Add a "fork" of musl as //fusl.
This is musl verbatim at d5f8394f6ea9549607567bd92de12a2446c15614.
See http://www.musl-libc.org/.
R=kulakowski@chromium.org
Review URL: https://codereview.chromium.org/1573973002 .
diff --git a/fusl/src/math/fabsf.c b/fusl/src/math/fabsf.c
new file mode 100644
index 0000000..4efc8d6
--- /dev/null
+++ b/fusl/src/math/fabsf.c
@@ -0,0 +1,9 @@
+#include <math.h>
+#include <stdint.h>
+
+float fabsf(float x)
+{
+ union {float f; uint32_t i;} u = {x};
+ u.i &= 0x7fffffff;
+ return u.f;
+}
