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-rw-r--r--psi/zfunc.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/psi/zfunc.h b/psi/zfunc.h
index 607d5b84b..a7d4eb096 100644
--- a/psi/zfunc.h
+++ b/psi/zfunc.h
@@ -19,6 +19,9 @@
#ifndef zfunc_INCLUDED
# define zfunc_INCLUDED
+#include "iref.h"
+#include "gsfunc.h"
+
/* imported from zfsample.c */
int make_sampled_function(i_ctx_t * i_ctx_p, ref *arr, ref *pproc, gs_function_t **func);
/* imported from zfunc4.c */