asum(3)                    Library Functions Manual                    asum(3)

NAME
       asum - asum: sum | real( x_i ) | + | imag( x_i ) |

SYNOPSIS
   Functions
       double precision function dasum (n, dx, incx)
           DASUM
       double precision function dzasum (n, zx, incx)
           DZASUM
       real function sasum (n, sx, incx)
           SASUM
       real function scasum (n, cx, incx)
           SCASUM

Detailed Description
Function Documentation
   double precision function dasum (integer n, double precision, dimension(*)
       dx, integer incx)
       DASUM

       Purpose:


           !>
           !>    DASUM takes the sum of the absolute values.
           !>

       Parameters
           N

           !>          N is INTEGER
           !>         number of elements in input vector(s)
           !>

           DX

           !>          DX is DOUBLE PRECISION array, dimension ( 1 + ( N - 1 )*abs( INCX ) )
           !>

           INCX

           !>          INCX is INTEGER
           !>         storage spacing between elements of DX
           !>

       Author
           Univ. of Tennessee


           Univ. of California Berkeley


           Univ. of Colorado Denver


           NAG Ltd.

       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 70 of file dasum.f.

   double precision function dzasum (integer n, complex*16, dimension(*) zx,
       integer incx)
       DZASUM

       Purpose:


           !>
           !>    DZASUM takes the sum of the (|Re(.)| + |Im(.)|)'s of a complex vector and
           !>    returns a double precision result.
           !>

       Parameters
           N

           !>          N is INTEGER
           !>         number of elements in input vector(s)
           !>

           ZX

           !>          ZX is COMPLEX*16 array, dimension ( 1 + ( N - 1 )*abs( INCX ) )
           !>

           INCX

           !>          INCX is INTEGER
           !>         storage spacing between elements of ZX
           !>

       Author
           Univ. of Tennessee


           Univ. of California Berkeley


           Univ. of Colorado Denver


           NAG Ltd.

       Further Details:


           !>
           !>     jack dongarra, 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 71 of file dzasum.f.

   real function sasum (integer n, real, dimension(*) sx, integer incx)
       SASUM

       Purpose:


           !>
           !>    SASUM takes the sum of the absolute values.
           !>    uses unrolled loops for increment equal to one.
           !>

       Parameters
           N

           !>          N is INTEGER
           !>         number of elements in input vector(s)
           !>

           SX

           !>          SX is REAL array, dimension ( 1 + ( N - 1 )*abs( INCX ) )
           !>

           INCX

           !>          INCX is INTEGER
           !>         storage spacing between elements of SX
           !>

       Author
           Univ. of Tennessee


           Univ. of California Berkeley


           Univ. of Colorado Denver


           NAG Ltd.

       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 71 of file sasum.f.

   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.
           !>

       Parameters
           N

           !>          N is INTEGER
           !>         number of elements in input vector(s)
           !>

           CX

           !>          CX is COMPLEX array, dimension ( 1 + ( N - 1 )*abs( INCX ) )
           !>

           INCX

           !>          INCX is INTEGER
           !>         storage spacing between elements of SX
           !>

       Author
           Univ. of Tennessee


           Univ. of California Berkeley


           Univ. of Colorado Denver


           NAG Ltd.

       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 71 of file scasum.f.

Author
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LAPACK                          Version 3.12.0                         asum(3)