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-rw-r--r--missing/lgamma_r.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/missing/lgamma_r.c b/missing/lgamma_r.c
index ba8535b18a..64ca829f10 100644
--- a/missing/lgamma_r.c
+++ b/missing/lgamma_r.c
@@ -8,6 +8,7 @@ reference - Haruhiko Okumura: C-gengo niyoru saishin algorithm jiten
http://oku.edu.mie-u.ac.jp/~okumura/algo/
*/
+#include "ruby/missing.h"
/***********************************************************
gamma.c -- Gamma function
***********************************************************/