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usr/lib/libcervus/math/fabs.c

@@ -0,0 +1,12 @@
+#include <math.h>
+#include <stdint.h>
+
+double fabs(double x) {
+    union {
+        double d;
+        uint64_t i;
+    } u = { .d = x };
+    
+    u.i &= 0x7FFFFFFFFFFFFFFFULL;
+    return u.d;
+}