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  * Copyright 2011 Nexenta Systems, Inc.  All rights reserved.
  23  */
  24 /*
  25  * Copyright 2005 Sun Microsystems, Inc.  All rights reserved.
  26  * Use is subject to license terms.
  27  */
  28 
  29 #pragma weak scalbf = __scalbf
  30 
  31 #include "libm.h"
  32 
  33 float
  34 scalbf(float x, float y) {
  35         int     ix, iy, hx, hy, n;
  36 
  37         ix = *(int *)&x;
  38         iy = *(int *)&y;
  39         hx = ix & ~0x80000000;
  40         hy = iy & ~0x80000000;
  41 
  42         if (hx > 0x7f800000 || hy >= 0x7f800000) {
  43                 /* x is nan or y is inf or nan */
  44                 return ((iy < 0)? x / -y : x * y);
  45         }
  46 
  47         /* see if y is an integer without raising inexact */
  48         if (hy >= 0x4b000000) {
  49                 /* |y| >= 2^23, so it must be an integer */

   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  * Copyright 2011 Nexenta Systems, Inc.  All rights reserved.
  23  */
  24 /*
  25  * Copyright 2005 Sun Microsystems, Inc.  All rights reserved.
  26  * Use is subject to license terms.
  27  */
  28 
  29 #pragma weak __scalbf = scalbf
  30 
  31 #include "libm.h"
  32 
  33 float
  34 scalbf(float x, float y) {
  35         int     ix, iy, hx, hy, n;
  36 
  37         ix = *(int *)&x;
  38         iy = *(int *)&y;
  39         hx = ix & ~0x80000000;
  40         hy = iy & ~0x80000000;
  41 
  42         if (hx > 0x7f800000 || hy >= 0x7f800000) {
  43                 /* x is nan or y is inf or nan */
  44                 return ((iy < 0)? x / -y : x * y);
  45         }
  46 
  47         /* see if y is an integer without raising inexact */
  48         if (hy >= 0x4b000000) {
  49                 /* |y| >= 2^23, so it must be an integer */