release/1.1.5.1_cvsreleng/1

1 files changed, 41 insertions, 0 deletions

diff --git a/lib/msun/src/w_acosh.c b/lib/msun/src/w_acosh.c
new file mode 100644
index 000000000000..17314d31d620
--- /dev/null
+++ b/lib/msun/src/w_acosh.c
@@ -0,0 +1,41 @@
+/* @(#)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.
+ * ====================================================
+ */
+
+#ifndef lint
+static char rcsid[] = "$Id: w_acosh.c,v 1.1.1.1 1994/05/06 00:20:09 gclarkii Exp $";
+#endif
+
+/* 
+ * wrapper acosh(x)
+ */
+
+#include "math.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
+}