Import GotoBLAS2 1.13 BSD version codes.

reference/ixaminf.f

@@ -0,0 +1,41 @@
+      integer function ixaminf(n,zx,incx)
+c
+c     finds the index of element having min. absolute value.
+c     jack dongarra, 1/15/85.
+c     modified 3/93 to return if incx .le. 0.
+c     modified 12/3/93, array(1) declarations changed to array(*)
+c
+      complex*20 zx(*)
+      real*10 smin
+      integer i,incx,ix,n
+      real*10 qcabs1
+c
+      ixaminf = 0
+      if( n.lt.1 .or. incx.le.0 )return
+      ixaminf = 1
+      if(n.eq.1)return
+      if(incx.eq.1)go to 20
+c
+c        code for increment not equal to 1
+c
+      ix = 1
+      smin = qcabs1(zx(1))
+      ix = ix + incx
+      do 10 i = 2,n
+         if(qcabs1(zx(ix)).ge.smin) go to 5
+         ixaminf = i
+         smin = qcabs1(zx(ix))
+    5    ix = ix + incx
+   10 continue
+      return
+c
+c        code for increment equal to 1
+c
+   20 smin = qcabs1(zx(1))
+      do 30 i = 2,n
+         if(qcabs1(zx(i)).ge.smin) go to 30
+         ixaminf = i
+         smin = qcabs1(zx(i))
+   30 continue
+      return
+      end