glm::axisAngle returns NaN

[Morloth1274]

When given certain rotation matrixes, the glm::axisAngle function sometimes returns the right rotation vector but the angle is NaN. The rotation matrix in question is:

[1 0 -0.0174559 0 ]
[0 1 0 0 ]
[0.0174559 0 1 0 ]
[0 0 0 1 ]

Which gives the rotation vector: (0, -1, 0) and the angle: NaN.

Here is the test code:
glm bug.cpp.txt

When I translate the rotation matrix to a quaternion it works just fine and returns the right values.

[Groovounet]

This issue should be fixed in master branch.

Thanks for reporting,
Christophe