Forms the 1-norm of the complex vector using the true absolute value.
res = scsum1( n, cx, incx )
res = dzsum1( n, cx, incx )
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.
INTEGER. Specifies the number of elements in the vector cx.
COMPLEX for scsum1
DOUBLE COMPLEX for dzsum1
Array, size at least (1+(n-1)*abs(incx)).
Contains the input vector whose elements will be summed.
INTEGER. Specifies the spacing between successive elements of cx (incx > 0).
REAL for scsum1
DOUBLE PRECISION for dzsum1
Sum of absolute values.