removing unnecessary steps in nimMul64by64To128()

rockcavera · Mar 21, 2024 · a9f23f2 · a9f23f2
1 parent ba55734
commit a9f23f2
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Showing 2 changed files with 2 additions and 4 deletions.
diff --git a/nint128.nimble b/nint128.nimble
@@ -1,6 +1,6 @@
 # Package
 
-version       = "0.3.2"
+version       = "0.3.3"
 author        = "rockcavera"
 description   = "128-bit integers"
 license       = "MIT"

diff --git a/src/nint128/arithmetic/multiplication.nim b/src/nint128/arithmetic/multiplication.nim
@@ -18,10 +18,8 @@ func nimMul64by64To128(a, b: uint64): UInt128 {.inline.} =
   result.lo = tmp and 0xFFFFFFFF'u64
   tmp = tmp shr 32
   tmp += aHi * bLo
-  result.lo = ((tmp and 0xFFFFFFFF'u64) shl 32) or result.lo
   result.hi = tmp shr 32
-  tmp = result.lo shr 32
-  result.lo = result.lo and 0xFFFFFFFF'u64
+  tmp = tmp and 0xFFFFFFFF'u64
   tmp += bHi * aLo
   result.lo = ((tmp and 0xFFFFFFFF'u64) shl 32) or result.lo
   result.hi += tmp shr 32