sscal
sscal - Compute y := alpha * y
SUBROUTINE SSCAL( N, ALPHA, Y, INCY)
INTEGER N, INCY
REAL ALPHA
REAL Y(*)
SUBROUTINE SSCAL_64( N, ALPHA, Y, INCY)
INTEGER*8 N, INCY
REAL ALPHA
REAL Y(*)
SUBROUTINE SCAL( [N], ALPHA, Y, [INCY])
INTEGER :: N, INCY
REAL :: ALPHA
REAL, DIMENSION(:) :: Y
SUBROUTINE SCAL_64( [N], ALPHA, Y, [INCY])
INTEGER(8) :: N, INCY
REAL :: ALPHA
REAL, DIMENSION(:) :: Y
#include <sunperf.h>
void sscal(int n, float alpha, float *y, int incy);
void sscal_64(long n, float alpha, float *y, long incy);
sscal Compute y := alpha * y where alpha is a scalar and y is an n-vector.
-
* 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.
-
* ALPHA (input)
-
On entry, ALPHA specifies the scalar alpha.
Unchanged on exit.
-
* Y (input/output)
-
( 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.
-
* INCY (input)
-
On entry, INCY specifies the increment for the elements of
Y. INCY must not be zero.
Unchanged on exit.