[libc-commits] [libc] [libc][math][c23] Add {ldexp, scalbn, scalbln}f16 C23 math functions (PR #94797)

[via libc-commits]

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@@ -186,8 +186,10 @@ LIBC_INLINE constexpr T ldexp(T x, int exp) {
   }
 
   // For all other values, NormalFloat to T conversion handles it the right way.
-  DyadicFloat<FPBits<T>::STORAGE_LEN> normal(bits.get_val());
-  normal.exponent += exp;
+  DyadicFloat<cpp::max(FPBits<T>::STORAGE_LEN, 32)> normal(bits.get_val());
+  // Make sure that exp fits into an int when not taking the fast paths above.
+  static_assert(EXP_LIMIT <= INT_MAX && -EXP_LIMIT >= INT_MIN);
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lntue wrote:

Move the `static_assert` to right after `EXP_LIMIT`'s definition.

https://github.com/llvm/llvm-project/pull/94797