End of Life Ruby 3.2 has reached end of life and gets no more fixes. Switch to Ruby 4.0 →
instance method
BigDecimal#+
self + value → bigdecimal
ext/bigdecimal/bigdecimal.c
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static VALUE
BigDecimal_add(VALUE self, VALUE r)
{
ENTER(5);
Real *c, *a, *b;
size_t mx;
GUARD_OBJ(a, GetVpValue(self, 1));
if (RB_TYPE_P(r, T_FLOAT)) {
b = GetVpValueWithPrec(r, 0, 1);
}
else if (RB_TYPE_P(r, T_RATIONAL)) {
b = GetVpValueWithPrec(r, a->Prec*VpBaseFig(), 1);
}
else {
b = GetVpValue(r, 0);
}
if (!b) return DoSomeOne(self,r,'+');
SAVE(b);
if (VpIsNaN(b)) return b->obj;
if (VpIsNaN(a)) return a->obj;
mx = GetAddSubPrec(a, b);
if (mx == (size_t)-1L) {
GUARD_OBJ(c, NewZeroWrapLimited(1, VpBaseFig() + 1));
VpAddSub(c, a, b, 1);
}
else {
GUARD_OBJ(c, NewZeroWrapLimited(1, mx * (VpBaseFig() + 1)));
if (!mx) {
VpSetInf(c, VpGetSign(a));
}
else {
VpAddSub(c, a, b, 1);
}
}
return VpCheckGetValue(c);
}
Returns the BigDecimal sum of self and value:
Example
b = BigDecimal('111111.111') # => 0.111111111e6 b + 2 # => 0.111113111e6 b + 2.0 # => 0.111113111e6 b + Rational(2, 1) # => 0.111113111e6 b + Complex(2, 0) # => (0.111113111e6+0i)
See the Note About Precision.