[libc-commits] [libc] [libc] Remove constexpr from asin_eval() (PR #151528)

via libc-commits libc-commits at lists.llvm.org
Thu Jul 31 07:33:34 PDT 2025


llvmbot wrote:


<!--LLVM PR SUMMARY COMMENT-->

@llvm/pr-subscribers-libc

Author: William Huynh (saturn691)

<details>
<summary>Changes</summary>

fputil::multiply_add is conditionally constexpr, on some architectures, it selects the non-constexpr version, resulting in a compile error.

---
Full diff: https://github.com/llvm/llvm-project/pull/151528.diff


1 Files Affected:

- (modified) libc/src/__support/math/asin_utils.h (+1-1) 


``````````diff
diff --git a/libc/src/__support/math/asin_utils.h b/libc/src/__support/math/asin_utils.h
index e0c9096e2bb78..efe779c8a81fd 100644
--- a/libc/src/__support/math/asin_utils.h
+++ b/libc/src/__support/math/asin_utils.h
@@ -45,7 +45,7 @@ static constexpr double ASIN_COEFFS[12] = {
     0x1.2b5993bda1d9bp-6, -0x1.806aff270bf25p-7, 0x1.02614e5ed3936p-5,
 };
 
-LIBC_INLINE static constexpr double asin_eval(double u) {
+LIBC_INLINE double asin_eval(double u) {
   double u2 = u * u;
   double c0 = fputil::multiply_add(u, ASIN_COEFFS[1], ASIN_COEFFS[0]);
   double c1 = fputil::multiply_add(u, ASIN_COEFFS[3], ASIN_COEFFS[2]);

``````````

</details>


https://github.com/llvm/llvm-project/pull/151528


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