1 files changed, 47 insertions, 0 deletions
diff --git a/usr/src/libm/src/complex/ctanl.c b/usr/src/libm/src/complex/ctanl.c
new file mode 100644
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+++ b/usr/src/libm/src/complex/ctanl.c
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+/*
+ * CDDL HEADER START
+ *
+ * The contents of this file are subject to the terms of the
+ * Common Development and Distribution License (the "License").
+ * You may not use this file except in compliance with the License.
+ *
+ * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
+ * or http://www.opensolaris.org/os/licensing.
+ * See the License for the specific language governing permissions
+ * and limitations under the License.
+ *
+ * When distributing Covered Code, include this CDDL HEADER in each
+ * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
+ * If applicable, add the following below this CDDL HEADER, with the
+ * fields enclosed by brackets "[]" replaced with your own identifying
+ * information: Portions Copyright [yyyy] [name of copyright owner]
+ *
+ * CDDL HEADER END
+ */
+
+/*
+ * Copyright 2006 Sun Microsystems, Inc.  All rights reserved.
+ * Use is subject to license terms.
+ */
+
+#pragma ident	"@(#)ctanl.c	1.3	06/01/31 SMI"
+
+#pragma weak ctanl = __ctanl
+
+#include "libm.h"
+#include "complex_wrapper.h"
+
+ldcomplex
+ctanl(ldcomplex z) {
+	long double x, y;
+	ldcomplex ans, ct;
+
+	x = LD_RE(z);
+	y = LD_IM(z);
+	LD_RE(z) = y;
+	LD_IM(z) = -x;
+	ct = ctanhl(z);
+	LD_RE(ans) = -LD_IM(ct);
+	LD_IM(ans) = LD_RE(ct);
+	return (ans);
+}