?sum1
?sum1
Forms the 1-norm of the complex vector using the true
absolute value.
Syntax
float
scsum1
(
const
MKL_INT
*
n
,
const
MKL_Complex8
*
cx
,
const
MKL_INT
*
incx
)
double
dzsum1
(
const
MKL_INT
*
n
,
const
MKL_Complex16
*
cx
,
const
MKL_INT
*
incx
)
Include Files
- mkl.h
Description
Given a complex vector
cx
, scsum1
/dzsum1
functions take the sum of the absolute values of vector elements and
return a single/double precision result, respectively. These
functions are based on scasum
/dzasum
from Level 1 BLAS, but use the true
absolute value and were designed for use with clacon
/zlacon
.Input Parameters
- n
- Specifies the number of elements in the vectorcx.
- cx
- Array, size at least(1+(.n-1)*abs(incx))Contains the input vector whose elements will be summed.
- incx
- Specifies the spacing between successive elements ofcx(incx> 0).
Return Values
Sum of absolute values.