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11210 libm should be cstyle(1ONBLD) clean
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--- old/usr/src/lib/libm/common/R/scalbnf.c
+++ new/usr/src/lib/libm/common/R/scalbnf.c
1 1 /*
2 2 * CDDL HEADER START
3 3 *
4 4 * The contents of this file are subject to the terms of the
5 5 * Common Development and Distribution License (the "License").
6 6 * You may not use this file except in compliance with the License.
7 7 *
8 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 9 * or http://www.opensolaris.org/os/licensing.
10 10 * See the License for the specific language governing permissions
11 11 * and limitations under the License.
12 12 *
13 13 * When distributing Covered Code, include this CDDL HEADER in each
14 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
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15 15 * If applicable, add the following below this CDDL HEADER, with the
16 16 * fields enclosed by brackets "[]" replaced with your own identifying
17 17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 18 *
19 19 * CDDL HEADER END
20 20 */
21 21
22 22 /*
23 23 * Copyright 2011 Nexenta Systems, Inc. All rights reserved.
24 24 */
25 +
25 26 /*
26 27 * Copyright 2006 Sun Microsystems, Inc. All rights reserved.
27 28 * Use is subject to license terms.
28 29 */
29 30
30 31 #pragma weak __scalbnf = scalbnf
31 32
32 33 #include "libm.h"
33 -#include <float.h> /* FLT_MAX, FLT_MIN */
34 -#include <stdlib.h> /* abs */
34 +#include <float.h> /* FLT_MAX, FLT_MIN */
35 +#include <stdlib.h> /* abs */
35 36
36 37 static const float twom25f = 2.98023223876953125e-8F;
38 +
37 39 #if defined(__x86)
38 40 static const float two23f = 8388608.0F;
39 41 #else
40 42 /*
41 43 * v: a non-zero subnormal |x|; returns [-22, 0]
42 44 */
43 45 static int
44 -ilogbf_biased(unsigned v) {
46 +ilogbf_biased(unsigned v)
47 +{
45 48 int r = -22;
46 49
47 50 if (v & 0xffff0000)
48 51 r += 16, v >>= 16;
52 +
49 53 if (v & 0xff00)
50 54 r += 8, v >>= 8;
55 +
51 56 if (v & 0xf0)
52 57 r += 4, v >>= 4;
58 +
53 59 v <<= 1;
54 60 return (r + ((0xffffaa50 >> v) & 0x3));
55 61 }
56 -#endif /* defined(__x86) */
62 +#endif /* defined(__x86) */
57 63
58 64 float
59 -scalbnf(float x, int n) {
60 - int *px = (int *) &x, ix, k;
65 +scalbnf(float x, int n)
66 +{
67 + int *px = (int *)&x, ix, k;
61 68
62 69 ix = *px & ~0x80000000;
63 70 k = ix >> 23;
71 +
64 72 if (k == 0xff)
65 73 #if defined(FPADD_TRAPS_INCOMPLETE_ON_NAN)
66 74 return (ix > 0x7f800000 ? x * x : x);
67 75 #else
68 76 return (x + x);
69 77 #endif
78 +
70 79 if (ix == 0 || n == 0)
71 80 return (x);
81 +
72 82 if (k == 0) {
73 83 #if defined(__x86)
74 84 x *= two23f;
75 85 k = ((*px & ~0x80000000) >> 23) - 23;
76 86 #else
77 87 k = ilogbf_biased(ix);
78 88 *px = (*px & 0x80000000) | (ix << (-k + 1));
79 89 #endif
80 90 }
81 - if ((unsigned) abs(n) >= 131072) /* cast to unsigned for -2^31 */
91 +
92 + if ((unsigned)abs(n) >= 131072) /* cast to unsigned for -2^31 */
82 93 n >>= 1; /* avoid subsequent integer overflow */
94 +
83 95 k += n;
96 +
84 97 if (k > 0xfe)
85 98 return (FLT_MAX * copysignf(FLT_MAX, x));
99 +
86 100 if (k <= -25)
87 101 return (FLT_MIN * copysignf(FLT_MIN, x));
102 +
88 103 if (k > 0) {
89 104 *px = (*px & ~0x7f800000) | (k << 23);
90 105 return (x);
91 106 }
107 +
92 108 k += 25;
93 109 *px = (*px & ~0x7f800000) | (k << 23);
94 110 return (x * twom25f);
95 111 }
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