1 files changed, 29 insertions, 0 deletions
diff --git a/src/fortran/blas/zscal.f b/src/fortran/blas/zscal.f
new file mode 100644
index 0000000..6fa8576
--- /dev/null
+++ b/src/fortran/blas/zscal.f
@@ -0,0 +1,29 @@
+      subroutine  zscal(n,za,zx,incx)
+c
+c     scales a vector by a constant.
+c     jack dongarra, 3/11/78.
+c     modified 3/93 to return if incx .le. 0.
+c     modified 12/3/93, array(1) declarations changed to array(*)
+c
+      double complex za,zx(*)
+      integer i,incx,ix,n
+c
+      if( n.le.0 .or. incx.le.0 )return
+      if(incx.eq.1)go to 20
+c
+c        code for increment not equal to 1
+c
+      ix = 1
+      do 10 i = 1,n
+        zx(ix) = za*zx(ix)
+        ix = ix + incx
+   10 continue
+      return
+c
+c        code for increment equal to 1
+c
+   20 do 30 i = 1,n
+        zx(i) = za*zx(i)
+   30 continue
+      return
+      end