scal¶
Computes the product of a vector by a scalar.
Syntax
-
void
scal(queue &exec_queue, std::int64_t n, T_scalar alpha, buffer<T, 1> &x, std::int64_t incx)¶
scal supports the following precisions and devices.
T |
T_scalar |
Devices Supported |
|---|---|---|
|
|
Host, CPU, and GPU |
|
|
Host, CPU, and GPU |
|
|
Host, CPU, and GPU |
|
|
Host, CPU, and GPU |
|
|
Host, CPU, and GPU |
|
|
Host, CPU, and GPU |
Description
The scal routines computes a scalar-vector product:
x <- alpha*x
where:
x is a vector of n elements,
alpha is a scalar.
Input Parameters
- exec_queue
The queue where the routine should be executed.
- n
Number of elements in vector
x.- alpha
Specifies the scalar
alpha.- x
Buffer holding input vector
x. The buffer must be of size at least (1 + (n- 1)*abs(incx)). See Matrix and Vector Storage for more details.- incx
Stride of vector x.
Output Parameters
- x
Buffer holding updated buffer
x.