2.5-18.1

1 files changed, 46 insertions, 0 deletions

diff --git a/math/w_atan2f.c b/math/w_atan2f.c
new file mode 100644
index 0000000000..efb08f076b
--- /dev/null
+++ b/math/w_atan2f.c
@@ -0,0 +1,46 @@
+/* w_atan2f.c -- float version of w_atan2.c.
+ * Conversion to float by Ian Lance Taylor, Cygnus Support, ian@cygnus.com.
+ */
+
+/*
+ * ====================================================
+ * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
+ *
+ * Developed at SunPro, a Sun Microsystems, Inc. business.
+ * Permission to use, copy, modify, and distribute this
+ * software is freely granted, provided that this notice
+ * is preserved.
+ * ====================================================
+ */
+
+#if defined(LIBM_SCCS) && !defined(lint)
+static char rcsid[] = "$NetBSD: w_atan2f.c,v 1.3 1995/05/10 20:48:42 jtc Exp $";
+#endif
+
+/*
+ * wrapper atan2f(y,x)
+ */
+
+#include <math.h>
+#include "math_private.h"
+
+
+#ifdef __STDC__
+	float __atan2f(float y, float x)		/* wrapper atan2f */
+#else
+	float __atan2f(y,x)			/* wrapper atan2 */
+	float y,x;
+#endif
+{
+#ifdef _IEEE_LIBM
+	return __ieee754_atan2f(y,x);
+#else
+	float z;
+	z = __ieee754_atan2f(y,x);
+	if(_LIB_VERSION != _SVID_||__isnanf(x)||__isnanf(y)) return z;
+	if(x==0.0&&y==0.0)
+	  return __kernel_standard(y,x,103); /* atan2(+-0,+-0) */
+	return z;
+#endif
+}
+weak_alias (__atan2f, atan2f)