# scsum1(3) [centos man page]

```scsum1.f(3)							      LAPACK							       scsum1.f(3)

NAME
scsum1.f -

SYNOPSIS
Functions/Subroutines
REAL function scsum1 (N, CX, INCX)
SCSUM1 forms the 1-norm of the complex vector using the true absolute value.

Function/Subroutine Documentation
REAL function scsum1 (integerN, complex, dimension( * )CX, integerINCX)
SCSUM1 forms the 1-norm of the complex vector using the true absolute value.

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.

Parameters:
N

N is INTEGER
The number of elements in the vector CX.

CX

CX is COMPLEX array, dimension (N)
The vector whose elements will be summed.

INCX

INCX is INTEGER
The spacing between successive values of CX.  INCX > 0.

Author:
Univ. of Tennessee

Univ. of California Berkeley

NAG Ltd.

Date:
September 2012

Contributors:
Nick Higham for use with CLACON.

Definition at line 82 of file scsum1.f.

Author
Generated automatically by Doxygen for LAPACK from the source code.

Version 3.4.2							  Tue Sep 25 2012						       scsum1.f(3)```

## Check Out this Related Man Page

```clar2v.f(3)							      LAPACK							       clar2v.f(3)

NAME
clar2v.f -

SYNOPSIS
Functions/Subroutines
subroutine clar2v (N, X, Y, Z, INCX, C, S, INCC)
CLAR2V

Function/Subroutine Documentation
subroutine clar2v (integerN, complex, dimension( * )X, complex, dimension( * )Y, complex, dimension( * )Z, integerINCX, real, dimension( * )C,
complex, dimension( * )S, integerINCC)
CLAR2V

Purpose:

CLAR2V applies a vector of complex plane rotations with real cosines
from both sides to a sequence of 2-by-2 complex Hermitian matrices,
defined by the elements of the vectors x, y and z. For i = 1,2,...,n

(       x(i)  z(i) ) :=
( conjg(z(i)) y(i) )

(  c(i) conjg(s(i)) ) (       x(i)  z(i) ) ( c(i) -conjg(s(i)) )
( -s(i)       c(i)  ) ( conjg(z(i)) y(i) ) ( s(i)	  c(i)	)

Parameters:
N

N is INTEGER
The number of plane rotations to be applied.

X

X is COMPLEX array, dimension (1+(N-1)*INCX)
The vector x; the elements of x are assumed to be real.

Y

Y is COMPLEX array, dimension (1+(N-1)*INCX)
The vector y; the elements of y are assumed to be real.

Z

Z is COMPLEX array, dimension (1+(N-1)*INCX)
The vector z.

INCX

INCX is INTEGER
The increment between elements of X, Y and Z. INCX > 0.

C

C is REAL array, dimension (1+(N-1)*INCC)
The cosines of the plane rotations.

S

S is COMPLEX array, dimension (1+(N-1)*INCC)
The sines of the plane rotations.

INCC

INCC is INTEGER
The increment between elements of C and S. INCC > 0.

Author:
Univ. of Tennessee

Univ. of California Berkeley

NAG Ltd.

Date:
November 2011

Definition at line 112 of file clar2v.f.

Author
Generated automatically by Doxygen for LAPACK from the source code.

Version 3.4.1							  Sun May 26 2013						       clar2v.f(3)```
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