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-rw-r--r--src/math/lgamma_r.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/src/math/lgamma_r.c b/src/math/lgamma_r.c
index e3ed1733..82e296f5 100644
--- a/src/math/lgamma_r.c
+++ b/src/math/lgamma_r.c
@@ -79,6 +79,7 @@
  */
 
 #include "libm.h"
+#include "libc.h"
 
 static const double
 two52= 4.50359962737049600000e+15, /* 0x43300000, 0x00000000 */