End of Life Ruby 3.0 has reached end of life and gets no more fixes. Switch to Ruby 4.0 →

instance method

Float#-@

-float → float

VALUE
rb_float_uminus(VALUE flt)
{
    return DBL2NUM(-RFLOAT_VALUE(flt));
}

Returns float, negated.

See also #- #/ #+ #< also in 4.1 · 4.0 · 3.4 · 3.3 · 3.2 · 3.1