#579 plot2d(tan(x),[x,-%Pi, %Pi]);

[Ben Levitt]

In 5.9.0 on both windows and linux:

plot2d(sin(x),[x,-%Pi, %Pi]); works as expected, and
produces a pretty sine wave.

But plot2d(tan(x),[x,-%Pi, %Pi]); just grinds the cpu
and never seems to return. :(

[Raymond Toy]

Logged In: YES
user_id=28849

Fixed in cvs.