1 files changed, 12 insertions, 0 deletions
diff --git a/lib/libm/fabs.c b/lib/libm/fabs.c
new file mode 100644
index 00000000..deb2dc42
--- /dev/null
+++ b/lib/libm/fabs.c
@@ -0,0 +1,12 @@
+#include <math.h>
+#include <stdint.h>
+
+double fabs(double x)
+{
+	union {
+		double f;
+		uint64_t i;
+	} u = { x };
+	u.i &= -1ULL / 2;
+	return u.f;
+}