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5261 libm should stop using synonyms.h
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--- old/usr/src/lib/libm/common/m9x/lrintl.c
+++ new/usr/src/lib/libm/common/m9x/lrintl.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.
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
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20 20 */
21 21
22 22 /*
23 23 * Copyright 2011 Nexenta Systems, Inc. All rights reserved.
24 24 */
25 25 /*
26 26 * Copyright 2006 Sun Microsystems, Inc. All rights reserved.
27 27 * Use is subject to license terms.
28 28 */
29 29
30 -#pragma weak lrintl = __lrintl
30 +#pragma weak __lrintl = lrintl
31 31
32 32 #include <sys/isa_defs.h> /* _ILP32 */
33 33 #include "libm.h"
34 34
35 35 #if defined(_ILP32)
36 36 #if defined(__sparc)
37 37
38 38 #include "fma.h"
39 39 #include "fenv_inlines.h"
40 40
41 41 long
42 42 lrintl(long double x) {
43 43 union {
44 44 unsigned int i[4];
45 45 long double q;
46 46 } xx;
47 47 union {
48 48 unsigned int i;
49 49 float f;
50 50 } tt;
51 51 unsigned int hx, sx, frac, l, fsr;
52 52 int rm, j;
53 53 volatile float dummy;
54 54
55 55 xx.q = x;
56 56 sx = xx.i[0] & 0x80000000;
57 57 hx = xx.i[0] & ~0x80000000;
58 58
59 59 /* handle trivial cases */
60 60 if (hx > 0x401e0000) { /* |x| > 2^31 + ... or x is nan */
61 61 /* convert an out-of-range float */
62 62 tt.i = sx | 0x7f000000;
63 63 return ((long) tt.f);
64 64 } else if ((hx | xx.i[1] | xx.i[2] | xx.i[3]) == 0) /* x is zero */
65 65 return (0L);
66 66
67 67 /* get the rounding mode */
68 68 __fenv_getfsr32(&fsr);
69 69 rm = fsr >> 30;
70 70
71 71 /* flip the sense of directed roundings if x is negative */
72 72 if (sx)
73 73 rm ^= rm >> 1;
74 74
75 75 /* handle |x| < 1 */
76 76 if (hx < 0x3fff0000) {
77 77 dummy = 1.0e30F; /* x is nonzero, so raise inexact */
78 78 dummy += 1.0e-30F;
79 79 if (rm == FSR_RP || (rm == FSR_RN && (hx >= 0x3ffe0000 &&
80 80 ((hx & 0xffff) | xx.i[1] | xx.i[2] | xx.i[3]))))
81 81 return (sx ? -1L : 1L);
82 82 return (0L);
83 83 }
84 84
85 85 /* extract the integer and fractional parts of x */
86 86 j = 0x406f - (hx >> 16); /* 91 <= j <= 112 */
87 87 xx.i[0] = 0x10000 | (xx.i[0] & 0xffff);
88 88 if (j >= 96) { /* 96 <= j <= 112 */
89 89 l = xx.i[0] >> (j - 96);
90 90 frac = ((xx.i[0] << 1) << (127 - j)) | (xx.i[1] >> (j - 96));
91 91 if (((xx.i[1] << 1) << (127 - j)) | xx.i[2] | xx.i[3])
92 92 frac |= 1;
93 93 } else { /* 91 <= j <= 95 */
94 94 l = (xx.i[0] << (96 - j)) | (xx.i[1] >> (j - 64));
95 95 frac = (xx.i[1] << (96 - j)) | (xx.i[2] >> (j - 64));
96 96 if ((xx.i[2] << (96 - j)) | xx.i[3])
97 97 frac |= 1;
98 98 }
99 99
100 100 /* round */
101 101 if (frac && (rm == FSR_RP || (rm == FSR_RN && (frac > 0x80000000U ||
102 102 (frac == 0x80000000 && (l & 1))))))
103 103 l++;
104 104
105 105 /* check for result out of range (note that z is |x| at this point) */
106 106 if (l > 0x80000000U || (l == 0x80000000U && !sx)) {
107 107 tt.i = sx | 0x7f000000;
108 108 return ((long) tt.f);
109 109 }
110 110
111 111 /* raise inexact if need be */
112 112 if (frac) {
113 113 dummy = 1.0e30F;
114 114 dummy += 1.0e-30F;
115 115 }
116 116
117 117 /* negate result if need be */
118 118 if (sx)
119 119 l = -l;
120 120 return ((long) l);
121 121 }
122 122 #elif defined(__x86)
123 123 long
124 124 lrintl(long double x) {
125 125 /*
126 126 * Note: The following code works on x86 (in the default rounding
127 127 * precision mode), but one ought to just use the fistpl instruction
128 128 * instead.
129 129 */
130 130 union {
131 131 unsigned i[3];
132 132 long double e;
133 133 } xx, yy;
134 134 int ex;
135 135
136 136 xx.e = x;
137 137 ex = xx.i[2] & 0x7fff;
138 138 if (ex < 0x403e) { /* |x| < 2^63 */
139 139 /* add and subtract a power of two to round x to an integer */
140 140 yy.i[2] = (xx.i[2] & 0x8000) | 0x403e;
141 141 yy.i[1] = 0x80000000;
142 142 yy.i[0] = 0;
143 143 x = (x + yy.e) - yy.e;
144 144 }
145 145
146 146 /* now x is nan, inf, or integral */
147 147 return ((long) x);
148 148 }
149 149 #else
150 150 #error Unknown architecture
151 151 #endif /* defined(__sparc) || defined(__x86) */
152 152 #else
153 153 #error Unsupported architecture
154 154 #endif /* defined(_ILP32) */
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