Go to the source code of this file.
subroutine saxpy |
( |
integer |
N, |
|
|
real |
SA, |
|
|
real, dimension(*) |
SX, |
|
|
integer |
INCX, |
|
|
real, dimension(*) |
SY, |
|
|
integer |
INCY |
|
) |
| |
SAXPY
- Purpose:
SAXPY constant times a vector plus a vector.
uses unrolled loops for increments equal to one.
- Author
- Univ. of Tennessee
-
Univ. of California Berkeley
-
Univ. of Colorado Denver
-
NAG Ltd.
- Date
- November 2011
- Further Details:
jack dongarra, linpack, 3/11/78.
modified 12/3/93, array(1) declarations changed to array(*)
Definition at line 54 of file saxpy.f.
78 IF (incx.EQ.1 .AND. incy.EQ.1)
THEN
88 sy(i) = sy(i) + sa*sx(i)
94 sy(i) = sy(i) + sa*sx(i)
95 sy(i+1) = sy(i+1) + sa*sx(i+1)
96 sy(i+2) = sy(i+2) + sa*sx(i+2)
97 sy(i+3) = sy(i+3) + sa*sx(i+3)
106 IF (incx.LT.0) ix = (-n+1)*incx + 1
107 IF (incy.LT.0) iy = (-n+1)*incy + 1
109 sy(iy) = sy(iy) + sa*sx(ix)