rocblas_rot_ex Interface Reference#
hipfort_rocblas::rocblas_rot_ex Interface Reference
BLAS EX API. More...
Public Member Functions | |
| integer(kind(rocblas_status_success)) function | rocblas_rot_ex_ (handle, n, x, x_type, incx, y, y_type, incy, c, s, cs_type, execution_type) |
Detailed Description
BLAS EX API.
rot_ex applies the Givens rotation matrix defined by c=cos(alpha) and s=sin(alpha) to vectors x and y. Scalars c and s may be stored in either host or device memory, location is specified by calling rocblas_set_pointer_mode.
In the case where cs_type is real: x := c * x + s * y y := c * y - s * x
In the case where cs_type is complex, the imaginary part of c is ignored: x := real(c) * x + s * y y := real(c) * y - conj(s) * x
Currently supported datatypes are as follows:
| x_type | y_type | cs_type | execution_type |
|---|---|---|---|
| bf16_r | bf16_r | bf16_r | f32_r |
| f16_r | f16_r | f16_r | f32_r |
| f32_r | f32_r | f32_r | f32_r |
| f64_r | f64_r | f64_r | f64_r |
| f32_c | f32_c | f32_c | f32_c |
| f32_c | f32_c | f32_r | f32_c |
| f64_c | f64_c | f64_c | f64_c |
| f64_c | f64_c | f64_r | f64_c |
- Parameters
-
[in] handle [rocblas_handle] handle to the rocblas library context queue. [in] n [rocblas_int] number of elements in the x and y vectors. [in,out] x device pointer storing vector x. [in] x_type [rocblas_datatype] specifies the datatype of vector x. [in] incx [rocblas_int] specifies the increment between elements of x. [in,out] y device pointer storing vector y. [in] y_type [rocblas_datatype] specifies the datatype of vector y. [in] incy [rocblas_int] specifies the increment between elements of y. [in] c device pointer or host pointer storing scalar cosine component of the rotation matrix. [in] s device pointer or host pointer storing scalar sine component of the rotation matrix. [in] cs_type [rocblas_datatype] specifies the datatype of c and s. [in] execution_type [rocblas_datatype] specifies the datatype of computation.
Member Function/Subroutine Documentation
◆ rocblas_rot_ex_()
| integer(kind(rocblas_status_success)) function hipfort_rocblas::rocblas_rot_ex::rocblas_rot_ex_ | ( | type(c_ptr), value | handle, |
| integer(c_int), value | n, | ||
| type(c_ptr), value | x, | ||
| integer(kind(rocblas_datatype_f16_r)), value | x_type, | ||
| integer(c_int), value | incx, | ||
| type(c_ptr), value | y, | ||
| integer(kind(rocblas_datatype_f16_r)), value | y_type, | ||
| integer(c_int), value | incy, | ||
| type(c_ptr), value | c, | ||
| type(c_ptr), value | s, | ||
| integer(kind(rocblas_datatype_f16_r)), value | cs_type, | ||
| integer(kind(rocblas_datatype_f16_r)), value | execution_type | ||
| ) |
The documentation for this interface was generated from the following file: