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-rw-r--r--doc/source/f2py/code/extcallback.f14
1 files changed, 14 insertions, 0 deletions
diff --git a/doc/source/f2py/code/extcallback.f b/doc/source/f2py/code/extcallback.f
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index 000000000..9a800628e
--- /dev/null
+++ b/doc/source/f2py/code/extcallback.f
@@ -0,0 +1,14 @@
+ subroutine f1()
+ print *, "in f1, calling f2 twice.."
+ call f2()
+ call f2()
+ return
+ end
+
+ subroutine f2()
+cf2py intent(callback, hide) fpy
+ external fpy
+ print *, "in f2, calling f2py.."
+ call fpy()
+ return
+ end