aclblasHgemv

Applicable Products

Product	Supported
Ascend 950PR / Ascend 950DT	×
Atlas A3 training products / Atlas A3 inference products	√
Atlas A2 training products / Atlas A2 inference products	√
Atlas 200I/500 A2 inference products	√
Atlas inference products	√
Atlas training products	√

Function Usage

Computes matrix-vector multiplication: y = αAx + βy. The inputs and outputs are all of data type FLOAT16. This API is asynchronous.

Prototype

      
           aclError aclblasHgemv(aclTransType transA,
int m,
int n,
const aclFloat16 *alpha,
const aclFloat16 *a,
int lda,
const aclFloat16 *x,
int incx,
const aclFloat16 *beta,
aclFloat16 *y,
int incy,
aclComputeType type,
aclrtStream stream)

Parameters

Parameter	Input/Output	Description
transA	Input	Transpose flag of matrix A. For details about the type definition, see aclTransType.
m	Input	Number of rows in matrix A (row-major first in data storing).
n	Input	Number of columns in matrix A.
alpha	Input	Pointer to scalar α used for executing the multiplication operation. For the type definition, see aclFloat16.
a	Input	Pointer to matrix A. For the type definition, see aclFloat16.
lda	Input	Leading dimension of matrix A. For row-major transpose, lda is the number of columns of matrix A. This parameter is reserved and can only be set to –1.
x	Input	Pointer to vector x. For the type definition, see aclFloat16.
incx	Input	Increment between successive x elements. This parameter is reserved and can only be set to –1.
beta	Input	Pointer to scalar β used for executing the multiplication operation. For the type definition, see aclFloat16.
y	Input and output	Pointer to vector y. For the type definition, see aclFloat16.
incy	Input	Increment between successive y elements. This parameter is reserved and can only be set to –1.
type	Input	Computation precision type (high precision by default). For details about the type definition, see aclComputeType.
stream	Input	Stream where the operator is executed. For the type definition, see aclrtStream.

Returns

0 on success; else, failure. For details, see aclError.

Parent topic: CBLAS APIs