10  * See the License for the specific language governing permissions
  11  * and limitations under the License.
  12  *
  13  * When distributing Covered Code, include this CDDL HEADER in each
  14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  15  * If applicable, add the following below this CDDL HEADER, with the
  16  * fields enclosed by brackets "[]" replaced with your own identifying
  17  * information: Portions Copyright [yyyy] [name of copyright owner]
  18  *
  19  * CDDL HEADER END
  20  */
  21 
  22 /*
  23  * Copyright 2011 Nexenta Systems, Inc.  All rights reserved.
  24  */
  25 /*
  26  * Copyright 2006 Sun Microsystems, Inc.  All rights reserved.
  27  * Use is subject to license terms.
  28  */
  29 
  30 #pragma weak cacosh = __cacosh
  31 
  32 /* INDENT OFF */
  33 /*
  34  * dcomplex cacosh(dcomplex z);
  35  *      cacosh z = +-i cacos z .
  36  * In order to make conj(cacosh(z))=cacosh(conj(z)),
  37  * we define
  38  *      cacosh z = sign(Im(z))*i cacos z .
  39  *
  40  */
  41 /* INDENT ON */
  42 
  43 #include "libm.h"       /* fabs/isnan/isinf/signbit */
  44 #include "complex_wrapper.h"
  45 
  46 /* need to work on special cases according to spec */
  47 
  48 dcomplex
  49 cacosh(dcomplex z) {
  50         dcomplex w, ans;

  10  * See the License for the specific language governing permissions
  11  * and limitations under the License.
  12  *
  13  * When distributing Covered Code, include this CDDL HEADER in each
  14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  15  * If applicable, add the following below this CDDL HEADER, with the
  16  * fields enclosed by brackets "[]" replaced with your own identifying
  17  * information: Portions Copyright [yyyy] [name of copyright owner]
  18  *
  19  * CDDL HEADER END
  20  */
  21 
  22 /*
  23  * Copyright 2011 Nexenta Systems, Inc.  All rights reserved.
  24  */
  25 /*
  26  * Copyright 2006 Sun Microsystems, Inc.  All rights reserved.
  27  * Use is subject to license terms.
  28  */
  29 
  30 #pragma weak __cacosh = cacosh
  31 
  32 /* INDENT OFF */
  33 /*
  34  * dcomplex cacosh(dcomplex z);
  35  *      cacosh z = +-i cacos z .
  36  * In order to make conj(cacosh(z))=cacosh(conj(z)),
  37  * we define
  38  *      cacosh z = sign(Im(z))*i cacos z .
  39  *
  40  */
  41 /* INDENT ON */
  42 
  43 #include "libm.h"       /* fabs/isnan/isinf/signbit */
  44 #include "complex_wrapper.h"
  45 
  46 /* need to work on special cases according to spec */
  47 
  48 dcomplex
  49 cacosh(dcomplex z) {
  50         dcomplex w, ans;