dzsum1 (l) - Linux Manuals
dzsum1: takes the sum of the absolute values of a complex vector and returns a double precision result
NAME
DZSUM1 - takes the sum of the absolute values of a complex vector and returns a double precision resultSYNOPSIS
- DOUBLE PRECISION
- FUNCTION DZSUM1( N, CX, INCX )
- INTEGER INCX, N
- COMPLEX*16 CX( * )
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 aqgenuineaq 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.