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add a 4x4 inverse case which is not handled by the current

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ei_compute_inverse_in_size4_case (reported by mikola on IRC)
This commit is contained in:
Gael Guennebaud 2009-04-09 21:55:29 +00:00
parent ea41a18b80
commit 22edf77470
1 changed files with 6 additions and 0 deletions
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6
test/inverse.cpp
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@ -77,4 +77,10 @@ void test_inverse()
CALL_SUBTEST( inverse(MatrixXf(8,8)) ); CALL_SUBTEST( inverse(MatrixXf(8,8)) );
CALL_SUBTEST( inverse(MatrixXcd(7,7)) ); CALL_SUBTEST( inverse(MatrixXcd(7,7)) );
} }
// test some tricky cases for 4x4 matrices
VERIFY_IS_APPROX((Matrix4f() << 0,0,1,0, 1,0,0,0, 0,1,0,0, 0,0,0,1).finished().inverse(),
(Matrix4f() << 0,1,0,0, 0,0,1,0, 1,0,0,0, 0,0,0,1).finished());
VERIFY_IS_APPROX((Matrix4f() << 1,0,0,0, 0,0,1,0, 0,0,0,1, 0,1,0,0).finished().inverse(),
(Matrix4f() << 1,0,0,0, 0,0,0,1, 0,1,0,0, 0,0,1,0).finished());
} }