---
name: "scsum1"
section: "3lapack"
platform: "linux"
package: "liblapack-doc"
version: "3.2.1-8"
release: "Debian 6.0 (Squeeze)"
platforms: ["linux"]
url: "https://new.carta.tech/scsum1/3lapack"
---

# scsum1(3lapack)

takes the sum of the absolute values of a complex vector and returns a single precision result

## NAME

SCSUM1 - takes the sum of the absolute values of a complex vector and returns a single precision result

## SYNOPSIS

- REAL FUNCTION

  SCSUM1( N, CX, INCX )

- INTEGER

  INCX, N

- COMPLEX

  CX( \* )

## PURPOSE

SCSUM1 takes the sum of the absolute values of a complex vector and returns a single precision result. Based on SCASUM from the Level 1 BLAS.\
 The change is to use the 'genuine' absolute value.\
 Contributed by Nick Higham for use with CLACON.\

## ARGUMENTS

- N (input) INTEGER

  The number of elements in the vector CX.

- CX (input) COMPLEX array, dimension (N)

  The vector whose elements will be summed.

- INCX (input) INTEGER

  The spacing between successive values of CX.  INCX \> 0.