Further simplify previous patch

mcostalba · mcostalba · commit 14aebe2b7ce1 · 2013-12-26T12:08:23.000+01:00
Use a single XOR instead of NEGATE + AND

No functional change.
diff --git a/src/pawns.cpp b/src/pawns.cpp
@@ -188,7 +188,7 @@ namespace {
     // to file distance between left and right outermost pawns.
     if (pos.count<PAWN>(Us) > 1)
     {
-        b = ~e->semiopenFiles[Us] & 0xFF;
+        b = e->semiopenFiles[Us] ^ 0xFF;
         value += PawnsFileSpan * int(msb(b) - lsb(b));
     }
 

Original file line number	Diff line number	Diff line change
`@@ -188,7 +188,7 @@ namespace {`
`188`	`188`	`// to file distance between left and right outermost pawns.`
`189`	`189`	`if (pos.count<PAWN>(Us) > 1)`
`190`	`190`	`{`
`191`		`- b = ~e->semiopenFiles[Us] & 0xFF;`
	`191`	`+ b = e->semiopenFiles[Us] ^ 0xFF;`
`192`	`192`	`value += PawnsFileSpan * int(msb(b) - lsb(b));`
`193`	`193`	`}`
`194`	`194`