Developer Reference for Intel® oneAPI Math Kernel Library - C

Developer Reference

  • 2021.1
  • 12/04/2020
  • Public Content
Contents

cblas_?dotu

Computes a vector-vector dot product.

Syntax

void
cblas_cdotu_sub
(
const
MKL_INT
n
,
const
void
*x
,
const
MKL_INT
incx
,
const
void
*y
,
const
MKL_INT
incy
,
void
*dotu
);
void
cblas_zdotu_sub
(
const
MKL_INT
n
,
const
void
*x
,
const
MKL_INT
incx
,
const
void
*y
,
const
MKL_INT
incy
,
void
*dotu
);
Include Files
  • mkl.h
Description
The
?dotu
 routines perform a vector-vector reduction operation defined as
Equation
where
x
i
 and
y
i
 are elements of complex vectors
x
 and
y
.
Input Parameters
n
Specifies the number of elements in vectors
x
 and
y
.
x
Array, size at least
(1 + (
n
 -1)*abs(
incx
))
.
incx
Specifies the increment for the elements of
x
.
y
Array, size at least
(1 + (
n
 -1)*abs(
incy
))
.
incy
Specifies the increment for the elements of
y
.
Output Parameters
dotu
Contains the result of the dot product of
x
 and
y
, if
n
 is positive. Otherwise, it contains
0
.

Product and Performance Information

1

Performance varies by use, configuration and other factors. Learn more at www.Intel.com/PerformanceIndex.