[libc-commits] [libc] [libc][NFC] Introduce a Sign type for FPBits (PR #78500)

[Clement Courbet via libc-commits]

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@@ -437,7 +438,7 @@ LLVM_LIBC_FUNCTION(double, expm1, (double x)) {
 
   double lo = fputil::multiply_add(p, mid_lo, hi_part.lo);
 
-  uint64_t err = x_sign ? (static_cast<uint64_t>(-hi) << 52) : 0;
+  uint64_t err = x_is_neg ? (static_cast<uint64_t>(-hi) << 52) : 0;
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legrosbuffle wrote:

This seems to break the encoding abstraction. Let's add a FIXME.

https://github.com/llvm/llvm-project/pull/78500