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-rw-r--r--src/math/lgammal.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/src/math/lgammal.c b/src/math/lgammal.c
index 5d56358e..cc4895eb 100644
--- a/src/math/lgammal.c
+++ b/src/math/lgammal.c
@@ -87,6 +87,7 @@
#define _GNU_SOURCE
#include "libm.h"
+#include "libc.h"
#if LDBL_MANT_DIG == 53 && LDBL_MAX_EXP == 1024
double __lgamma_r(double x, int *sg);