rocblas_rot_ex Interface Reference#
hipfort_rocblas::rocblas_rot_ex Interface Reference
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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
\details
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 |
------------------------------------------------
@param[in]
handle [rocblas_handle]
handle to the rocblas library context queue.
@param[in]
n [rocblas_int]
number of elements in the x and y vectors.
@param[inout]
x device pointer storing vector x.
@param[in]
x_type [rocblas_datatype]
specifies the datatype of vector x.
@param[in]
incx [rocblas_int]
specifies the increment between elements of x.
@param[inout]
y device pointer storing vector y.
@param[in]
y_type [rocblas_datatype]
specifies the datatype of vector y.
@param[in]
incy [rocblas_int]
specifies the increment between elements of y.
@param[in]
c device pointer or host pointer storing scalar cosine component of the rotation matrix.
@param[in]
s device pointer or host pointer storing scalar sine component of the rotation matrix.
@param[in]
cs_type [rocblas_datatype]
specifies the datatype of c and s.
@param[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: