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5261 libm should stop using synonyms.h
5298 fabs is 0-sized, confuses dis(1) and others
Reviewed by: Josef 'Jeff' Sipek <jeffpc@josefsipek.net>
Approved by: Gordon Ross <gwr@nexenta.com>


  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 atanhl = __atanhl
  31 
  32 #include "libm.h"
  33 
  34 /*
  35  *                   1              2x                           x
  36  *      atanhl(x) = --- * LOG(1 + -------) = 0.5 * log1pl(2 * --------)
  37  *                   2             1 - x                       1 - x
  38  * Note: to guarantee atanhl(-x) = -atanhl(x), we use
  39  *                  sign(x)              |x|
  40  *      atanhl(x) = ------- * log1pl(2*-------).
  41  *                     2               1 - |x|
  42  *
  43  * Special cases:
  44  *      atanhl(x) is NaN if |x| > 1 with signal;
  45  *      atanhl(NaN) is that NaN with no signal;
  46  *      atanhl(+-1) is +-INF with signal.
  47  *
  48  */
  49 
  50 static const long double zero = 0.0L, half = 0.5L, one = 1.0L;



  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 __atanhl = atanhl
  31 
  32 #include "libm.h"
  33 
  34 /*
  35  *                   1              2x                           x
  36  *      atanhl(x) = --- * LOG(1 + -------) = 0.5 * log1pl(2 * --------)
  37  *                   2             1 - x                       1 - x
  38  * Note: to guarantee atanhl(-x) = -atanhl(x), we use
  39  *                  sign(x)              |x|
  40  *      atanhl(x) = ------- * log1pl(2*-------).
  41  *                     2               1 - |x|
  42  *
  43  * Special cases:
  44  *      atanhl(x) is NaN if |x| > 1 with signal;
  45  *      atanhl(NaN) is that NaN with no signal;
  46  *      atanhl(+-1) is +-INF with signal.
  47  *
  48  */
  49 
  50 static const long double zero = 0.0L, half = 0.5L, one = 1.0L;