1 files changed, 17 insertions, 0 deletions
diff --git a/winsup/cygwin/math/atanl.c b/winsup/cygwin/math/atanl.c
new file mode 100644
index 0000000..b85d053
--- /dev/null
+++ b/winsup/cygwin/math/atanl.c
@@ -0,0 +1,17 @@
+/**
+ * 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.
+ */
+long double atanl (long double x);
+
+long double
+atanl (long double x)
+{
+  long double res = 0.0L;
+
+  asm ("fld1\n\t"
+       "fpatan"
+       : "=t" (res) : "0" (x));
+  return res;
+}