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11210 libm should be cstyle(1ONBLD) clean
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--- old/usr/src/lib/libm/common/m9x/scalbln.c
+++ new/usr/src/lib/libm/common/m9x/scalbln.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 __scalbln = scalbln
31 32
32 33 #include "libm.h"
33 -#include <float.h> /* DBL_MAX, DBL_MIN */
34 +#include <float.h> /* DBL_MAX, DBL_MIN */
34 35
35 36 static const double twom54 = 5.5511151231257827021181583404541015625e-17;
37 +
36 38 #if defined(__x86)
37 39 static const double two52 = 4503599627370496.0;
38 40 #else
39 41 /*
40 42 * Normalize non-zero subnormal x and return biased exponent of x in [-51,0]
41 43 */
42 44 static int
43 -ilogb_biased(unsigned *px) {
45 +ilogb_biased(unsigned *px)
46 +{
44 47 int s = 52;
45 48 unsigned v = px[HIWORD] & ~0x80000000, w = px[LOWORD], t = v;
46 49
47 50 if (t)
48 51 s -= 32;
49 52 else
50 53 t = w;
54 +
51 55 if (t & 0xffff0000)
52 56 s -= 16, t >>= 16;
57 +
53 58 if (t & 0xff00)
54 59 s -= 8, t >>= 8;
60 +
55 61 if (t & 0xf0)
56 62 s -= 4, t >>= 4;
63 +
57 64 t <<= 1;
58 65 s -= (0xffffaa50 >> t) & 0x3;
66 +
59 67 if (s < 32) {
60 68 v = (v << s) | w >> (32 - s);
61 69 w <<= s;
62 70 } else {
63 71 v = w << (s - 32);
64 72 w = 0;
65 73 }
74 +
66 75 px[HIWORD] = (px[HIWORD] & 0x80000000) | v;
67 76 px[LOWORD] = w;
68 77 return (1 - s);
69 78 }
70 -#endif /* defined(__x86) */
79 +#endif /* defined(__x86) */
71 80
72 81 double
73 -scalbln(double x, long n) {
74 - int *px = (int *) &x, ix, k;
82 +scalbln(double x, long n)
83 +{
84 + int *px = (int *)&x, ix, k;
75 85
76 86 ix = px[HIWORD] & ~0x80000000;
77 87 k = ix >> 20;
88 +
78 89 if (k == 0x7ff)
79 90 #if defined(FPADD_TRAPS_INCOMPLETE_ON_NAN)
80 91 return ((px[HIWORD] & 0x80000) != 0 ? x : x + x);
81 - /* assumes sparc-like QNaN */
92 +
93 + /* assumes sparc-like QNaN */
82 94 #else
83 95 return (x + x);
84 96 #endif
97 +
85 98 if ((px[LOWORD] | ix) == 0 || n == 0)
86 99 return (x);
100 +
87 101 if (k == 0) {
88 102 #if defined(__x86)
89 103 x *= two52;
90 104 k = ((px[HIWORD] & ~0x80000000) >> 20) - 52;
91 105 #else
92 - k = ilogb_biased((unsigned *) px);
106 + k = ilogb_biased((unsigned *)px);
93 107 #endif
94 108 }
95 - k += (int) n;
109 +
110 + k += (int)n;
111 +
96 112 if (n > 5000 || k > 0x7fe)
97 113 return (DBL_MAX * copysign(DBL_MAX, x));
114 +
98 115 if (n < -5000 || k <= -54)
99 116 return (DBL_MIN * copysign(DBL_MIN, x));
117 +
100 118 if (k > 0) {
101 119 px[HIWORD] = (px[HIWORD] & ~0x7ff00000) | (k << 20);
102 120 return (x);
103 121 }
122 +
104 123 k += 54;
105 124 px[HIWORD] = (px[HIWORD] & ~0x7ff00000) | (k << 20);
106 125 return (x * twom54);
107 126 }
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