zscal
zscal - Compute y := alpha * y
SUBROUTINE ZSCAL( N, ALPHA, Y, INCY)
DOUBLE COMPLEX ALPHA
DOUBLE COMPLEX Y(*)
INTEGER N, INCY
SUBROUTINE ZSCAL_64( N, ALPHA, Y, INCY)
DOUBLE COMPLEX ALPHA
DOUBLE COMPLEX Y(*)
INTEGER*8 N, INCY
SUBROUTINE SCAL( [N], ALPHA, Y, [INCY])
COMPLEX(8) :: ALPHA
COMPLEX(8), DIMENSION(:) :: Y
INTEGER :: N, INCY
SUBROUTINE SCAL_64( [N], ALPHA, Y, [INCY])
COMPLEX(8) :: ALPHA
COMPLEX(8), DIMENSION(:) :: Y
INTEGER(8) :: N, INCY
#include <sunperf.h>
void zscal(int n, doublecomplex alpha, doublecomplex *y, int incy);
void zscal_64(long n, doublecomplex alpha, doublecomplex *y, long incy);
zscal Compute y := alpha * y where alpha is a scalar and y 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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* ALPHA (input)
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On entry, ALPHA specifies the scalar alpha.
Unchanged on exit.
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* Y (input/output)
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( 1 + ( m - 1 )*abs( INCY ) ).
On entry, the incremented array Y
must contain the vector y. On exit, Y is overwritten by the
updated vector y.
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* INCY (input)
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On entry, INCY specifies the increment for the elements of
Y. INCY must not be zero.
Unchanged on exit.