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Side by Side Diff: fusl/src/math/__sinl.c

Issue 1714623002: [fusl] clang-format fusl (Closed) Base URL: git@github.com:domokit/mojo.git@master
Patch Set: headers too Created 4 years, 10 months ago
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1 /* origin: FreeBSD /usr/src/lib/msun/ld80/k_sinl.c */ 1 /* origin: FreeBSD /usr/src/lib/msun/ld80/k_sinl.c */
2 /* origin: FreeBSD /usr/src/lib/msun/ld128/k_sinl.c */ 2 /* origin: FreeBSD /usr/src/lib/msun/ld128/k_sinl.c */
3 /* 3 /*
4 * ==================================================== 4 * ====================================================
5 * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved. 5 * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
6 * Copyright (c) 2008 Steven G. Kargl, David Schultz, Bruce D. Evans. 6 * Copyright (c) 2008 Steven G. Kargl, David Schultz, Bruce D. Evans.
7 * 7 *
8 * Developed at SunSoft, a Sun Microsystems, Inc. business. 8 * Developed at SunSoft, a Sun Microsystems, Inc. business.
9 * Permission to use, copy, modify, and distribute this 9 * Permission to use, copy, modify, and distribute this
10 * software is freely granted, provided that this notice 10 * software is freely granted, provided that this notice
11 * is preserved. 11 * is preserved.
12 * ==================================================== 12 * ====================================================
13 */ 13 */
14 14
15 #include "libm.h" 15 #include "libm.h"
16 16
17 #if (LDBL_MANT_DIG == 64 || LDBL_MANT_DIG == 113) && LDBL_MAX_EXP == 16384 17 #if (LDBL_MANT_DIG == 64 || LDBL_MANT_DIG == 113) && LDBL_MAX_EXP == 16384
18 #if LDBL_MANT_DIG == 64 18 #if LDBL_MANT_DIG == 64
19 /* 19 /*
20 * ld80 version of __sin.c. See __sin.c for most comments. 20 * ld80 version of __sin.c. See __sin.c for most comments.
21 */ 21 */
22 /* 22 /*
23 * Domain [-0.7854, 0.7854], range ~[-1.89e-22, 1.915e-22] 23 * Domain [-0.7854, 0.7854], range ~[-1.89e-22, 1.915e-22]
24 * |sin(x)/x - s(x)| < 2**-72.1 24 * |sin(x)/x - s(x)| < 2**-72.1
25 * 25 *
26 * See __cosl.c for more details about the polynomial. 26 * See __cosl.c for more details about the polynomial.
27 */ 27 */
28 static const long double 28 static const long double S1 =
29 S1 = -0.166666666666666666671L; /* -0xaaaaaaaaaaaaaaab.0p-66 */ 29 -0.166666666666666666671L; /* -0xaaaaaaaaaaaaaaab.0p-66 */
30 static const double 30 static const double S2 = 0.0083333333333333332, /* 0x11111111111111.0p-59 */
31 S2 = 0.0083333333333333332, /* 0x11111111111111.0p-59 */ 31 S3 = -0.00019841269841269427, /* -0x1a01a01a019f81.0p-65 */
32 S3 = -0.00019841269841269427, /* -0x1a01a01a019f81.0p-65 */ 32 S4 = 0.0000027557319223597490, /* 0x171de3a55560f7.0p-71 */
33 S4 = 0.0000027557319223597490, /* 0x171de3a55560f7.0p-71 */ 33 S5 = -0.000000025052108218074604, /* -0x1ae64564f16cad.0p-78 */
34 S5 = -0.000000025052108218074604, /* -0x1ae64564f16cad.0p-78 */ 34 S6 = 1.6059006598854211e-10, /* 0x161242b90243b5.0p-85 */
35 S6 = 1.6059006598854211e-10, /* 0x161242b90243b5.0p-85 */ 35 S7 = -7.6429779983024564e-13, /* -0x1ae42ebd1b2e00.0p-93 */
36 S7 = -7.6429779983024564e-13, /* -0x1ae42ebd1b2e00.0p-93 */ 36 S8 = 2.6174587166648325e-15; /* 0x179372ea0b3f64.0p-101 */
37 S8 = 2.6174587166648325e-15; /* 0x179372ea0b3f64.0p-101 */ 37 #define POLY(z) \
38 #define POLY(z) (S2+z*(S3+z*(S4+z*(S5+z*(S6+z*(S7+z*S8)))))) 38 (S2 + z * (S3 + z * (S4 + z * (S5 + z * (S6 + z * (S7 + z * S8))))))
39 #elif LDBL_MANT_DIG == 113 39 #elif LDBL_MANT_DIG == 113
40 /* 40 /*
41 * ld128 version of __sin.c. See __sin.c for most comments. 41 * ld128 version of __sin.c. See __sin.c for most comments.
42 */ 42 */
43 /* 43 /*
44 * Domain [-0.7854, 0.7854], range ~[-1.53e-37, 1.659e-37] 44 * Domain [-0.7854, 0.7854], range ~[-1.53e-37, 1.659e-37]
45 * |sin(x)/x - s(x)| < 2**-122.1 45 * |sin(x)/x - s(x)| < 2**-122.1
46 * 46 *
47 * See __cosl.c for more details about the polynomial. 47 * See __cosl.c for more details about the polynomial.
48 */ 48 */
49 static const long double 49 static const long double
50 S1 = -0.16666666666666666666666666666666666606732416116558L, 50 S1 = -0.16666666666666666666666666666666666606732416116558L,
51 S2 = 0.0083333333333333333333333333333331135404851288270047L, 51 S2 = 0.0083333333333333333333333333333331135404851288270047L,
52 S3 = -0.00019841269841269841269841269839935785325638310428717L, 52 S3 = -0.00019841269841269841269841269839935785325638310428717L,
53 S4 = 0.27557319223985890652557316053039946268333231205686e-5L, 53 S4 = 0.27557319223985890652557316053039946268333231205686e-5L,
54 S5 = -0.25052108385441718775048214826384312253862930064745e-7L, 54 S5 = -0.25052108385441718775048214826384312253862930064745e-7L,
55 S6 = 0.16059043836821614596571832194524392581082444805729e-9L, 55 S6 = 0.16059043836821614596571832194524392581082444805729e-9L,
56 S7 = -0.76471637318198151807063387954939213287488216303768e-12L, 56 S7 = -0.76471637318198151807063387954939213287488216303768e-12L,
57 S8 = 0.28114572543451292625024967174638477283187397621303e-14L; 57 S8 = 0.28114572543451292625024967174638477283187397621303e-14L;
58 static const double 58 static const double
59 S9 = -0.82206352458348947812512122163446202498005154296863e-17, 59 S9 = -0.82206352458348947812512122163446202498005154296863e-17,
60 S10 = 0.19572940011906109418080609928334380560135358385256e-19, 60 S10 = 0.19572940011906109418080609928334380560135358385256e-19,
61 S11 = -0.38680813379701966970673724299207480965452616911420e-22, 61 S11 = -0.38680813379701966970673724299207480965452616911420e-22,
62 S12 = 0.64038150078671872796678569586315881020659912139412e-25; 62 S12 = 0.64038150078671872796678569586315881020659912139412e-25;
63 #define POLY(z) (S2+z*(S3+z*(S4+z*(S5+z*(S6+z*(S7+z*(S8+ \ 63 #define POLY(z) \
64 » z*(S9+z*(S10+z*(S11+z*S12)))))))))) 64 (S2 + \
65 z * (S3 + \
66 z * (S4 + \
67 z * (S5 + \
68 z * (S6 + \
69 z * (S7 + \
70 z * (S8 + \
71 z * (S9 + \
72 z * (S10 + z * (S11 + z * S12))))))))))
65 #endif 73 #endif
66 74
67 long double __sinl(long double x, long double y, int iy) 75 long double __sinl(long double x, long double y, int iy) {
68 { 76 long double z, r, v;
69 » long double z,r,v;
70 77
71 » z = x*x; 78 z = x * x;
72 » v = z*x; 79 v = z * x;
73 » r = POLY(z); 80 r = POLY(z);
74 » if (iy == 0) 81 if (iy == 0)
75 » » return x+v*(S1+z*r); 82 return x + v * (S1 + z * r);
76 » return x-((z*(0.5*y-v*r)-y)-v*S1); 83 return x - ((z * (0.5 * y - v * r) - y) - v * S1);
77 } 84 }
78 #endif 85 #endif
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