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 roundf = __roundf
  32 #endif
  33 
  34 #include "libm.h"
  35 
  36 float
  37 roundf(float x) {
  38         union {
  39                 unsigned i;
  40                 float f;
  41         } xx;
  42         unsigned hx, sx, i;
  43 
  44         xx.f = x;
  45         hx = xx.i & ~0x80000000;
  46         sx = xx.i & 0x80000000;
  47         if (hx < 0x4b000000) {               /* |x| < 2^23 */
  48                 if (hx < 0x3f800000) {               /* |x| < 1 */
  49                         if (hx >= 0x3f000000)
  50                                 return (sx ? -1.0F : 1.0F);
  51                         return (sx ? -0.0F : 0.0F);
  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 roundf = __roundf

  31 
  32 #include "libm.h"
  33 
  34 float
  35 roundf(float x) {
  36         union {
  37                 unsigned i;
  38                 float f;
  39         } xx;
  40         unsigned hx, sx, i;
  41 
  42         xx.f = x;
  43         hx = xx.i & ~0x80000000;
  44         sx = xx.i & 0x80000000;
  45         if (hx < 0x4b000000) {               /* |x| < 2^23 */
  46                 if (hx < 0x3f800000) {               /* |x| < 1 */
  47                         if (hx >= 0x3f000000)
  48                                 return (sx ? -1.0F : 1.0F);
  49                         return (sx ? -0.0F : 0.0F);
  50                 }