[llvm] LangRef: Rephrase fma description to avoid referring to libm (PR #92729)

[via llvm-commits]

llvmbot wrote:


<!--LLVM PR SUMMARY COMMENT-->

@llvm/pr-subscribers-llvm-ir

Author: Matt Arsenault (arsenm)

<details>
<summary>Changes</summary>



---
Full diff: https://github.com/llvm/llvm-project/pull/92729.diff


1 Files Affected:

- (modified) llvm/docs/LangRef.rst (+2-2) 


``````````diff
diff --git a/llvm/docs/LangRef.rst b/llvm/docs/LangRef.rst
index e2f4d8bfcaeed..936a402b18ed0 100644
--- a/llvm/docs/LangRef.rst
+++ b/llvm/docs/LangRef.rst
@@ -15757,8 +15757,8 @@ The arguments and return value are floating-point numbers of the same type.
 Semantics:
 """"""""""
 
-Return the same value as a corresponding libm '``fma``' function but without
-trapping or setting ``errno``.
+Return the same value as the IEEE-754 fusedMultiplyAdd operation. This
+is assumed to not trap or set ``errno``.
 
 When specified with the fast-math-flag 'afn', the result may be approximated
 using a less accurate calculation.

``````````

</details>


https://github.com/llvm/llvm-project/pull/92729