/* * 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 2011 Nexenta Systems, Inc. All rights reserved. */ /* * Copyright 2006 Sun Microsystems, Inc. All rights reserved. * Use is subject to license terms. */ #pragma weak __catanh = catanh /* INDENT OFF */ /* * z := x + iy * catanh(z) = -i catan(iz) * = -i catan(-y+ix) * = (Im(catan(-y+ix)), -Re(catan(-y+ix))) */ /* INDENT ON */ #include "libm.h" #include "complex_wrapper.h" dcomplex catanh(dcomplex z) { double x, y; dcomplex ans, ct; x = D_RE(z); y = D_IM(z); D_RE(z) = -y; D_IM(z) = x; ct = catan(z); D_RE(ans) = D_IM(ct); D_IM(ans) = -D_RE(ct); return (ans); }