From 567dfd74a5c092cec61de6b52ea239ea91b2ed46 Mon Sep 17 00:00:00 2001
From: Jake Awe <50372925+AyodeAwe@users.noreply.github.com>
Date: Thu, 8 Jun 2023 12:26:37 -0500
Subject: [PATCH] preprocessor syntax fix (#1582)

The `#if _RAFT_HAS_CUDA` references introduced in [this commit](https://github.com/rapidsai/raft/commit/6bc237fdb8cc10cacf8cbe0a2f96630a75328406) seems to have broken the `clang-tidy-check` that runs in `cugraph-ops`, as shown in the cugraph GHA logs

This PR updates all the `#if _RAFT_HAS_CUDA` references to `#if defined(_RAFT_HAS_CUDA)` as shown in the [official docs](https://en.cppreference.com/w/cpp/preprocessor/conditional).

Authors:
  - Jake Awe (https://github.com/AyodeAwe)

Approvers:
  - Corey J. Nolet (https://github.com/cjnolet)

URL: https://github.com/rapidsai/raft/pull/1582
---
 cpp/include/raft/core/math.hpp | 20 ++++++++++----------
 1 file changed, 10 insertions(+), 10 deletions(-)

diff --git a/cpp/include/raft/core/math.hpp b/cpp/include/raft/core/math.hpp
index f251c14e4a..50d5d85566 100644
--- a/cpp/include/raft/core/math.hpp
+++ b/cpp/include/raft/core/math.hpp
@@ -22,7 +22,7 @@
 
 #include <raft/core/detail/macros.hpp>
 
-#if _RAFT_HAS_CUDA
+#if defined(_RAFT_HAS_CUDA)
 #include <cuda_bf16.h>
 #include <cuda_fp16.h>
 #endif
@@ -108,7 +108,7 @@ RAFT_INLINE_FUNCTION auto cos(T x)
 #endif
 }
 
-#if _RAFT_HAS_CUDA
+#if defined(_RAFT_HAS_CUDA)
 template <typename T>
 RAFT_DEVICE_INLINE_FUNCTION typename std::enable_if_t<std::is_same_v<T, __half>, __half> cos(T x)
 {
@@ -149,7 +149,7 @@ RAFT_INLINE_FUNCTION auto sin(T x)
 #endif
 }
 
-#if _RAFT_HAS_CUDA
+#if defined(_RAFT_HAS_CUDA)
 template <typename T>
 RAFT_DEVICE_INLINE_FUNCTION typename std::enable_if_t<std::is_same_v<T, __half>, __half> sin(T x)
 {
@@ -219,7 +219,7 @@ RAFT_INLINE_FUNCTION auto exp(T x)
 #endif
 }
 
-#if _RAFT_HAS_CUDA
+#if defined(_RAFT_HAS_CUDA)
 template <typename T>
 RAFT_DEVICE_INLINE_FUNCTION typename std::enable_if_t<std::is_same_v<T, __half>, __half> exp(T x)
 {
@@ -260,7 +260,7 @@ RAFT_INLINE_FUNCTION auto log(T x)
 #endif
 }
 
-#if _RAFT_HAS_CUDA
+#if defined(_RAFT_HAS_CUDA)
 template <typename T>
 RAFT_DEVICE_INLINE_FUNCTION typename std::enable_if_t<std::is_same_v<T, __half>, __half> log(T x)
 {
@@ -339,7 +339,7 @@ RAFT_INLINE_FUNCTION auto max(const T1& x, const T2& y)
 #endif
 }
 
-#if _RAFT_HAS_CUDA
+#if defined(_RAFT_HAS_CUDA)
 template <typename T>
 RAFT_DEVICE_INLINE_FUNCTION typename std::enable_if_t<std::is_same_v<T, __half>, __half> max(T x,
                                                                                              T y)
@@ -381,7 +381,7 @@ constexpr RAFT_INLINE_FUNCTION auto max(const T& x)
   return x;
 }
 
-#if _RAFT_HAS_CUDA
+#if defined(_RAFT_HAS_CUDA)
 template <typename T>
 RAFT_DEVICE_INLINE_FUNCTION typename std::enable_if_t<std::is_same_v<T, __half>, __half> max(T x)
 {
@@ -461,7 +461,7 @@ RAFT_INLINE_FUNCTION auto min(const T1& x, const T2& y)
 #endif
 }
 
-#if _RAFT_HAS_CUDA
+#if defined(_RAFT_HAS_CUDA)
 template <typename T>
 RAFT_DEVICE_INLINE_FUNCTION typename std::enable_if_t<std::is_same_v<T, __half>, __half> min(T x,
                                                                                              T y)
@@ -503,7 +503,7 @@ constexpr RAFT_INLINE_FUNCTION auto min(const T& x)
   return x;
 }
 
-#if _RAFT_HAS_CUDA
+#if defined(_RAFT_HAS_CUDA)
 template <typename T>
 RAFT_DEVICE_INLINE_FUNCTION typename std::enable_if_t<std::is_same_v<T, nv_bfloat16>, __half> min(
   T x)
@@ -561,7 +561,7 @@ RAFT_INLINE_FUNCTION auto sqrt(T x)
 #endif
 }
 
-#if _RAFT_HAS_CUDA
+#if defined(_RAFT_HAS_CUDA)
 template <typename T>
 RAFT_DEVICE_INLINE_FUNCTION typename std::enable_if_t<std::is_same_v<T, __half>, __half> sqrt(T x)
 {