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authorSiddhesh Wani2015-05-25 14:46:31 +0530
committerSiddhesh Wani2015-05-25 14:46:31 +0530
commit6a320264c2de3d6dd8cc1d1327b3c30df4c8cb26 (patch)
tree1b7bd89fdcfd01715713d8a15db471dc75a96bbf /2.3-1/src/fortran/blas/zcopy.f
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Original Version
Diffstat (limited to '2.3-1/src/fortran/blas/zcopy.f')
-rw-r--r--2.3-1/src/fortran/blas/zcopy.f33
1 files changed, 33 insertions, 0 deletions
diff --git a/2.3-1/src/fortran/blas/zcopy.f b/2.3-1/src/fortran/blas/zcopy.f
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+++ b/2.3-1/src/fortran/blas/zcopy.f
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+ subroutine zcopy(n,zx,incx,zy,incy)
+c
+c copies a vector, x, to a vector, y.
+c jack dongarra, linpack, 4/11/78.
+c modified 12/3/93, array(1) declarations changed to array(*)
+c
+ double complex zx(*),zy(*)
+ integer i,incx,incy,ix,iy,n
+c
+ if(n.le.0)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) = 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) = zx(i)
+ 30 continue
+ return
+ end