first commit of the new libm!

[musl] / src / math / __signbitf.c

diff --git a/src/math/__signbitf.c b/src/math/__signbitf.c
new file mode 100644 (file)
index 0000000..ff3e81f
--- /dev/null
+++ b/src/math/__signbitf.c
@@ -0,0 +1,11 @@
+#include "libm.h"
+
+// FIXME
+int __signbitf(float x)
+{
+       union {
+               float f;
+               uint32_t i;
+       } y = { x };
+       return y.i>>31;
+}