Update 4-at-a-time APIs.

tests/PMFloatTest.cpp

+/*
+ * Copyright 2015 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
 #include "SkPMFloat.h"
 #include "Test.h"
 
 DEF_TEST(SkPMFloat, r) {
     // Test SkPMColor <-> SkPMFloat
     SkPMColor c = SkPreMultiplyColor(0xFFCC9933);
     SkPMFloat pmf(c);
     REPORTER_ASSERT(r, SkScalarNearlyEqual(255.0f, pmf.a()));
     REPORTER_ASSERT(r, SkScalarNearlyEqual(204.0f, pmf.r()));
     REPORTER_ASSERT(r, SkScalarNearlyEqual(153.0f, pmf.g()));
@@ skipping 15 matching lines @@
     Sk4f fs = clamped;
     SkPMFloat scaled = fs * Sk4f(0.25f);
     REPORTER_ASSERT(r, SkScalarNearlyEqual(63.75f, scaled.a()));
     REPORTER_ASSERT(r, SkScalarNearlyEqual(38.25f, scaled.r()));
     REPORTER_ASSERT(r, SkScalarNearlyEqual( 0.25f, scaled.g()));
     REPORTER_ASSERT(r, SkScalarNearlyEqual( 0.00f, scaled.b()));
 
     // Test 4-at-a-time conversions.
     SkPMColor colors[4] = { 0xFF000000, 0xFFFF0000, 0xFF00FF00, 0xFF0000FF };
     SkPMFloat floats[4];
-    SkPMFloat::From4PMColors(floats, colors);
+    SkPMFloat::From4PMColors(colors, floats+0, floats+1, floats+2, floats+3);
 
     SkPMColor back[4];
-    SkPMFloat::To4PMColors(back, floats);
+    SkPMFloat::To4PMColors(floats[0], floats[1], floats[2], floats[3], back);
     for (int i = 0; i < 4; i++) {
         REPORTER_ASSERT(r, back[i] == colors[i]);
     }
 
-    SkPMFloat::ClampTo4PMColors(back, floats);
+    SkPMFloat::ClampTo4PMColors(floats[0], floats[1], floats[2], floats[3], back);
     for (int i = 0; i < 4; i++) {
         REPORTER_ASSERT(r, back[i] == colors[i]);
     }
 }