of the point.
Buffer holding the parameter r associated with the Givens rotation.
Buffer holding the parameter z associated with the Givens rotation.
Buffer holding the parameter c associated with the Givens rotation.
Buffer holding the parameter s associated with the Givens rotation.