From aabdff2cc9b21e71ac15c972d9d4ffebc8db0210 Mon Sep 17 00:00:00 2001
From: XMRig <support@xmrig.com>
Date: Wed, 6 Feb 2019 00:38:55 +0700
Subject: [PATCH] Fixed floating-point rounding, resolved conflict between cn/2
 and cn/gpu. Thanks @SChernykh.

---
 src/crypto/CryptoNight_arm.h | 2 ++
 src/crypto/CryptoNight_x86.h | 6 ++++++
 2 files changed, 8 insertions(+)

diff --git a/src/crypto/CryptoNight_arm.h b/src/crypto/CryptoNight_arm.h
index 456b5d74..add7f746 100644
--- a/src/crypto/CryptoNight_arm.h
+++ b/src/crypto/CryptoNight_arm.h
@@ -586,6 +586,8 @@ inline void cryptonight_single_hash_gpu(const uint8_t *__restrict__ input, size_
     xmrig::keccak(input, size, ctx[0]->state);
     cn_explode_scratchpad_gpu<ALGO, MEM>(ctx[0]->state, ctx[0]->memory);
 
+    fesetround(FE_TONEAREST);
+
     cn_gpu_inner_arm<ITERATIONS, MASK>(ctx[0]->state, ctx[0]->memory);
 
     cn_implode_scratchpad<xmrig::CRYPTONIGHT_HEAVY, MEM, SOFT_AES>((__m128i*) ctx[0]->memory, (__m128i*) ctx[0]->state);
diff --git a/src/crypto/CryptoNight_x86.h b/src/crypto/CryptoNight_x86.h
index 2d1aef0d..1ae7b795 100644
--- a/src/crypto/CryptoNight_x86.h
+++ b/src/crypto/CryptoNight_x86.h
@@ -616,6 +616,12 @@ inline void cryptonight_single_hash_gpu(const uint8_t *__restrict__ input, size_
     xmrig::keccak(input, size, ctx[0]->state);
     cn_explode_scratchpad_gpu<ALGO, MEM>(ctx[0]->state, ctx[0]->memory);
 
+#   ifdef _MSC_VER
+    _control87(RC_NEAR, MCW_RC);
+#   else
+    fesetround(FE_TONEAREST);
+#   endif
+
     if (xmrig::Cpu::info()->hasAVX2()) {
         cn_gpu_inner_avx<ITERATIONS, MASK>(ctx[0]->state, ctx[0]->memory);
     } else {