Maintenance Ruby 3.3 gets fixes, but no new features. Switch to Ruby 4.0 →
instance method
Numeric#arg
arg → 0 or Math::PI
complex.c
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static VALUE
numeric_arg(VALUE self)
{
if (f_positive_p(self))
return INT2FIX(0);
return DBL2NUM(M_PI);
}
Returns zero if self is positive, Math::PI otherwise.