From 7ce331c01ce6eb7b3f5c715a38a24359da9c6ee2 Mon Sep 17 00:00:00 2001
From: Eric Andersen <andersen@codepoet.org>
Date: Thu, 22 Nov 2001 14:04:29 +0000
Subject: Totally rework the math library, this time based on the MacOs X math
 library (which is itself based on the math lib from FreeBSD).  -Erik

---
 libm/w_acosh.c | 42 ++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 42 insertions(+)
 create mode 100644 libm/w_acosh.c

(limited to 'libm/w_acosh.c')

diff --git a/libm/w_acosh.c b/libm/w_acosh.c
new file mode 100644
index 000000000..f05887972
--- /dev/null
+++ b/libm/w_acosh.c
@@ -0,0 +1,42 @@
+/* @(#)w_acosh.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_acosh.c,v 1.6 1995/05/10 20:48:31 jtc Exp $";
+#endif
+
+/* 
+ * wrapper acosh(x)
+ */
+
+#include "math.h"
+#include "math_private.h"
+
+#ifdef __STDC__
+	double acosh(double x)		/* wrapper acosh */
+#else
+	double acosh(x)			/* wrapper acosh */
+	double x;
+#endif
+{
+#ifdef _IEEE_LIBM
+	return __ieee754_acosh(x);
+#else
+	double z;
+	z = __ieee754_acosh(x);
+	if(_LIB_VERSION == _IEEE_ || isnan(x)) return z;
+	if(x<1.0) {
+	        return __kernel_standard(x,x,29); /* acosh(x<1) */
+	} else
+	    return z;
+#endif
+}
-- 
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