rocblas_drotmg Interface Reference#
hipfort_rocblas::rocblas_drotmg Interface Reference
BLAS Level 1 API. More...
Public Member Functions | |
| integer(kind(rocblas_status_success)) function | rocblas_drotmg_ (handle, d1, d2, x1, y1, param) |
Detailed Description
BLAS Level 1 API.
rotmg creates the modified Givens rotation matrix for the vector (d1 * x1, d2 * y1). Parameters may be stored in either host or device memory, location is specified by calling rocblas_set_pointer_mode. If the pointer mode is set to rocblas_pointer_mode_host, this function blocks the CPU until the GPU has finished and the results are available in host memory. If the pointer mode is set to rocblas_pointer_mode_device, this function returns immediately and synchronization is required to read the results.
- Parameters
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[in] handle [rocblas_handle] handle to the rocblas library context queue. [in,out] d1 device pointer or host pointer to input scalar that is overwritten. [in,out] d2 device pointer or host pointer to input scalar that is overwritten. [in,out] x1 device pointer or host pointer to input scalar that is overwritten. [in] y1 device pointer or host pointer to input scalar. [out] param device vector or host vector of 5 elements defining the rotation. param[0] = flag param[1] = H11 param[2] = H21 param[3] = H12 param[4] = H22 The flag parameter defines the form of H: flag = -1 => H = ( H11 H12 H21 H22 ) flag = 0 => H = ( 1.0 H12 H21 1.0 ) flag = 1 => H = ( H11 1.0 -1.0 H22 ) flag = -2 => H = ( 1.0 0.0 0.0 1.0 ) param may be stored in either host or device memory, location is specified by calling rocblas_set_pointer_mode.
Member Function/Subroutine Documentation
◆ rocblas_drotmg_()
| integer(kind(rocblas_status_success)) function hipfort_rocblas::rocblas_drotmg::rocblas_drotmg_ | ( | type(c_ptr), value | handle, |
| type(c_ptr), value | d1, | ||
| type(c_ptr), value | d2, | ||
| type(c_ptr), value | x1, | ||
| type(c_ptr), value | y1, | ||
| type(c_ptr), value | param | ||
| ) |
The documentation for this interface was generated from the following file: