scal¶

Computes the product of a vector by a scalar.

scal supports the following precisions.

T

T_scalar

float

float

double

double

std::complex<float>

std::complex<float>

std::complex<double>

std::complex<double>

std::complex<float>

float

std::complex<double>

double

Description

The scal routines computes a scalar-vector product:

x <- alpha*x

where:

x is a vector of n elements,

alpha is a scalar.

scal (Buffer Version)¶

Syntax

void onemkl::blas::scal(sycl::queue &queue, std::int64_t n, T_scalar alpha, sycl::buffer<T, 1> &x, std::int64_t incx)¶

Input Parameters

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.

scal (USM Version)¶

Syntax

sycl::event onemkl::blas::scal(sycl::queue &queue, std::int64_t n, T_scalar alpha, T *x, std::int64_t incx, const sycl::vector_class<sycl::event> &dependencies = {})¶

Input Parameters

queue: The queue where the routine should be executed.
n: Number of elements in vector x.
alpha: Specifies the scalar alpha.
x: Pointer to the input vector x. The array 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: Pointer to the updated array x.

Return Values

Output event to wait on to ensure computation is complete.

Parent topic: BLAS Level 1 Routines