1 // Copyright (c) 1999
2 // Utrecht University (The Netherlands),
3 // ETH Zurich (Switzerland),
4 // INRIA Sophia-Antipolis (France),
5 // Max-Planck-Institute Saarbruecken (Germany),
6 // and Tel-Aviv University (Israel). All rights reserved.
7 //
8 // This file is part of CGAL (www.cgal.org)
9 //
10 // $URL: https://github.com/CGAL/cgal/blob/v5.3/Kernel_23/include/CGAL/determinant.h $
11 // $Id: determinant.h cb08f67 2020-05-12T11:56:18+02:00 Mael Rouxel-Labbé
12 // SPDX-License-Identifier: LGPL-3.0-or-later OR LicenseRef-Commercial
13 //
14 //
15 // Author(s) : Sylvain Pion
16 // Stefan Schirra
17
18 #ifndef CGAL_DETERMINANT_H
19 #define CGAL_DETERMINANT_H
20
21 #include <CGAL/kernel_config.h>
22
23 namespace CGAL {
24
25 template <class RT>
26 inline
27 RT
determinant(const RT & a00,const RT & a01,const RT & a10,const RT & a11)28 determinant(
29 const RT& a00, const RT& a01,
30 const RT& a10, const RT& a11)
31 {
32 // First compute the det2x2
33 const RT m01 = a00*a11 - a10*a01;
34 return m01;
35 }
36
37 template <class RT>
38 CGAL_KERNEL_MEDIUM_INLINE
39 RT
determinant(const RT & a00,const RT & a01,const RT & a02,const RT & a10,const RT & a11,const RT & a12,const RT & a20,const RT & a21,const RT & a22)40 determinant(
41 const RT& a00, const RT& a01, const RT& a02,
42 const RT& a10, const RT& a11, const RT& a12,
43 const RT& a20, const RT& a21, const RT& a22)
44 {
45 // First compute the det2x2
46 const RT m01 = a00*a11 - a10*a01;
47 const RT m02 = a00*a21 - a20*a01;
48 const RT m12 = a10*a21 - a20*a11;
49 // Now compute the minors of rank 3
50 const RT m012 = m01*a22 - m02*a12 + m12*a02;
51 return m012;
52 }
53
54 template <class RT>
55 CGAL_KERNEL_LARGE_INLINE
56 RT
determinant(const RT & a00,const RT & a01,const RT & a02,const RT & a03,const RT & a10,const RT & a11,const RT & a12,const RT & a13,const RT & a20,const RT & a21,const RT & a22,const RT & a23,const RT & a30,const RT & a31,const RT & a32,const RT & a33)57 determinant(
58 const RT& a00, const RT& a01, const RT& a02, const RT& a03,
59 const RT& a10, const RT& a11, const RT& a12, const RT& a13,
60 const RT& a20, const RT& a21, const RT& a22, const RT& a23,
61 const RT& a30, const RT& a31, const RT& a32, const RT& a33)
62 {
63 // First compute the det2x2
64 const RT m01 = a10*a01 - a00*a11;
65 const RT m02 = a20*a01 - a00*a21;
66 const RT m03 = a30*a01 - a00*a31;
67 const RT m12 = a20*a11 - a10*a21;
68 const RT m13 = a30*a11 - a10*a31;
69 const RT m23 = a30*a21 - a20*a31;
70 // Now compute the minors of rank 3
71 const RT m012 = m12*a02 - m02*a12 + m01*a22;
72 const RT m013 = m13*a02 - m03*a12 + m01*a32;
73 const RT m023 = m23*a02 - m03*a22 + m02*a32;
74 const RT m123 = m23*a12 - m13*a22 + m12*a32;
75 // Now compute the minors of rank 4
76 const RT m0123 = m123*a03 - m023*a13 + m013*a23 - m012*a33;
77 return m0123;
78 }
79
80 template <class RT>
81 CGAL_KERNEL_LARGE_INLINE
82 RT
determinant(const RT & a00,const RT & a01,const RT & a02,const RT & a03,const RT & a04,const RT & a10,const RT & a11,const RT & a12,const RT & a13,const RT & a14,const RT & a20,const RT & a21,const RT & a22,const RT & a23,const RT & a24,const RT & a30,const RT & a31,const RT & a32,const RT & a33,const RT & a34,const RT & a40,const RT & a41,const RT & a42,const RT & a43,const RT & a44)83 determinant(
84 const RT& a00, const RT& a01, const RT& a02, const RT& a03, const RT& a04,
85 const RT& a10, const RT& a11, const RT& a12, const RT& a13, const RT& a14,
86 const RT& a20, const RT& a21, const RT& a22, const RT& a23, const RT& a24,
87 const RT& a30, const RT& a31, const RT& a32, const RT& a33, const RT& a34,
88 const RT& a40, const RT& a41, const RT& a42, const RT& a43, const RT& a44)
89 {
90 // First compute the det2x2
91 const RT m01 = a10*a01 - a00*a11;
92 const RT m02 = a20*a01 - a00*a21;
93 const RT m03 = a30*a01 - a00*a31;
94 const RT m04 = a40*a01 - a00*a41;
95 const RT m12 = a20*a11 - a10*a21;
96 const RT m13 = a30*a11 - a10*a31;
97 const RT m14 = a40*a11 - a10*a41;
98 const RT m23 = a30*a21 - a20*a31;
99 const RT m24 = a40*a21 - a20*a41;
100 const RT m34 = a40*a31 - a30*a41;
101 // Now compute the minors of rank 3
102 const RT m012 = m12*a02 - m02*a12 + m01*a22;
103 const RT m013 = m13*a02 - m03*a12 + m01*a32;
104 const RT m014 = m14*a02 - m04*a12 + m01*a42;
105 const RT m023 = m23*a02 - m03*a22 + m02*a32;
106 const RT m024 = m24*a02 - m04*a22 + m02*a42;
107 const RT m034 = m34*a02 - m04*a32 + m03*a42;
108 const RT m123 = m23*a12 - m13*a22 + m12*a32;
109 const RT m124 = m24*a12 - m14*a22 + m12*a42;
110 const RT m134 = m34*a12 - m14*a32 + m13*a42;
111 const RT m234 = m34*a22 - m24*a32 + m23*a42;
112 // Now compute the minors of rank 4
113 const RT m0123 = m123*a03 - m023*a13 + m013*a23 - m012*a33;
114 const RT m0124 = m124*a03 - m024*a13 + m014*a23 - m012*a43;
115 const RT m0134 = m134*a03 - m034*a13 + m014*a33 - m013*a43;
116 const RT m0234 = m234*a03 - m034*a23 + m024*a33 - m023*a43;
117 const RT m1234 = m234*a13 - m134*a23 + m124*a33 - m123*a43;
118 // Now compute the minors of rank 5
119 const RT m01234 = m1234*a04 - m0234*a14 + m0134*a24 - m0124*a34 + m0123*a44;
120 return m01234;
121 }
122
123 template <class RT>
124 RT
determinant(const RT & a00,const RT & a01,const RT & a02,const RT & a03,const RT & a04,const RT & a05,const RT & a10,const RT & a11,const RT & a12,const RT & a13,const RT & a14,const RT & a15,const RT & a20,const RT & a21,const RT & a22,const RT & a23,const RT & a24,const RT & a25,const RT & a30,const RT & a31,const RT & a32,const RT & a33,const RT & a34,const RT & a35,const RT & a40,const RT & a41,const RT & a42,const RT & a43,const RT & a44,const RT & a45,const RT & a50,const RT & a51,const RT & a52,const RT & a53,const RT & a54,const RT & a55)125 determinant(
126 const RT& a00, const RT& a01, const RT& a02, const RT& a03, const RT& a04,
127 const RT& a05,
128 const RT& a10, const RT& a11, const RT& a12, const RT& a13, const RT& a14,
129 const RT& a15,
130 const RT& a20, const RT& a21, const RT& a22, const RT& a23, const RT& a24,
131 const RT& a25,
132 const RT& a30, const RT& a31, const RT& a32, const RT& a33, const RT& a34,
133 const RT& a35,
134 const RT& a40, const RT& a41, const RT& a42, const RT& a43, const RT& a44,
135 const RT& a45,
136 const RT& a50, const RT& a51, const RT& a52, const RT& a53, const RT& a54,
137 const RT& a55)
138 {
139 // First compute the det2x2
140 const RT m01 = a00*a11 - a10*a01;
141 const RT m02 = a00*a21 - a20*a01;
142 const RT m03 = a00*a31 - a30*a01;
143 const RT m04 = a00*a41 - a40*a01;
144 const RT m05 = a00*a51 - a50*a01;
145 const RT m12 = a10*a21 - a20*a11;
146 const RT m13 = a10*a31 - a30*a11;
147 const RT m14 = a10*a41 - a40*a11;
148 const RT m15 = a10*a51 - a50*a11;
149 const RT m23 = a20*a31 - a30*a21;
150 const RT m24 = a20*a41 - a40*a21;
151 const RT m25 = a20*a51 - a50*a21;
152 const RT m34 = a30*a41 - a40*a31;
153 const RT m35 = a30*a51 - a50*a31;
154 const RT m45 = a40*a51 - a50*a41;
155 // Now compute the minors of rank 3
156 const RT m012 = m01*a22 - m02*a12 + m12*a02;
157 const RT m013 = m01*a32 - m03*a12 + m13*a02;
158 const RT m014 = m01*a42 - m04*a12 + m14*a02;
159 const RT m015 = m01*a52 - m05*a12 + m15*a02;
160 const RT m023 = m02*a32 - m03*a22 + m23*a02;
161 const RT m024 = m02*a42 - m04*a22 + m24*a02;
162 const RT m025 = m02*a52 - m05*a22 + m25*a02;
163 const RT m034 = m03*a42 - m04*a32 + m34*a02;
164 const RT m035 = m03*a52 - m05*a32 + m35*a02;
165 const RT m045 = m04*a52 - m05*a42 + m45*a02;
166 const RT m123 = m12*a32 - m13*a22 + m23*a12;
167 const RT m124 = m12*a42 - m14*a22 + m24*a12;
168 const RT m125 = m12*a52 - m15*a22 + m25*a12;
169 const RT m134 = m13*a42 - m14*a32 + m34*a12;
170 const RT m135 = m13*a52 - m15*a32 + m35*a12;
171 const RT m145 = m14*a52 - m15*a42 + m45*a12;
172 const RT m234 = m23*a42 - m24*a32 + m34*a22;
173 const RT m235 = m23*a52 - m25*a32 + m35*a22;
174 const RT m245 = m24*a52 - m25*a42 + m45*a22;
175 const RT m345 = m34*a52 - m35*a42 + m45*a32;
176 // Now compute the minors of rank 4
177 const RT m0123 = m012*a33 - m013*a23 + m023*a13 - m123*a03;
178 const RT m0124 = m012*a43 - m014*a23 + m024*a13 - m124*a03;
179 const RT m0125 = m012*a53 - m015*a23 + m025*a13 - m125*a03;
180 const RT m0134 = m013*a43 - m014*a33 + m034*a13 - m134*a03;
181 const RT m0135 = m013*a53 - m015*a33 + m035*a13 - m135*a03;
182 const RT m0145 = m014*a53 - m015*a43 + m045*a13 - m145*a03;
183 const RT m0234 = m023*a43 - m024*a33 + m034*a23 - m234*a03;
184 const RT m0235 = m023*a53 - m025*a33 + m035*a23 - m235*a03;
185 const RT m0245 = m024*a53 - m025*a43 + m045*a23 - m245*a03;
186 const RT m0345 = m034*a53 - m035*a43 + m045*a33 - m345*a03;
187 const RT m1234 = m123*a43 - m124*a33 + m134*a23 - m234*a13;
188 const RT m1235 = m123*a53 - m125*a33 + m135*a23 - m235*a13;
189 const RT m1245 = m124*a53 - m125*a43 + m145*a23 - m245*a13;
190 const RT m1345 = m134*a53 - m135*a43 + m145*a33 - m345*a13;
191 const RT m2345 = m234*a53 - m235*a43 + m245*a33 - m345*a23;
192 // Now compute the minors of rank 5
193 const RT m01234 = m0123*a44 - m0124*a34 + m0134*a24 - m0234*a14 + m1234*a04;
194 const RT m01235 = m0123*a54 - m0125*a34 + m0135*a24 - m0235*a14 + m1235*a04;
195 const RT m01245 = m0124*a54 - m0125*a44 + m0145*a24 - m0245*a14 + m1245*a04;
196 const RT m01345 = m0134*a54 - m0135*a44 + m0145*a34 - m0345*a14 + m1345*a04;
197 const RT m02345 = m0234*a54 - m0235*a44 + m0245*a34 - m0345*a24 + m2345*a04;
198 const RT m12345 = m1234*a54 - m1235*a44 + m1245*a34 - m1345*a24 + m2345*a14;
199 // Now compute the minors of rank 6
200 const RT m012345 = m01234*a55 - m01235*a45 + m01245*a35 - m01345*a25
201 + m02345*a15 - m12345*a05;
202 return m012345;
203 }
204
205 template <class RT>
206 RT
determinant(const RT & a00,const RT & a01,const RT & a02,const RT & a03,const RT & a04,const RT & a05,const RT & a06,const RT & a10,const RT & a11,const RT & a12,const RT & a13,const RT & a14,const RT & a15,const RT & a16,const RT & a20,const RT & a21,const RT & a22,const RT & a23,const RT & a24,const RT & a25,const RT & a26,const RT & a30,const RT & a31,const RT & a32,const RT & a33,const RT & a34,const RT & a35,const RT & a36,const RT & a40,const RT & a41,const RT & a42,const RT & a43,const RT & a44,const RT & a45,const RT & a46,const RT & a50,const RT & a51,const RT & a52,const RT & a53,const RT & a54,const RT & a55,const RT & a56,const RT & a60,const RT & a61,const RT & a62,const RT & a63,const RT & a64,const RT & a65,const RT & a66)207 determinant(
208 const RT& a00, const RT& a01, const RT& a02, const RT& a03, const RT& a04, const RT& a05, const RT& a06,
209 const RT& a10, const RT& a11, const RT& a12, const RT& a13, const RT& a14, const RT& a15, const RT& a16,
210 const RT& a20, const RT& a21, const RT& a22, const RT& a23, const RT& a24, const RT& a25, const RT& a26,
211 const RT& a30, const RT& a31, const RT& a32, const RT& a33, const RT& a34, const RT& a35, const RT& a36,
212 const RT& a40, const RT& a41, const RT& a42, const RT& a43, const RT& a44, const RT& a45, const RT& a46,
213 const RT& a50, const RT& a51, const RT& a52, const RT& a53, const RT& a54, const RT& a55, const RT& a56,
214 const RT& a60, const RT& a61, const RT& a62, const RT& a63, const RT& a64, const RT& a65, const RT& a66)
215 {
216 // First compute the det2x2
217 const RT m01 = a00*a11 - a10*a01;
218 const RT m02 = a00*a21 - a20*a01;
219 const RT m03 = a00*a31 - a30*a01;
220 const RT m04 = a00*a41 - a40*a01;
221 const RT m05 = a00*a51 - a50*a01;
222 const RT m06 = a00*a61 - a60*a01;
223
224 const RT m12 = a10*a21 - a20*a11;
225 const RT m13 = a10*a31 - a30*a11;
226 const RT m14 = a10*a41 - a40*a11;
227 const RT m15 = a10*a51 - a50*a11;
228 const RT m16 = a10*a61 - a60*a11;
229
230 const RT m23 = a20*a31 - a30*a21;
231 const RT m24 = a20*a41 - a40*a21;
232 const RT m25 = a20*a51 - a50*a21;
233 const RT m26 = a20*a61 - a60*a21;
234
235 const RT m34 = a30*a41 - a40*a31;
236 const RT m35 = a30*a51 - a50*a31;
237 const RT m36 = a30*a61 - a60*a31;
238
239 const RT m45 = a40*a51 - a50*a41;
240 const RT m46 = a40*a61 - a60*a41;
241
242 const RT m56 = a50*a61 - a60*a51;
243
244 // Now compute the minors of rank 3
245 const RT m012 = m01*a22 - m02*a12 + m12*a02;
246 const RT m013 = m01*a32 - m03*a12 + m13*a02;
247 const RT m014 = m01*a42 - m04*a12 + m14*a02;
248 const RT m015 = m01*a52 - m05*a12 + m15*a02;
249 const RT m016 = m01*a62 - m06*a12 + m16*a02;
250
251 const RT m023 = m02*a32 - m03*a22 + m23*a02;
252 const RT m024 = m02*a42 - m04*a22 + m24*a02;
253 const RT m025 = m02*a52 - m05*a22 + m25*a02;
254 const RT m026 = m02*a62 - m06*a22 + m26*a02;
255 const RT m034 = m03*a42 - m04*a32 + m34*a02;
256 const RT m035 = m03*a52 - m05*a32 + m35*a02;
257 const RT m036 = m03*a62 - m06*a32 + m36*a02;
258
259 const RT m045 = m04*a52 - m05*a42 + m45*a02;
260 const RT m046 = m04*a62 - m06*a42 + m46*a02;
261
262 const RT m056 = m05*a62 - m06*a52 + m56*a02;
263
264
265 const RT m123 = m12*a32 - m13*a22 + m23*a12;
266 const RT m124 = m12*a42 - m14*a22 + m24*a12;
267 const RT m125 = m12*a52 - m15*a22 + m25*a12;
268 const RT m126 = m12*a62 - m16*a22 + m26*a12;
269
270 const RT m134 = m13*a42 - m14*a32 + m34*a12;
271 const RT m135 = m13*a52 - m15*a32 + m35*a12;
272 const RT m136 = m13*a62 - m16*a32 + m36*a12;
273
274 const RT m145 = m14*a52 - m15*a42 + m45*a12;
275 const RT m146 = m14*a62 - m16*a42 + m46*a12;
276
277 const RT m156 = m15*a62 - m16*a52 + m56*a12;
278
279 const RT m234 = m23*a42 - m24*a32 + m34*a22;
280 const RT m235 = m23*a52 - m25*a32 + m35*a22;
281 const RT m236 = m23*a62 - m26*a32 + m36*a22;
282
283 const RT m245 = m24*a52 - m25*a42 + m45*a22;
284 const RT m246 = m24*a62 - m26*a42 + m46*a22;
285
286 const RT m256 = m25*a62 - m26*a52 + m56*a22;
287
288 const RT m345 = m34*a52 - m35*a42 + m45*a32;
289 const RT m346 = m34*a62 - m36*a42 + m46*a32;
290
291 const RT m356 = m35*a62 - m36*a52 + m56*a32;
292
293 const RT m456 = m45*a62 - m46*a52 + m56*a42;
294
295 // Now compute the minors of rank 4
296 const RT m0123 = m012*a33 - m013*a23 + m023*a13 - m123*a03;
297
298 const RT m0124 = m012*a43 - m014*a23 + m024*a13 - m124*a03;
299 const RT m0125 = m012*a53 - m015*a23 + m025*a13 - m125*a03;
300 const RT m0126 = m012*a63 - m016*a23 + m026*a13 - m126*a03;
301
302 const RT m0134 = m013*a43 - m014*a33 + m034*a13 - m134*a03;
303 const RT m0135 = m013*a53 - m015*a33 + m035*a13 - m135*a03;
304 const RT m0136 = m013*a63 - m016*a33 + m036*a13 - m136*a03;
305
306 const RT m0145 = m014*a53 - m015*a43 + m045*a13 - m145*a03;
307 const RT m0146 = m014*a63 - m016*a43 + m046*a13 - m146*a03;
308
309 const RT m0156 = m015*a63 - m016*a53 + m056*a13 - m156*a03;
310
311 const RT m0234 = m023*a43 - m024*a33 + m034*a23 - m234*a03;
312 const RT m0235 = m023*a53 - m025*a33 + m035*a23 - m235*a03;
313 const RT m0236 = m023*a63 - m026*a33 + m036*a23 - m236*a03;
314
315 const RT m0245 = m024*a53 - m025*a43 + m045*a23 - m245*a03;
316 const RT m0246 = m024*a63 - m026*a43 + m046*a23 - m246*a03;
317
318 const RT m0256 = m025*a63 - m026*a53 + m056*a23 - m256*a03;
319
320 const RT m0345 = m034*a53 - m035*a43 + m045*a33 - m345*a03;
321 const RT m0346 = m034*a63 - m036*a43 + m046*a33 - m346*a03;
322
323 const RT m0356 = m035*a63 - m036*a53 + m056*a33 - m356*a03;
324
325 const RT m0456 = m045*a63 - m046*a53 + m056*a43 - m456*a03;
326
327 const RT m1234 = m123*a43 - m124*a33 + m134*a23 - m234*a13;
328 const RT m1235 = m123*a53 - m125*a33 + m135*a23 - m235*a13;
329 const RT m1236 = m123*a63 - m126*a33 + m136*a23 - m236*a13;
330
331 const RT m1245 = m124*a53 - m125*a43 + m145*a23 - m245*a13;
332 const RT m1246 = m124*a63 - m126*a43 + m146*a23 - m246*a13;
333
334 const RT m1256 = m125*a63 - m126*a53 + m156*a23 - m256*a13;
335
336 const RT m1345 = m134*a53 - m135*a43 + m145*a33 - m345*a13;
337 const RT m1346 = m134*a63 - m136*a43 + m146*a33 - m346*a13;
338
339 const RT m1356 = m135*a63 - m136*a53 + m156*a33 - m356*a13;
340 const RT m1456 = m145*a63 - m146*a53 + m156*a43 - m456*a13;
341
342 const RT m2345 = m234*a53 - m235*a43 + m245*a33 - m345*a23;
343 const RT m2346 = m234*a63 - m236*a43 + m246*a33 - m346*a23;
344
345 const RT m2356 = m235*a63 - m236*a53 + m256*a33 - m356*a23;
346 const RT m2456 = m245*a63 - m246*a53 + m256*a43 - m456*a23;
347
348 const RT m3456 = m345*a63 - m346*a53 + m356*a43 - m456*a33;
349
350
351 // Now compute the minors of rank 5
352 const RT m01234 = m0123*a44 - m0124*a34 + m0134*a24 - m0234*a14 + m1234*a04;
353
354 const RT m01235 = m0123*a54 - m0125*a34 + m0135*a24 - m0235*a14 + m1235*a04;
355
356 const RT m01236 = m0123*a64 - m0126*a34 + m0136*a24 - m0236*a14 + m1236*a04;
357
358 const RT m01245 = m0124*a54 - m0125*a44 + m0145*a24 - m0245*a14 + m1245*a04;
359 const RT m01246 = m0124*a64 - m0126*a44 + m0146*a24 - m0246*a14 + m1246*a04;
360
361 const RT m01256 = m0125*a64 - m0126*a54 + m0156*a24 - m0256*a14 + m1256*a04;
362
363 const RT m01345 = m0134*a54 - m0135*a44 + m0145*a34 - m0345*a14 + m1345*a04;
364 const RT m01346 = m0134*a64 - m0136*a44 + m0146*a34 - m0346*a14 + m1346*a04;
365
366 const RT m01356 = m0135*a64 - m0136*a54 + m0156*a34 - m0356*a14 + m1356*a04;
367 const RT m01456 = m0145*a64 - m0146*a54 + m0156*a44 - m0456*a14 + m1456*a04;
368
369 const RT m02345 = m0234*a54 - m0235*a44 + m0245*a34 - m0345*a24 + m2345*a04;
370 const RT m02346 = m0234*a64 - m0236*a44 + m0246*a34 - m0346*a24 + m2346*a04;
371
372 const RT m02356 = m0235*a64 - m0236*a54 + m0256*a34 - m0356*a24 + m2356*a04;
373 const RT m02456 = m0245*a64 - m0246*a54 + m0256*a44 - m0456*a24 + m2456*a04;
374 const RT m03456 = m0345*a64 - m0346*a54 + m0356*a44 - m0456*a34 + m3456*a04;
375
376 const RT m12345 = m1234*a54 - m1235*a44 + m1245*a34 - m1345*a24 + m2345*a14;
377 const RT m12346 = m1234*a64 - m1236*a44 + m1246*a34 - m1346*a24 + m2346*a14;
378
379
380 const RT m12356 = m1235*a64 - m1236*a54 + m1256*a34 - m1356*a24 + m2356*a14;
381 const RT m12456 = m1245*a64 - m1246*a54 + m1256*a44 - m1456*a24 + m2456*a14;
382 const RT m13456 = m1345*a64 - m1346*a54 + m1356*a44 - m1456*a34 + m3456*a14;
383
384 const RT m23456 = m2345*a64 - m2346*a54 + m2356*a44 - m2456*a34 + m3456*a24;
385
386 // Now compute the minors of rank 6
387 const RT m012345 = m01234*a55 - m01235*a45 + m01245*a35 - m01345*a25 + m02345*a15 - m12345*a05;
388 const RT m012346 = m01234*a65 - m01236*a45 + m01246*a35 - m01346*a25 + m02346*a15 - m12346*a05;
389 const RT m012356 = m01235*a65 - m01236*a55 + m01256*a35 - m01356*a25 + m02356*a15 - m12356*a05;
390 const RT m012456 = m01245*a65 - m01246*a55 + m01256*a45 - m01456*a25 + m02456*a15 - m12456*a05;
391 const RT m013456 = m01345*a65 - m01346*a55 + m01356*a45 - m01456*a35 + m03456*a15 - m13456*a05;
392 const RT m023456 = m02345*a65 - m02346*a55 + m02356*a45 - m02456*a35 + m03456*a25 - m23456*a05;
393 const RT m123456 = m12345*a65 - m12346*a55 + m12356*a45 - m12456*a35 + m13456*a25 - m23456*a15;
394
395
396 // Now compute the minors of rank 7
397 const RT m0123456 = m012345 * a66 - m012346 * a56 + m012356 * a46 - m012456 * a36 + m013456 * a26 - m023456 * a16 + m123456 * a06;
398
399 return m0123456;
400 }
401
402
403 } //namespace CGAL
404
405 #endif // CGAL_DETERMINANT_H
406