1 files changed, 8 insertions, 0 deletions
diff --git a/winsup/mingw/mingwex/log2.c b/winsup/mingw/mingwex/log2.c
new file mode 100644
index 000000000..4f14f2614
--- /dev/null
+++ b/winsup/mingw/mingwex/log2.c
@@ -0,0 +1,8 @@
+#include <math.h>
+double
+log2 (double _x)
+{
+  double retval;
+  __asm__ ("fyl2x;" : "=t" (retval) : "0" (_x), "u" (1.0L) : "st(1)");
+  return retval;
+}