foo.cc: In function ‘float128 log128(float128)’:
foo.cc:12:52: error: ‘logq’ was not declared in this scope; did you mean ‘logl’?
   12 | static inline float128 log128(float128 x) { return logq(x); }
      |                                                    ^~~~
      |                                                    logl
foo.cc: In function ‘float128 exp128(float128)’:
foo.cc:13:52: error: ‘expq’ was not declared in this scope; did you mean ‘expl’?
   13 | static inline float128 exp128(float128 x) { return expq(x); }
      |                                                    ^~~~
      |                                                    expl
foo.cc: At global scope:
foo.cc:15:29: error: unable to find numeric literal operator ‘operator""Q’
   15 | const float128 LN2 = log128(2.0Q);
      |                             ^~~~
foo.cc:15:29: note: use ‘-fext-numeric-literals’ to enable more built-in suffixes
foo.cc:16:27: error: unable to find numeric literal operator ‘operator""Q’
   16 | const float128 INF_LOG = -1e30Q;
      |                           ^~~~~
foo.cc:16:27: note: use ‘-fext-numeric-literals’ to enable more built-in suffixes
foo.cc: In function ‘bool lessThan(const Value&, const Value&)’:
foo.cc:28:18: error: unable to find numeric literal operator ‘operator""Q’
   28 |     if (a.logv + 1e-15Q < b.logv) return true;
      |                  ^~~~~~
foo.cc:28:18: note: use ‘-fext-numeric-literals’ to enable more built-in suffixes
foo.cc:29:18: error: unable to find numeric literal operator ‘operator""Q’
   29 |     if (b.logv + 1e-15Q < a.logv) return false;
      |                  ^~~~~~
foo.cc:29:18: note: use ‘-fext-numeric-literals’ to enable more built-in suffixes
foo.cc: In function ‘Value add(const Value&, const Value&)’:
foo.cc:37:40: error: unable to find numeric literal operator ‘operator""Q’
   37 |     float128 log_sum = a.logv + log128(1.0Q + exp128(diff));
      |                                        ^~~~
foo.cc:37:40: note: use ‘-fext-numeric-literals’ to enable more built-in suffixes
foo.cc: In function ‘int main()’:
foo.cc:80:24: error: unable to find numeric literal operator ‘operator""Q’
   80 |     dp_prev[0] = Value(0.0Q, 0);
      |                        ^~~~
foo.cc:80:24: note: use ‘-fext-numeric-literals’ to enable more built-in suffixes
foo.cc:81:24: error: unable to find numeric literal operator ‘operator""Q’
   81 |     float128 log_pow = 0.0Q;
      |                        ^~~~
foo.cc:81:24: note: use ‘-fext-numeric-literals’ to enable more built-in suffixes
foo.cc:99:27: error: unable to find numeric literal operator ‘operator""Q’
   99 |         dp_cur[0] = Value(0.0Q, 0);
      |                           ^~~~
foo.cc:99:27: note: use ‘-fext-numeric-literals’ to enable more built-in suffixes
foo.cc:105:39: error: unable to find numeric literal operator ‘operator""Q’
  105 |                 dp_cur[cur_m] = Value(0.0Q, 1);
      |                                       ^~~~
foo.cc:105:39: note: use ‘-fext-numeric-literals’ to enable more built-in suffixes
foo.cc:132:49: error: unable to find numeric literal operator ‘operator""Q’
  132 |         if (now.modv == last.modv && now.logv + 1e-12Q > last.logv && now.logv - 1e-12Q < last.logv) {
      |                                                 ^~~~~~
foo.cc:132:49: note: use ‘-fext-numeric-literals’ to enable more built-in suffixes
foo.cc:132:82: error: unable to find numeric literal operator ‘operator""Q’
  132 |         if (now.modv == last.modv && now.logv + 1e-12Q > last.logv && now.logv - 1e-12Q < last.logv) {
      |                                                                                  ^~~~~~
foo.cc:132:82: note: use ‘-fext-numeric-literals’ to enable more built-in suffixes