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 }
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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 }
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