karm-math: Disable long double _bigfrac literal.

Author: sleepy-monax

src/karm-math/bigint.cpp

@@ -698,6 +698,8 @@ export Karm::Math::BigFrac operator""_bigfrac(unsigned long long value) {
     return Karm::Math::BigFrac{static_cast<Karm::usize>(value)};
 }
 
-export Karm::Math::BigFrac operator""_bigfrac(long double value) {
-    return Karm::Math::BigFrac{static_cast<Karm::f64>(value)};
-}
+// NOTE: Most target don't like long double literals, so we disable them
+//       for now. We can re-enable them later when we have a better solution for cross-compilation.
+// export Karm::Math::BigFrac operator""_bigfrac(long double value) {
+//     return Karm::Math::BigFrac{static_cast<Karm::f64>(value)};
+// }