LAPACK  3.6.1 LAPACK: Linear Algebra PACKage
 real function scasum ( integer N, complex, dimension(*) CX, integer INCX )

SCASUM

Purpose:
```    SCASUM takes the sum of the (|Re(.)| + |Im(.)|)'s of a complex vector and
returns a single precision result.```
Date
November 2015
Further Details:
```     jack dongarra, linpack, 3/11/78.
modified 3/93 to return if incx .le. 0.
modified 12/3/93, array(1) declarations changed to array(*)```

Definition at line 54 of file scasum.f.

54 *
55 * -- Reference BLAS level1 routine (version 3.6.0) --
56 * -- Reference BLAS is a software package provided by Univ. of Tennessee, --
57 * -- Univ. of California Berkeley, Univ. of Colorado Denver and NAG Ltd..--
58 * November 2015
59 *
60 * .. Scalar Arguments ..
61  INTEGER incx,n
62 * ..
63 * .. Array Arguments ..
64  COMPLEX cx(*)
65 * ..
66 *
67 * =====================================================================
68 *
69 * .. Local Scalars ..
70  REAL stemp
71  INTEGER i,nincx
72 * ..
73 * .. Intrinsic Functions ..
74  INTRINSIC abs,aimag,real
75 * ..
76  scasum = 0.0e0
77  stemp = 0.0e0
78  IF (n.LE.0 .OR. incx.LE.0) RETURN
79  IF (incx.EQ.1) THEN
80 *
81 * code for increment equal to 1
82 *
83  DO i = 1,n
84  stemp = stemp + abs(REAL(cx(i))) + abs(aimag(cx(i)))
85  END DO
86  ELSE
87 *
88 * code for increment not equal to 1
89 *
90  nincx = n*incx
91  DO i = 1,nincx,incx
92  stemp = stemp + abs(REAL(cx(i))) + abs(aimag(cx(i)))
93  END DO
94  END IF
95  scasum = stemp
96  RETURN
real function scasum(N, CX, INCX)
SCASUM
Definition: scasum.f:54

Here is the caller graph for this function: