source: Sophya/trunk/Poubelle/archTOI.old/trigtbl.h@ 529

Last change on this file since 529 was 394, checked in by ansari, 26 years ago

Integration detecteur d'etoiles DY
File size: 6.4 KB
Line 
1/*
2** Please only distribute this with it's associated FHT routine.
3** This algorithm is apparently patented(!) and the code copyrighted.
4** See the comment with the fht routine for more info.
5** -Thanks,
6** Ron Mayer
7*/
8
9#ifdef REAL
10#else
11#define REAL double
12#endif
13
14#ifdef GOOD_TRIG
15#else
16#define FAST_TRIG
17#endif
18
19#if defined(GOOD_TRIG)
20#define FHT_SWAP(a,b,t) {(t)=(a);(a)=(b);(b)=(t);}
21#define TRIG_VARS \
22 int t_lam=0;
23#define TRIG_INIT(k,c,s) \
24 { \
25 int i; \
26 for (i=2 ; i<=k ; i++) \
27 {coswrk[i]=costab[i];sinwrk[i]=sintab[i];} \
28 t_lam = 0; \
29 c = 1; \
30 s = 0; \
31 }
32#define TRIG_NEXT(k,c,s) \
33 { \
34 int i,j; \
35 (t_lam)++; \
36 for (i=0 ; !((1<<i)&t_lam) ; i++); \
37 i = k-i; \
38 s = sinwrk[i]; \
39 c = coswrk[i]; \
40 if (i>1) \
41 { \
42 for (j=k-i+2 ; (1<<j)&t_lam ; j++); \
43 j = k - j; \
44 sinwrk[i] = halsec[i] * (sinwrk[i-1] + sinwrk[j]); \
45 coswrk[i] = halsec[i] * (coswrk[i-1] + coswrk[j]); \
46 } \
47 }
48#define TRIG_RESET(k,c,s)
49#endif
50
51#if defined(FAST_TRIG)
52#define TRIG_VARS \
53 REAL t_c,t_s;
54#define TRIG_INIT(k,c,s) \
55 { \
56 t_c = costab[k]; \
57 t_s = sintab[k]; \
58 c = 1; \
59 s = 0; \
60 }
61#define TRIG_NEXT(k,c,s) \
62 { \
63 REAL t = c; \
64 c = t*t_c - s*t_s; \
65 s = t*t_s + s*t_c; \
66 }
67#define TRIG_RESET(k,c,s)
68#endif
69
70static REAL halsec[20]=
71 {
72 0,
73 0,
74 .54119610014619698439972320536638942006107206337801,
75 .50979557910415916894193980398784391368261849190893,
76 .50241928618815570551167011928012092247859337193963,
77 .50060299823519630134550410676638239611758632599591,
78 .50015063602065098821477101271097658495974913010340,
79 .50003765191554772296778139077905492847503165398345,
80 .50000941253588775676512870469186533538523133757983,
81 .50000235310628608051401267171204408939326297376426,
82 .50000058827484117879868526730916804925780637276181,
83 .50000014706860214875463798283871198206179118093251,
84 .50000003676714377807315864400643020315103490883972,
85 .50000000919178552207366560348853455333939112569380,
86 .50000000229794635411562887767906868558991922348920,
87 .50000000057448658687873302235147272458812263401372
88 };
89static REAL costab[20]=
90 {
91 .00000000000000000000000000000000000000000000000000,
92 .70710678118654752440084436210484903928483593768847,
93 .92387953251128675612818318939678828682241662586364,
94 .98078528040323044912618223613423903697393373089333,
95 .99518472667219688624483695310947992157547486872985,
96 .99879545620517239271477160475910069444320361470461,
97 .99969881869620422011576564966617219685006108125772,
98 .99992470183914454092164649119638322435060646880221,
99 .99998117528260114265699043772856771617391725094433,
100 .99999529380957617151158012570011989955298763362218,
101 .99999882345170190992902571017152601904826792288976,
102 .99999970586288221916022821773876567711626389934930,
103 .99999992646571785114473148070738785694820115568892,
104 .99999998161642929380834691540290971450507605124278,
105 .99999999540410731289097193313960614895889430318945,
106 .99999999885102682756267330779455410840053741619428
107 };
108static REAL sintab[20]=
109 {
110 1.0000000000000000000000000000000000000000000000000,
111 .70710678118654752440084436210484903928483593768846,
112 .38268343236508977172845998403039886676134456248561,
113 .19509032201612826784828486847702224092769161775195,
114 .09801714032956060199419556388864184586113667316749,
115 .04906767432741801425495497694268265831474536302574,
116 .02454122852291228803173452945928292506546611923944,
117 .01227153828571992607940826195100321214037231959176,
118 .00613588464915447535964023459037258091705788631738,
119 .00306795676296597627014536549091984251894461021344,
120 .00153398018628476561230369715026407907995486457522,
121 .00076699031874270452693856835794857664314091945205,
122 .00038349518757139558907246168118138126339502603495,
123 .00019174759731070330743990956198900093346887403385,
124 .00009587379909597734587051721097647635118706561284,
125 .00004793689960306688454900399049465887274686668768
126 };
127static REAL coswrk[20]=
128 {
129 .00000000000000000000000000000000000000000000000000,
130 .70710678118654752440084436210484903928483593768847,
131 .92387953251128675612818318939678828682241662586364,
132 .98078528040323044912618223613423903697393373089333,
133 .99518472667219688624483695310947992157547486872985,
134 .99879545620517239271477160475910069444320361470461,
135 .99969881869620422011576564966617219685006108125772,
136 .99992470183914454092164649119638322435060646880221,
137 .99998117528260114265699043772856771617391725094433,
138 .99999529380957617151158012570011989955298763362218,
139 .99999882345170190992902571017152601904826792288976,
140 .99999970586288221916022821773876567711626389934930,
141 .99999992646571785114473148070738785694820115568892,
142 .99999998161642929380834691540290971450507605124278,
143 .99999999540410731289097193313960614895889430318945,
144 .99999999885102682756267330779455410840053741619428
145 };
146static REAL sinwrk[20]=
147 {
148 1.0000000000000000000000000000000000000000000000000,
149 .70710678118654752440084436210484903928483593768846,
150 .38268343236508977172845998403039886676134456248561,
151 .19509032201612826784828486847702224092769161775195,
152 .09801714032956060199419556388864184586113667316749,
153 .04906767432741801425495497694268265831474536302574,
154 .02454122852291228803173452945928292506546611923944,
155 .01227153828571992607940826195100321214037231959176,
156 .00613588464915447535964023459037258091705788631738,
157 .00306795676296597627014536549091984251894461021344,
158 .00153398018628476561230369715026407907995486457522,
159 .00076699031874270452693856835794857664314091945205,
160 .00038349518757139558907246168118138126339502603495,
161 .00019174759731070330743990956198900093346887403385,
162 .00009587379909597734587051721097647635118706561284,
163 .00004793689960306688454900399049465887274686668768
164 };
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