diff --git a/src/Reactor/LLVMReactor.cpp b/src/Reactor/LLVMReactor.cpp
index d105d3e..f31119e 100644
--- a/src/Reactor/LLVMReactor.cpp
+++ b/src/Reactor/LLVMReactor.cpp
@@ -563,6 +563,7 @@
 			func_.emplace("coshf", reinterpret_cast<void*>(coshf));
 			func_.emplace("tanhf", reinterpret_cast<void*>(tanhf));
 			func_.emplace("asinhf", reinterpret_cast<void*>(asinhf));
+			func_.emplace("acoshf", reinterpret_cast<void*>(acoshf));
 
 #ifdef __APPLE__
 			// LLVM uses this function on macOS for tan.
@@ -3144,6 +3145,11 @@
 		return TransformFloat4PerElement(v, "asinhf");
 	}
 
+	RValue<Float4> Acosh(RValue<Float4> v)
+	{
+		return TransformFloat4PerElement(v, "acoshf");
+	}
+
 	Type *Float4::getType()
 	{
 		return T(llvm::VectorType::get(T(Float::getType()), 4));