From bc9409daba5ad76765434de639c6c66d583b3dce Mon Sep 17 00:00:00 2001
From: Timo Kreuzer <timo.kreuzer@reactos.org>
Date: Fri, 15 Jul 2022 18:51:20 +0200
Subject: [PATCH] [CRT] Add round and roundf and add it to msvcrtex to make
 clang v14 happy

---
 sdk/include/crt/math.h     |  3 +++
 sdk/lib/crt/math/round.c   | 16 ++++++++++++++++
 sdk/lib/crt/math/roundf.c  | 16 ++++++++++++++++
 sdk/lib/crt/msvcrtex.cmake |  2 ++
 4 files changed, 37 insertions(+)
 create mode 100644 sdk/lib/crt/math/round.c
 create mode 100644 sdk/lib/crt/math/roundf.c

diff --git a/sdk/include/crt/math.h b/sdk/include/crt/math.h
index ce896484cd7..80aafd21d9c 100644
--- a/sdk/include/crt/math.h
+++ b/sdk/include/crt/math.h
@@ -275,6 +275,8 @@ _Check_return_ long lrintf(_In_ float x);
 _Check_return_ long lrintl(_In_ long double x);
 #pragma function(lrint, lrintf, lrintl)
 #endif
+
+#ifndef _CRTBLD
 _Check_return_ __CRT_INLINE double round(_In_ double x) { return (x < 0) ? ceil(x - 0.5f) : floor(x + 0.5); }
 _Check_return_ __CRT_INLINE float roundf(_In_ float x) { return (x < 0) ? ceilf(x - 0.5f) : floorf(x + 0.5); }
 _Check_return_ __CRT_INLINE long double roundl(_In_ long double x) { return (x < 0) ? ceill(x - 0.5f) : floorl(x + 0.5); }
@@ -294,6 +296,7 @@ _Check_return_ __CRT_INLINE long long llrint(_In_ double x) { return (long long)
 _Check_return_ __CRT_INLINE long long llrintf(_In_ float x) { return (long long)((x < 0) ? (x - 0.5f) : (x + 0.5)); }
 _Check_return_ __CRT_INLINE long long llrintl(_In_ long double x) { return (long long)((x < 0) ? (x - 0.5f) : (x + 0.5)); }
 _Check_return_ __CRT_INLINE double log2(_In_ double x) { return log(x) / log(2); }
+#endif /* !_CRTBLD */
 
 #ifndef NO_OLDNAMES /* !__STDC__ */
 
diff --git a/sdk/lib/crt/math/round.c b/sdk/lib/crt/math/round.c
new file mode 100644
index 00000000000..36eec2dd776
--- /dev/null
+++ b/sdk/lib/crt/math/round.c
@@ -0,0 +1,16 @@
+/*
+ * COPYRIGHT:       BSD - See COPYING.ARM in the top level directory
+ * PROJECT:         ReactOS CRT library
+ * PURPOSE:         Portable implementation of round
+ * PROGRAMMER:      Timo Kreuzer (timo.kreuzer@reactos.org)
+ */
+
+#include <math.h>
+
+double round(double arg)
+{
+    if (arg < 0.0)
+        return ceil(arg - 0.5);
+    else
+        return floor(arg + 0.5);
+}
diff --git a/sdk/lib/crt/math/roundf.c b/sdk/lib/crt/math/roundf.c
new file mode 100644
index 00000000000..454484a649e
--- /dev/null
+++ b/sdk/lib/crt/math/roundf.c
@@ -0,0 +1,16 @@
+/*
+ * COPYRIGHT:       BSD - See COPYING.ARM in the top level directory
+ * PROJECT:         ReactOS CRT library
+ * PURPOSE:         Portable implementation of roundf
+ * PROGRAMMER:      Timo Kreuzer (timo.kreuzer@reactos.org)
+ */
+
+#include <math.h>
+
+float roundf(float arg)
+{
+    if (arg < 0.0)
+        return ceilf(arg - 0.5);
+    else
+        return floorf(arg + 0.5);
+}
diff --git a/sdk/lib/crt/msvcrtex.cmake b/sdk/lib/crt/msvcrtex.cmake
index e8acbd7e2ca..272d844252e 100644
--- a/sdk/lib/crt/msvcrtex.cmake
+++ b/sdk/lib/crt/msvcrtex.cmake
@@ -13,6 +13,8 @@ list(APPEND MSVCRTEX_SOURCE
 if(CMAKE_C_COMPILER_ID STREQUAL "Clang")
     # Clang performs some optimizations requiring those funtions
     list(APPEND MSVCRTEX_SOURCE
+        math/round.c
+        math/roundf.c
         math/exp2.c
         math/exp2f.c
         )