First commit

1 files changed, 34 insertions, 0 deletions

diff --git a/2.3-1/src/fortran/blas/zaxpy.f b/2.3-1/src/fortran/blas/zaxpy.f
new file mode 100644
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+++ b/2.3-1/src/fortran/blas/zaxpy.f
@@ -0,0 +1,34 @@
+      subroutine zaxpy(n,za,zx,incx,zy,incy)
+c
+c     constant times a vector plus a vector.
+c     jack dongarra, 3/11/78.
+c     modified 12/3/93, array(1) declarations changed to array(*)
+c
+      double complex zx(*),zy(*),za
+      integer i,incx,incy,ix,iy,n
+      double precision dcabs1
+      if(n.le.0)return
+      if (dcabs1(za) .eq. 0.0d0) return
+      if (incx.eq.1.and.incy.eq.1)go to 20
+c
+c        code for unequal increments or equal increments
+c          not equal to 1
+c
+      ix = 1
+      iy = 1
+      if(incx.lt.0)ix = (-n+1)*incx + 1
+      if(incy.lt.0)iy = (-n+1)*incy + 1
+      do 10 i = 1,n
+        zy(iy) = zy(iy) + za*zx(ix)
+        ix = ix + incx
+        iy = iy + incy
+   10 continue
+      return
+c
+c        code for both increments equal to 1
+c
+   20 do 30 i = 1,n
+        zy(i) = zy(i) + za*zx(i)
+   30 continue
+      return
+      end