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instance method

Numeric#arg

() -> (0 | ::Float)

arg → 0 or Math::PI

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.

See also #angle #ceil #abs2 #clone also in 4.0 · 3.4 · 3.3 · 3.2 · 3.1 · 3.0