rocblas_drotmg Interface Reference#
hipfort_rocblas::rocblas_drotmg Interface Reference
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Public Member Functions | |
| integer(kind(rocblas_status_success)) function | rocblas_drotmg_ (handle, d1, d2, x1, y1, param) |
Detailed Description
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BLAS Level 1 API
\details
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.
@param[in]
handle [rocblas_handle]
handle to the rocblas library context queue.
@param[inout]
d1 device pointer or host pointer to input scalar that is overwritten.
@param[inout]
d2 device pointer or host pointer to input scalar that is overwritten.
@param[inout]
x1 device pointer or host pointer to input scalar that is overwritten.
@param[in]
y1 device pointer or host pointer to input scalar.
@param[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: