tan
_DEFINE_EXPR_UNARY_FUNCTION(tan)
trans_affine(1.0, std::tan(y), std::tan(x), 1.0, 0.0, 0.0)
MAPM_1aryFunc(tan)
MAPM_1aryFunc(tan)
extern double tan(double x);
return BAffineTransform(1.0, tan(y), tan(x), 1.0, 0.0, 0.0);
return _ParseFactorial(values[0].tan());
t = tan(y);
return tan(x);
float y = (float)tan(angle);
float x = (float)tan(angle);