End of Life Ruby 3.1 has reached end of life and gets no more fixes. Switch to Ruby 4.0 →

instance method

Numeric#abs

abs → numeric

static VALUE
num_abs(VALUE num)
{
    if (rb_num_negative_int_p(num)) {
        return num_funcall0(num, idUMinus);
    }
    return num;
}

Returns the absolute value of self.

Example

12.abs        #=> 12
(-34.56).abs  #=> 34.56
-34.56.abs    #=> 34.56

See also #<=> #abs2 #-@ #angle also in 4.1 · 4.0 · 3.4 · 3.3 · 3.2 · 3.0