![]() |
LAPACK 3.12.0
LAPACK: Linear Algebra PACKage
|
| subroutine daxpy | ( | integer | n, |
| double precision | da, | ||
| double precision, dimension(*) | dx, | ||
| integer | incx, | ||
| double precision, dimension(*) | dy, | ||
| integer | incy | ||
| ) |
DAXPY
DAXPY constant times a vector plus a vector.
uses unrolled loops for increments equal to one. | [in] | N | N is INTEGER
number of elements in input vector(s) |
| [in] | DA | DA is DOUBLE PRECISION
On entry, DA specifies the scalar alpha. |
| [in] | DX | DX is DOUBLE PRECISION array, dimension ( 1 + ( N - 1 )*abs( INCX ) ) |
| [in] | INCX | INCX is INTEGER
storage spacing between elements of DX |
| [in,out] | DY | DY is DOUBLE PRECISION array, dimension ( 1 + ( N - 1 )*abs( INCY ) ) |
| [in] | INCY | INCY is INTEGER
storage spacing between elements of DY |
jack dongarra, linpack, 3/11/78.
modified 12/3/93, array(1) declarations changed to array(*)