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 #if defined(ELFOBJ)
  31 #pragma weak asinl = __asinl
  32 #endif
  33 
  34 /*
  35  *      asinl(x) = atan2l(x,sqrt(1-x*x));
  36  *
  37  * For better accuracy, 1-x*x is computed as follows
  38  *      1-x*x                     if x <  0.5,
  39  *      2*(1-|x|)-(1-|x|)*(1-|x|) if x >= 0.5.
  40  *
  41  * Special cases:
  42  *      if x is NaN, return x itself;
  43  *      if |x|>1, return NaN with invalid signal.
  44  */
  45 
  46 #include "libm.h"
  47 
  48 static const long double zero = 0.0L, small = 1.0e-20L, half = 0.5L, one = 1.0L;
  49 #ifndef lint
  50 static const long double big = 1.0e+20L;
  51 #endif
  52 

  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 asinl = __asinl

  31 
  32 /*
  33  *      asinl(x) = atan2l(x,sqrt(1-x*x));
  34  *
  35  * For better accuracy, 1-x*x is computed as follows
  36  *      1-x*x                     if x <  0.5,
  37  *      2*(1-|x|)-(1-|x|)*(1-|x|) if x >= 0.5.
  38  *
  39  * Special cases:
  40  *      if x is NaN, return x itself;
  41  *      if |x|>1, return NaN with invalid signal.
  42  */
  43 
  44 #include "libm.h"
  45 
  46 static const long double zero = 0.0L, small = 1.0e-20L, half = 0.5L, one = 1.0L;
  47 #ifndef lint
  48 static const long double big = 1.0e+20L;
  49 #endif
  50