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Functions | |
| double | det (const mat &m) |
| mat | inv (const mat &m) |
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return its determinant Definition at line 3 of file mat-calc.hpp. Referenced by inv(). 00004 {
00005 return
00006 m.xx*m.yy*m.zz + m.xy*m.yz*m.zx + m.xz*m.yx*m.zy
00007 -m.xx*m.yz*m.zy -m.xy*m.yx*m.zz -m.xz*m.yy*m.zx;
00008 }
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return its inverse matrix Definition at line 12 of file mat-calc.hpp. References det(). Referenced by operator/(). 00013 {
00014 double d( det(m) );
00015 return mat
00016 (
00017 (m.yy*m.zz-m.yz*m.zy)/d, (m.xz*m.zy-m.xy*m.zz)/d, (m.xy*m.yz-m.xz*m.yy)/d,
00018 (m.yz*m.zx-m.yx*m.zz)/d, (m.xx*m.zz-m.xz*m.zx)/d, (m.xz*m.yx-m.xx*m.yz)/d,
00019 (m.yx*m.zy-m.yy*m.zx)/d, (m.xy*m.zx-m.xx*m.zy)/d, (m.xx*m.yy-m.xy*m.yx)/d
00020 );
00021 }
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1.4.1