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authorJakub Jelinek <jakub@redhat.com>2007-07-12 18:26:36 +0000
committerJakub Jelinek <jakub@redhat.com>2007-07-12 18:26:36 +0000
commit0ecb606cb6cf65de1d9fc8a919bceb4be476c602 (patch)
tree2ea1f8305970753e4a657acb2ccc15ca3eec8e2c /math/w_atan2.c
parent7d58530341304d403a6626d7f7a1913165fe2f32 (diff)
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2.5-18.1
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-rw-r--r--math/w_atan2.c47
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diff --git a/math/w_atan2.c b/math/w_atan2.c
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+/* @(#)w_atan2.c 5.1 93/09/24 */
+/*
+ * ====================================================
+ * 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_atan2.c,v 1.6 1995/05/10 20:48:39 jtc Exp $";
+#endif
+
+/*
+ * wrapper atan2(y,x)
+ */
+
+#include <math.h>
+#include "math_private.h"
+
+
+#ifdef __STDC__
+	double __atan2(double y, double x)	/* wrapper atan2 */
+#else
+	double __atan2(y,x)			/* wrapper atan2 */
+	double y,x;
+#endif
+{
+#ifdef _IEEE_LIBM
+	return __ieee754_atan2(y,x);
+#else
+	double z;
+	z = __ieee754_atan2(y,x);
+	if(_LIB_VERSION != _SVID_||__isnan(x)||__isnan(y)) return z;
+	if(x==0.0&&y==0.0)
+	  return __kernel_standard(y,x,3); /* atan2(+-0,+-0) */
+	return z;
+#endif
+}
+weak_alias (__atan2, atan2)
+#ifdef NO_LONG_DOUBLE
+strong_alias (__atan2, __atan2l)
+weak_alias (__atan2, atan2l)
+#endif