Merge pull request #2060 from KrzysztofCwalina/BigIntegerOptimization

stephentoub · stephentoub · commit 9b24cf639b42 · 2015-06-15T20:32:31.000-04:00
Small optimization in BigInteger
diff --git a/src/System.Runtime.Numerics/src/System/Numerics/BigNumber.cs b/src/System.Runtime.Numerics/src/System/Numerics/BigNumber.cs
@@ -432,10 +432,11 @@ private unsafe static Boolean NumberToBigInteger(ref BigNumberBuffer number, ref
             Int32 i = number.scale;
             Int32 cur = 0;
 
+            BigInteger ten = 10;
             value = 0;
             while (--i >= 0)
             {
-                value *= 10;
+                value *= ten;
                 if (number.digits[cur] != '\0')
                 {
                     value += (Int32)(number.digits[cur++] - '0');

Original file line number	Diff line number	Diff line change
`@@ -432,10 +432,11 @@ private unsafe static Boolean NumberToBigInteger(ref BigNumberBuffer number, ref`
`432`	`432`	`Int32 i = number.scale;`
`433`	`433`	`Int32 cur = 0;`
`434`	`434`
	`435`	`+ BigInteger ten = 10;`
`435`	`436`	`value = 0;`
`436`	`437`	`while (--i >= 0)`
`437`	`438`	`{`
`438`		`- value *= 10;`
	`439`	`+ value *= ten;`
`439`	`440`	`if (number.digits[cur] != '\0')`
`440`	`441`	`{`
`441`	`442`	`value += (Int32)(number.digits[cur++] - '0');`