[libc-commits] [libc] [libc][math][c23] Add {getpayload, setpayload, setpayloadsig}f16 C23 math functions (PR #95159)

[via libc-commits]

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@@ -265,6 +265,48 @@ totalordermag(T x, T y) {
   return FPBits<T>(x).abs().uintval() <= FPBits<T>(y).abs().uintval();
 }
 
+template <typename T>
+LIBC_INLINE cpp::enable_if_t<cpp::is_floating_point_v<T>, T> getpayload(T x) {
+  using FPBits = FPBits<T>;
+  FPBits x_bits(x);
+
+  if (!x_bits.is_nan())
+    return T(-1.0);
+
+  return T(x_bits.uintval() & (FPBits::FRACTION_MASK >> 1));
+}
+
+template <bool IsSignaling, typename T>
+LIBC_INLINE cpp::enable_if_t<cpp::is_floating_point_v<T>, bool>
+setpayload(T *res, T pl) {
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lntue wrote:

change to `T& res`

https://github.com/llvm/llvm-project/pull/95159