dasum
dasum - Return the sum of the absolute values of a vector x.
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(*)
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
#include <sunperf.h>
double dasum(int n, double *x, int incx);
double dasum_64(long n, double *x, long incx);
dasum Return the sum of the absolute values of x where x is an n-vector.
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* N (input)
-
On entry, N specifies the number of elements in the vector. N must be at least one for the subroutine to have any visible effect. Unchanged on exit.
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* X (input/output)
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( 1 + ( m - 1 )*abs( INCY ) ).
On entry, the incremented array X
must contain the vector x. On exit, X is overwritten by the
updated vector x.
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* INCX (input)
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On entry, INCX specifies the increment for the elements of
X. INCX must not be zero.
Unchanged on exit.