Only use libstdc++'s constexpr maths functions with GCC

Clang's __builtin_sqrt() etc aren't constexpr Fixes #7
tcbrindle · Jan 24, 2019 · 591fd16 · 591fd16
1 parent 8d8f006
commit 591fd16
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/raytracer.hpp b/raytracer.hpp
@@ -40,7 +40,7 @@ namespace cmath {
 
 // libstdc++ provides some constexpr math functions as an extension, so
 // use them if we can.
-#ifdef __GLIBCXX__
+#if defined(__GLIBCXX__) && !defined(__clang__)
 #define HAVE_CONSTEXPR_STD_MATH
 #endif