-/* Copyright (C) 1991 Free Software Foundation, Inc.
+/* Copyright (C) 1991, 1992 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
#include <ansidecl.h>
#include <math.h>
+#ifdef __GNUC__
+
static CONST double
PIo4 = 7.8539816339744827900E-1 , /*Hex 2^ -1 * 1.921FB54442D18 */
PIo2 = 1.5707963267948965580E0 , /*Hex 2^ 0 * 1.921FB54442D18 */
return __copysign(atan(y / x), signy);
}
+
+#else
+#include <sysdeps/ieee754/atan2.c>
+#endif