What is the correct way to "fix" the following doctest failure? Here, G
is the result of a gram_schmidt() computation, hence the sign shouldn't
matter mathematically.
sage -t -force_lib devel/sage/sage/matrix/matrix2.pyx
**********************************************************************
File
"/Users/jdemeyer/sage-5.0.beta1-gcc/devel/sage-main/sage/matrix/matrix2.pyx",
line 7983:
sage: G.round(6)
Expected:
[-0.422243 - 0.490087*I 0.566698 - 0.097416*I -0.500882 + 0.002251*I]
[-0.057002 - 0.495035*I -0.35059 - 0.625323*I 0.255514 - 0.415284*I]
[ 0.394105 - 0.421778*I -0.392266 - 0.039345*I -0.352905 + 0.62195*I]
Got:
[ 0.422243 + 0.490087*I -0.566698 + 0.097416*I 0.500882 - 0.002251*I]
[ 0.057002 + 0.495035*I 0.35059 + 0.625323*I -0.255514 + 0.415284*I]
[-0.394105 + 0.421778*I 0.392266 + 0.039345*I 0.352905 - 0.62195*I]
**********************************************************************
(this happens on OS X 10.7 systems, at least with a custom GCC, see #12456)
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