Contents

• NAME
• SYNOPSIS
  • F95 INTERFACE
  • C INTERFACE
• PURPOSE
• ARGUMENTS

NAME

     dasum - Return the sum of the absolute values of a vector x.

SYNOPSIS

     DOUBLE PRECISION FUNCTION DASUM(N, X, INCX)

     INTEGER N, INCX
     DOUBLE PRECISION X(*)

     DOUBLE PRECISION FUNCTION DASUM_64(N, X, INCX)

     INTEGER*8 N, INCX
     DOUBLE PRECISION X(*)

  F95 INTERFACE
     REAL(8) FUNCTION ASUM([N], X, [INCX])

     INTEGER :: N, INCX
     REAL(8), DIMENSION(:) :: X

     REAL(8) FUNCTION ASUM_64([N], X, [INCX])

     INTEGER(8) :: N, INCX
     REAL(8), DIMENSION(:) :: X

  C INTERFACE
     #include <sunperf.h>

     double dasum(int n, double *x, int incx);

     double dasum_64(long n, double *x, long incx);

PURPOSE

     dasum Return the sum of the absolute values of x where x  is
     an n-vector.

ARGUMENTS

     N (input)
               On entry, N specifies the number  of  elements  in
               the  vector.   N must be at least one for the sub-
               routine to have any visible effect.  Unchanged  on
               exit.
     X (input)
               ( 1 + ( n - 1 )*abs( INCX  )  ).   On  entry,  the
               incremented  array  X  must  contain the vector x.
               Unchanged on exit.

     INCX (input)
               On entry, INCX specifies  the  increment  for  the
               elements  of X. INCX must not be zero or negative.
               Unchanged on exit.