BLAS/SRC/dasum.f(3) Library Functions Manual BLAS/SRC/dasum.f(3)

BLAS/SRC/dasum.f


double precision function dasum (n, dx, incx)
DASUM

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.

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