1 files changed, 26 insertions, 0 deletions
diff --git a/winsup/cygwin/math/roundl.c b/winsup/cygwin/math/roundl.c
new file mode 100644
index 000000000..9879a82cc
--- /dev/null
+++ b/winsup/cygwin/math/roundl.c
@@ -0,0 +1,26 @@
+/**
+ * This file has no copyright assigned and is placed in the Public Domain.
+ * This file is part of the mingw-w64 runtime package.
+ * No warranty is given; refer to the file DISCLAIMER.PD within this package.
+ */
+#include <math.h>
+
+long double
+roundl (long double x)
+{
+  long double res = 0.0L;
+  if (x >= 0.0L)
+    {
+      res = ceill (x);
+      if (res - x > 0.5L)
+	res -= 1.0L;
+    }
+  else
+    {
+      res = ceill (-x);
+      if (res + x > 0.5L)
+	res -= 1.0L;
+      res = -res;
+    }
+  return res;
+}