From 4abab5ad6c8465a7528ccdd5f49367da05f78bbd Mon Sep 17 00:00:00 2001
From: Vladimir Azarov <avm@intermediate-node.net>
Date: Tue, 1 Oct 2024 15:47:05 +0200
Subject: Initial version

---
 src/math/__signbitl.c | 14 ++++++++++++++
 1 file changed, 14 insertions(+)
 create mode 100644 src/math/__signbitl.c

(limited to 'src/math/__signbitl.c')

diff --git a/src/math/__signbitl.c b/src/math/__signbitl.c
new file mode 100644
index 0000000..63b3dc5
--- /dev/null
+++ b/src/math/__signbitl.c
@@ -0,0 +1,14 @@
+#include "libm.h"
+
+#if (LDBL_MANT_DIG == 64 || LDBL_MANT_DIG == 113) && LDBL_MAX_EXP == 16384
+int __signbitl(long double x)
+{
+	union ldshape u = {x};
+	return u.i.se >> 15;
+}
+#elif LDBL_MANT_DIG == 53 && LDBL_MAX_EXP == 1024
+int __signbitl(long double x)
+{
+	return __signbit(x);
+}
+#endif
-- 
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