From 885f5974cdf65b59415837ae97f5a14ef1350670 Mon Sep 17 00:00:00 2001
From: Kacper <kacper@mail.openlinux.dev>
Date: Tue, 9 Dec 2025 19:20:15 +0100
Subject: feat: add gzip and new headers

---
 lib/libm/copysign.c | 12 ++++++++++++
 1 file changed, 12 insertions(+)
 create mode 100644 lib/libm/copysign.c

(limited to 'lib/libm/copysign.c')

diff --git a/lib/libm/copysign.c b/lib/libm/copysign.c
new file mode 100644
index 00000000..26982cea
--- /dev/null
+++ b/lib/libm/copysign.c
@@ -0,0 +1,12 @@
+#include "libm.h"
+
+double copysign(double x, double y)
+{
+	union {
+		double f;
+		uint64_t i;
+	} ux = { x }, uy = { y };
+	ux.i &= -1ULL / 2;
+	ux.i |= uy.i & 1ULL << 63;
+	return ux.f;
+}
-- 
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