ssemath: Unify RotateRight2 with other Rotate* implementations

dimhotepus · mastercoms · commit f2925ec79c89 · 2025-02-22T20:10:33.000-05:00
Just easier to read and matches other Rotate* APIs.
No behavior changes thought.
diff --git a/src/public/mathlib/ssemath.h b/src/public/mathlib/ssemath.h
@@ -1988,7 +1988,7 @@ FORCEINLINE fltx4 RotateRight( const fltx4 & a )
 // a b c d -> c d a b
 FORCEINLINE fltx4 RotateRight2( const fltx4 & a )
 {
-	return _mm_shuffle_ps( a, a, _MM_SHUFFLE( 1, 0, 3, 2 ) );
+	return _mm_shuffle_ps( a, a, MM_SHUFFLE_REV( 2, 3, 0, 1 ) );
 }
 
 

Original file line number	Diff line number	Diff line change
`@@ -1988,7 +1988,7 @@ FORCEINLINE fltx4 RotateRight( const fltx4 & a )`
`1988`	`1988`	`// a b c d -> c d a b`
`1989`	`1989`	`FORCEINLINE fltx4 RotateRight2( const fltx4 & a )`
`1990`	`1990`	`{`
`1991`		`- return _mm_shuffle_ps( a, a, _MM_SHUFFLE( 1, 0, 3, 2 ) );`
	`1991`	`+ return _mm_shuffle_ps( a, a, MM_SHUFFLE_REV( 2, 3, 0, 1 ) );`
`1992`	`1992`	`}`
`1993`	`1993`
`1994`	`1994`