From e4635c36a0cb5d16cd98a6273099612eadc8b5e3 Mon Sep 17 00:00:00 2001
From: streamhsa <sandeep.kumar@amd.com>
Date: Tue, 2 Feb 2016 15:05:46 +0530
Subject: [PATCH] ADDED Support for __ffs() and __ffsll() having signed input
 -sandeep

[ROCm/hip commit: 23904df99bad23d1d0ee5d99b83cd69baea1956b]
---
 projects/hip/include/hcc_detail/hip_runtime.h | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/projects/hip/include/hcc_detail/hip_runtime.h b/projects/hip/include/hcc_detail/hip_runtime.h
index 734596a476..62386a14a2 100644
--- a/projects/hip/include/hcc_detail/hip_runtime.h
+++ b/projects/hip/include/hcc_detail/hip_runtime.h
@@ -325,6 +325,16 @@ __device__ inline unsigned int __ffsll(unsigned long long int input)
 	return hc::__lastbit_u32_u64( input)+1;
 }
 
+__device__ inline unsigned int __ffs(int input) 
+{
+	return hc::__lastbit_u32_s32( input)+1;
+}
+
+__device__ inline unsigned int __ffsll(long long int input) 
+{
+	return hc::__lastbit_u32_s64( input)+1;
+}
+
 __device__ inline unsigned int __brev( unsigned int input) 
 {
 	return hc::__bitrev_b32( input);