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11210 libm should be cstyle(1ONBLD) clean
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--- old/usr/src/lib/libm/common/C/cos.c
+++ new/usr/src/lib/libm/common/C/cos.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
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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
20 20 */
21 +
21 22 /*
22 23 * Copyright 2011 Nexenta Systems, Inc. All rights reserved.
23 24 */
25 +
24 26 /*
25 27 * Copyright 2005 Sun Microsystems, Inc. All rights reserved.
26 28 * Use is subject to license terms.
27 29 */
28 30
29 31 #pragma weak __cos = cos
30 32
31 -/* INDENT OFF */
33 +
32 34 /*
33 35 * cos(x)
34 36 * Accurate Table look-up algorithm by K.C. Ng, May, 1995.
35 37 *
36 38 * Algorithm: see sincos.c
37 39 */
38 40
39 41 #include "libm.h"
40 42
41 43 static const double sc[] = {
42 -/* ONE = */ 1.0,
44 +/* ONE = */
45 + 1.0,
43 46 /* NONE = */ -1.0,
47 +
44 48 /*
45 49 * |sin(x) - (x+pp1*x^3+pp2*x^5)| <= 2^-58.79 for |x| < 0.008
46 50 */
47 -/* PP1 = */ -0.166666666666316558867252052378889521480627858683055567,
48 -/* PP2 = */ .008333315652997472323564894248466758248475374977974017927,
51 +/* PP1 = */-0.166666666666316558867252052378889521480627858683055567,
52 +/* PP2 = */.008333315652997472323564894248466758248475374977974017927,
53 +
49 54 /*
50 55 * |(sin(x) - (x+p1*x^3+...+p4*x^9)|
51 56 * |------------------------------ | <= 2^-57.63 for |x| < 0.1953125
52 57 * | x |
53 58 */
54 -/* P1 = */ -1.666666666666629669805215138920301589656e-0001,
55 -/* P2 = */ 8.333333332390951295683993455280336376663e-0003,
56 -/* P3 = */ -1.984126237997976692791551778230098403960e-0004,
57 -/* P4 = */ 2.753403624854277237649987622848330351110e-0006,
59 +/* P1 = */ -1.666666666666629669805215138920301589656e-0001,
60 +/* P2 = */ 8.333333332390951295683993455280336376663e-0003,
61 +/* P3 = */ -1.984126237997976692791551778230098403960e-0004,
62 +/* P4 = */ 2.753403624854277237649987622848330351110e-0006,
63 +
58 64 /*
59 65 * |cos(x) - (1+qq1*x^2+qq2*x^4)| <= 2^-55.99 for |x| <= 0.008 (0x3f80624d)
60 66 */
61 -/* QQ1 = */ -0.4999999999975492381842911981948418542742729,
62 -/* QQ2 = */ 0.041666542904352059294545209158357640398771740,
63 -/* Q1 = */ -0.5,
64 -/* Q2 = */ 4.166666666500350703680945520860748617445e-0002,
65 -/* Q3 = */ -1.388888596436972210694266290577848696006e-0003,
66 -/* Q4 = */ 2.478563078858589473679519517892953492192e-0005,
67 -/* PIO2_H = */ 1.570796326794896557999,
68 -/* PIO2_L = */ 6.123233995736765886130e-17,
69 -/* PIO2_L0 = */ 6.123233995727922165564e-17,
70 -/* PIO2_L1 = */ 8.843720566135701120255e-29,
71 -/* PI3O2_H = */ 4.712388980384689673997,
72 -/* PI3O2_L = */ 1.836970198721029765839e-16,
73 -/* PI3O2_L0 = */ 1.836970198720396133587e-16,
74 -/* PI3O2_L1 = */ 6.336322524749201142226e-29,
75 -/* PI5O2_H = */ 7.853981633974482789995,
76 -/* PI5O2_L = */ 3.061616997868382943065e-16,
77 -/* PI5O2_L0 = */ 3.061616997861941598865e-16,
78 -/* PI5O2_L1 = */ 6.441344200433640781982e-28,
67 +/* QQ1 = */-0.4999999999975492381842911981948418542742729,
68 +/* QQ2 = */0.041666542904352059294545209158357640398771740,
69 +/* Q1 = */ -0.5,
70 +/* Q2 = */ 4.166666666500350703680945520860748617445e-0002,
71 +/* Q3 = */ -1.388888596436972210694266290577848696006e-0003,
72 +/* Q4 = */ 2.478563078858589473679519517892953492192e-0005,
73 +/* PIO2_H = */ 1.570796326794896557999,
74 +/* PIO2_L = */ 6.123233995736765886130e-17,
75 +/* PIO2_L0 = */ 6.123233995727922165564e-17,
76 +/* PIO2_L1 = */ 8.843720566135701120255e-29,
77 +/* PI3O2_H = */ 4.712388980384689673997,
78 +/* PI3O2_L = */ 1.836970198721029765839e-16,
79 +/* PI3O2_L0 = */ 1.836970198720396133587e-16,
80 +/* PI3O2_L1 = */ 6.336322524749201142226e-29,
81 +/* PI5O2_H = */ 7.853981633974482789995,
82 +/* PI5O2_L = */ 3.061616997868382943065e-16,
83 +/* PI5O2_L0 = */ 3.061616997861941598865e-16,
84 +/* PI5O2_L1 = */ 6.441344200433640781982e-28,
79 85 };
80 -/* INDENT ON */
86 +
81 87
82 88 #define ONE sc[0]
83 89 #define PP1 sc[2]
84 90 #define PP2 sc[3]
85 91 #define P1 sc[4]
86 92 #define P2 sc[5]
87 93 #define P3 sc[6]
88 94 #define P4 sc[7]
89 95 #define QQ1 sc[8]
90 96 #define QQ2 sc[9]
91 97 #define Q1 sc[10]
92 98 #define Q2 sc[11]
93 99 #define Q3 sc[12]
94 100 #define Q4 sc[13]
95 101 #define PIO2_H sc[14]
96 102 #define PIO2_L sc[15]
97 103 #define PIO2_L0 sc[16]
98 104 #define PIO2_L1 sc[17]
99 105 #define PI3O2_H sc[18]
100 106 #define PI3O2_L sc[19]
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101 107 #define PI3O2_L0 sc[20]
102 108 #define PI3O2_L1 sc[21]
103 109 #define PI5O2_H sc[22]
104 110 #define PI5O2_L sc[23]
105 111 #define PI5O2_L0 sc[24]
106 112 #define PI5O2_L1 sc[25]
107 113
108 114 extern const double _TBL_sincos[], _TBL_sincosx[];
109 115
110 116 double
111 -cos(double x) {
112 - double z, y[2], w, s, v, p, q;
113 - int i, j, n, hx, ix, lx;
117 +cos(double x)
118 +{
119 + double z, y[2], w, s, v, p, q;
120 + int i, j, n, hx, ix, lx;
114 121
115 122 hx = ((int *)&x)[HIWORD];
116 123 lx = ((int *)&x)[LOWORD];
117 124 ix = hx & ~0x80000000;
118 125
119 - if (ix <= 0x3fc50000) { /* |x| < 10.5/64 = 0.164062500 */
126 + if (ix <= 0x3fc50000) { /* |x| < 10.5/64 = 0.164062500 */
120 127 if (ix < 0x3e400000) { /* |x| < 2**-27 */
121 128 if ((int)x == 0)
122 129 return (ONE);
123 130 }
131 +
124 132 z = x * x;
133 +
125 134 if (ix < 0x3f800000) /* |x| < 0.008 */
126 135 w = z * (QQ1 + z * QQ2);
127 136 else
128 137 w = z * ((Q1 + z * Q2) + (z * z) * (Q3 + z * Q4));
138 +
129 139 return (ONE + w);
130 140 }
131 141
132 142 /* for 0.164062500 < x < M, */
133 143 n = ix >> 20;
134 - if (n < 0x402) { /* x < 8 */
144 +
145 + if (n < 0x402) { /* x < 8 */
135 146 i = (((ix >> 12) & 0xff) | 0x100) >> (0x401 - n);
136 147 j = i - 10;
137 148 x = fabs(x);
138 149 v = x - _TBL_sincosx[j];
150 +
139 151 if (((j - 81) ^ (j - 101)) < 0) {
140 152 /* near pi/2, cos(pi/2-x)=sin(x) */
141 153 p = PIO2_H - x;
142 154 i = ix - 0x3ff921fb;
143 155 x = p + PIO2_L;
156 +
144 157 if ((i | ((lx - 0x54442D00) & 0xffffff00)) == 0) {
145 158 /* very close to pi/2 */
146 159 x = p + PIO2_L0;
147 160 return (x + PIO2_L1);
148 161 }
162 +
149 163 z = x * x;
164 +
150 165 if (((ix - 0x3ff92000) >> 12) == 0) {
151 166 /* |pi/2-x|<2**-8 */
152 167 w = PIO2_L + (z * x) * (PP1 + z * PP2);
153 168 } else {
154 - w = PIO2_L + (z * x) * ((P1 + z * P2) +
155 - (z * z) * (P3 + z * P4));
169 + w = PIO2_L + (z * x) * ((P1 + z * P2) + (z *
170 + z) * (P3 + z * P4));
156 171 }
172 +
157 173 return (p + w);
158 174 }
175 +
159 176 s = v * v;
177 +
160 178 if (((j - 282) ^ (j - 302)) < 0) {
161 179 /* near 3/2pi, cos(x-3/2pi)=sin(x) */
162 180 p = x - PI3O2_H;
163 181 i = ix - 0x4012D97C;
164 182 x = p - PI3O2_L;
183 +
165 184 if ((i | ((lx - 0x7f332100) & 0xffffff00)) == 0) {
166 185 /* very close to 3/2pi */
167 186 x = p - PI3O2_L0;
168 187 return (x - PI3O2_L1);
169 188 }
189 +
170 190 z = x * x;
191 +
171 192 if (((ix - 0x4012D800) >> 9) == 0) {
172 193 /* |x-3/2pi|<2**-8 */
173 194 w = (z * x) * (PP1 + z * PP2) - PI3O2_L;
174 195 } else {
175 - w = (z * x) * ((P1 + z * P2) + (z * z)
176 - * (P3 + z * P4)) - PI3O2_L;
196 + w = (z * x) * ((P1 + z * P2) + (z * z) * (P3 +
197 + z * P4)) - PI3O2_L;
177 198 }
199 +
178 200 return (p + w);
179 201 }
202 +
180 203 if (((j - 483) ^ (j - 503)) < 0) {
181 204 /* near 5pi/2, cos(5pi/2-x)=sin(x) */
182 205 p = PI5O2_H - x;
183 206 i = ix - 0x401F6A7A;
184 207 x = p + PI5O2_L;
208 +
185 209 if ((i | ((lx - 0x29553800) & 0xffffff00)) == 0) {
186 210 /* very close to pi/2 */
187 211 x = p + PI5O2_L0;
188 212 return (x + PI5O2_L1);
189 213 }
214 +
190 215 z = x * x;
216 +
191 217 if (((ix - 0x401F6A7A) >> 7) == 0) {
192 218 /* |pi/2-x|<2**-8 */
193 219 w = PI5O2_L + (z * x) * (PP1 + z * PP2);
194 220 } else {
195 - w = PI5O2_L + (z * x) * ((P1 + z * P2) +
196 - (z * z) * (P3 + z * P4));
221 + w = PI5O2_L + (z * x) * ((P1 + z * P2) + (z *
222 + z) * (P3 + z * P4));
197 223 }
224 +
198 225 return (p + w);
199 226 }
227 +
200 228 j <<= 1;
201 229 w = _TBL_sincos[j];
202 - z = _TBL_sincos[j+1];
230 + z = _TBL_sincos[j + 1];
203 231 p = v + (v * s) * (PP1 + s * PP2);
204 232 q = s * (QQ1 + s * QQ2);
205 233 return (z - (w * p - z * q));
206 234 }
207 235
208 - if (ix >= 0x7ff00000) /* cos(Inf or NaN) is NaN */
236 + if (ix >= 0x7ff00000) /* cos(Inf or NaN) is NaN */
209 237 return (x / x);
210 238
211 239 /* argument reduction needed */
212 240 n = __rem_pio2(x, y);
241 +
213 242 switch (n & 3) {
214 243 case 0:
215 244 return (__k_cos(y[0], y[1]));
216 245 case 1:
217 246 return (-__k_sin(y[0], y[1]));
218 247 case 2:
219 248 return (-__k_cos(y[0], y[1]));
220 249 default:
221 250 return (__k_sin(y[0], y[1]));
222 251 }
223 252 }
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