1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License (the "License").
   6  * You may not use this file except in compliance with the License.
   7  *
   8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
   9  * or http://www.opensolaris.org/os/licensing.
  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 nanl = __nanl
  31 
  32 #include "libm.h"
  33 
  34 #if defined(__sparc)
  35 
  36 static const union {
  37         unsigned i[4];
  38         long double ld;
  39 } __nanl_union = { 0x7fffffff, 0xffffffff, 0xffffffff, 0xffffffff };
  40 
  41 #elif defined(__x86)
  42 
  43 static const union {
  44         unsigned i[3];
  45         long double ld;
  46 } __nanl_union = { 0xffffffff, 0xffffffff, 0x7fff };
  47 
  48 #else
  49 #error Unknown architecture
  50 #endif
  51 
  52 /* ARGSUSED0 */
  53 long double
  54 __nanl(const char *c) {
  55         return (__nanl_union.ld);
  56 }