Update comment on fast_multiply_add

madmann91 · Aug 11, 2024 · 66e445b · 66e445b
1 parent ce037a7
commit 66e445b
Showing 1 changed file with 3 additions and 1 deletion.
diff --git a/src/bvh/v2/utils.h b/src/bvh/v2/utils.h
@@ -62,7 +62,9 @@ BVH_ALWAYS_INLINE T safe_inverse(T x) {
         : static_cast<T>(1.) / x;
 }
 
-/// Fast multiply-add operation. Should translate into an FMA for architectures that support it.
+/// Fast multiply-add operation. Should translate into an FMA for architectures that support it. On
+/// architectures which do not support FMA in hardware, or on which FMA is slow, this defaults to a
+/// regular multiplication followed by an addition.
 #if defined(_MSC_VER) && !defined(__clang__)
 #pragma float_control(push)
 #pragma float_control(precise, off)