2.5-18.1

1 files changed, 47 insertions, 0 deletions

diff --git a/math/w_acosh.c b/math/w_acosh.c
new file mode 100644
index 0000000000..e8322ec667
--- /dev/null
+++ b/math/w_acosh.c
@@ -0,0 +1,47 @@
+/* @(#)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
+}
+weak_alias (__acosh, acosh)
+#ifdef NO_LONG_DOUBLE
+strong_alias (__acosh, __acoshl)
+weak_alias (__acosh, acoshl)
+#endif