End of Life Ruby 3.2 has reached end of life and gets no more fixes. Switch to Ruby 4.0 →
instance method
BigDecimal#hash
hash → integer
ext/bigdecimal/bigdecimal.c
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static VALUE
BigDecimal_hash(VALUE self)
{
ENTER(1);
Real *p;
st_index_t hash;
GUARD_OBJ(p, GetVpValue(self, 1));
hash = (st_index_t)p->sign;
/* hash!=2: the case for 0(1),NaN(0) or +-Infinity(3) is sign itself */
if(hash == 2 || hash == (st_index_t)-2) {
hash ^= rb_memhash(p->frac, sizeof(DECDIG)*p->Prec);
hash += p->exponent;
}
return ST2FIX(hash);
}
Returns the integer hash value for self.
Two instances of BigDecimal have the same hash value if and only if they have equal:
-
Sign.
-
Fractional part.
-
Exponent.