From ce2f07c4fc8b6967bc1418b4ab8770393c64bc80 Mon Sep 17 00:00:00 2001
From: lloyd <lloyd@randombit.net>
Date: Mon, 26 Oct 2009 17:59:57 +0000
Subject: Add subtraction operators to SIMD_32 classes, needed for XTEA decrypt

---
 src/utils/simd_32/simd_sse.h | 10 ++++++++++
 1 file changed, 10 insertions(+)

(limited to 'src/utils/simd_32/simd_sse.h')

diff --git a/src/utils/simd_32/simd_sse.h b/src/utils/simd_32/simd_sse.h
index d9135f1c7..d2ef4b211 100644
--- a/src/utils/simd_32/simd_sse.h
+++ b/src/utils/simd_32/simd_sse.h
@@ -70,6 +70,16 @@ class SIMD_SSE2
          return _mm_add_epi32(reg, other.reg);
          }
 
+      void operator-=(const SIMD_SSE2& other)
+         {
+         reg = _mm_sub_epi32(reg, other.reg);
+         }
+
+      SIMD_SSE2 operator-(const SIMD_SSE2& other) const
+         {
+         return _mm_sub_epi32(reg, other.reg);
+         }
+
       void operator^=(const SIMD_SSE2& other)
          {
          reg = _mm_xor_si128(reg, other.reg);
-- 
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