Generic w_acos.c.
authordrepper <drepper>
Wed, 14 Dec 2005 11:35:34 +0000 (11:35 +0000)
committerdrepper <drepper>
Wed, 14 Dec 2005 11:35:34 +0000 (11:35 +0000)
math/w_acos.c [new file with mode: 0644]

diff --git a/math/w_acos.c b/math/w_acos.c
new file mode 100644 (file)
index 0000000..f4e6e3c
--- /dev/null
@@ -0,0 +1,48 @@
+/* @(#)w_acos.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_acos.c,v 1.6 1995/05/10 20:48:26 jtc Exp $";
+#endif
+
+/*
+ * wrap_acos(x)
+ */
+
+#include <math.h>
+#include "math_private.h"
+
+
+#ifdef __STDC__
+       double __acos(double x)         /* wrapper acos */
+#else
+       double __acos(x)                        /* wrapper acos */
+       double x;
+#endif
+{
+#ifdef _IEEE_LIBM
+       return __ieee754_acos(x);
+#else
+       double z;
+       z = __ieee754_acos(x);
+       if(_LIB_VERSION == _IEEE_ || __isnan(x)) return z;
+       if(fabs(x)>1.0) {
+               return __kernel_standard(x,x,1); /* acos(|x|>1) */
+       } else
+           return z;
+#endif
+}
+weak_alias (__acos, acos)
+#ifdef NO_LONG_DOUBLE
+strong_alias (__acos, __acosl)
+weak_alias (__acos, acosl)
+#endif