DZSUM1
November 2006
Purpose
DZSUM1 takes the sum of the absolute values of a complex
vector and returns a double precision result.
Based on DZASUM from the Level 1 BLAS.
The change is to use the 'genuine' absolute value.
Contributed by Nick Higham for use with ZLACON.
vector and returns a double precision result.
Based on DZASUM from the Level 1 BLAS.
The change is to use the 'genuine' absolute value.
Contributed by Nick Higham for use with ZLACON.
Arguments
| N |
(input) INTEGER
The number of elements in the vector CX.
|
| CX |
(input) COMPLEX*16 array, dimension (N)
The vector whose elements will be summed.
|
| INCX |
(input) INTEGER
The spacing between successive values of CX. INCX > 0.
|