Author: gbercea
Date: Fri May 17 12:15:53 2019
New Revision: 361066

[OpenMP][bugfix] Add missing math functions variants for log and abs.

Summary: When including the random header in C++, some of the math functions it 
relies on are not present in the CUDA headers. We include this variants in this 

Reviewers: jdoerfert, hfinkel, tra, caomhin

Reviewed By: tra

Subscribers: efriedma, guansong, cfe-commits

Tags: #clang

Differential Revision:


Modified: cfe/trunk/lib/Headers/__clang_cuda_cmath.h
--- cfe/trunk/lib/Headers/__clang_cuda_cmath.h (original)
+++ cfe/trunk/lib/Headers/__clang_cuda_cmath.h Fri May 17 12:15:53 2019
@@ -51,6 +51,11 @@ __DEVICE__ long abs(long __n) { return :
 __DEVICE__ float abs(float __x) { return ::fabsf(__x); }
 __DEVICE__ double abs(double __x) { return ::fabs(__x); }
+// TODO: remove once variat is supported.
+#if defined(_OPENMP) && defined(__cplusplus)
+__DEVICE__ const float abs(const float __x) { return ::fabsf((float)__x); }
+__DEVICE__ const double abs(const double __x) { return ::fabs((double)__x); }
 __DEVICE__ float acos(float __x) { return ::acosf(__x); }
 __DEVICE__ float asin(float __x) { return ::asinf(__x); }
 __DEVICE__ float atan(float __x) { return ::atanf(__x); }

Modified: cfe/trunk/lib/Headers/__clang_cuda_math_forward_declares.h
--- cfe/trunk/lib/Headers/__clang_cuda_math_forward_declares.h (original)
+++ cfe/trunk/lib/Headers/__clang_cuda_math_forward_declares.h Fri May 17 
12:15:53 2019
@@ -42,6 +42,14 @@ __DEVICE__ long long abs(long long);
 __DEVICE__ double abs(double);
 __DEVICE__ float abs(float);
+// While providing the CUDA declarations and definitions for math functions,
+// we may manually define additional functions.
+// TODO: Once variant is supported the additional functions will have
+// to be removed.
+#if defined(_OPENMP) && defined(__cplusplus)
+__DEVICE__ const double abs(const double);
+__DEVICE__ const float abs(const float);
 __DEVICE__ int abs(int) __NOEXCEPT;
 __DEVICE__ double acos(double);
 __DEVICE__ float acos(float);
@@ -144,6 +152,9 @@ __DEVICE__ double log2(double);
 __DEVICE__ float log2(float);
 __DEVICE__ double logb(double);
 __DEVICE__ float logb(float);
+#if defined(_OPENMP) && defined(__cplusplus)
+__DEVICE__ long double log(long double);
 __DEVICE__ double log(double);
 __DEVICE__ float log(float);
 __DEVICE__ long lrint(double);

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