glm::clamp and NaN's

[BartSiwek]

The clamp function seems to handle NaN's in a bad manner. Result of

glm::clamp(std::numeric_limits<float>::quite_NaN(), a, b)

is b while it should be a NaN.

This can be fixed by modifying the clamp function. Now its

return max(min(x, maxVal), minVal)

It should be

return min(maxVal, max(minVal, x));

[Groovounet]

This bug is now fixed in GLM 0.9.4 branch for GLM 0.9.4.1 released.

Thanks for contributing!
Christophe