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-rw-r--r--2.3-1/src/fortran/blas/zscal.f29
1 files changed, 29 insertions, 0 deletions
diff --git a/2.3-1/src/fortran/blas/zscal.f b/2.3-1/src/fortran/blas/zscal.f
new file mode 100644
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--- /dev/null
+++ b/2.3-1/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