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 isnanl = __isnanl
  32 #endif
  33 
  34 #include "libm.h"
  35 
  36 #if defined(__sparc)
  37 int
  38 isnanl(long double x) {
  39         int *px = (int *) &x;
  40         return ((px[0] & ~0x80000000) >= 0x7fff0000 &&
  41                 ((px[0] & ~0xffff0000) | px[1] | px[2] | px[3]) != 0);
  42 }
  43 #elif defined(__x86)
  44 int
  45 isnanl(long double x) {
  46         int *px = (int *) &x, t = px[2] & 0x7fff;
  47 #if defined(HANDLE_UNSUPPORTED)
  48         return ((t == 0x7fff && ((px[1] & ~0x80000000) | px[0]) != 0) ||
  49                 (t != 0 && (px[1] & 0x80000000) == 0));
  50 #else
  51         return (t == 0x7fff && ((px[1] & ~0x80000000) | px[0]) != 0);
  52 #endif

  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 isnanl = __isnanl

  31 
  32 #include "libm.h"
  33 
  34 #if defined(__sparc)
  35 int
  36 isnanl(long double x) {
  37         int *px = (int *) &x;
  38         return ((px[0] & ~0x80000000) >= 0x7fff0000 &&
  39                 ((px[0] & ~0xffff0000) | px[1] | px[2] | px[3]) != 0);
  40 }
  41 #elif defined(__x86)
  42 int
  43 isnanl(long double x) {
  44         int *px = (int *) &x, t = px[2] & 0x7fff;
  45 #if defined(HANDLE_UNSUPPORTED)
  46         return ((t == 0x7fff && ((px[1] & ~0x80000000) | px[0]) != 0) ||
  47                 (t != 0 && (px[1] & 0x80000000) == 0));
  48 #else
  49         return (t == 0x7fff && ((px[1] & ~0x80000000) | px[0]) != 0);
  50 #endif