add round/ceil/etc. for SkMScalar

tests/Matrix44Test.cpp

 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkMatrix44.h"
 #include "Test.h"
 
@@ skipping 743 matching lines @@
   transform.preConcat(transform2);
   test(false, reporter, transform);
 
   transform.setIdentity();
   transform.set(3, 2, -0.1); // Perspective depth 10
   transform2.setRotateDegreesAbout(0.0, 0.0, 1.0, 90.0);
   transform.preConcat(transform2);
   test(true, reporter, transform);
 }
 
+// just want to exercise the various converters for MScalar
+static void test_toint(skiatest::Reporter* reporter) {
+    SkMatrix44 mat(SkMatrix44::kUninitialized_Constructor);
+    mat.setScale(3, 3, 3);
+
+    SkMScalar sum = SkMScalarFloor(mat.get(0, 0)) +
+                    SkMScalarRound(mat.get(1, 0)) +
+                    SkMScalarCeil(mat.get(2, 0));
+    int isum =      SkMScalarFloorToInt(mat.get(0, 1)) +
+                    SkMScalarRoundToInt(mat.get(1, 2)) +
+                    SkMScalarCeilToInt(mat.get(2, 3));
+    REPORTER_ASSERT(reporter, sum >= 0);
+    REPORTER_ASSERT(reporter, isum >= 0);
+    REPORTER_ASSERT(reporter, static_cast<SkMScalar>(isum) == SkIntToMScalar(isum));
+}
 
 DEF_TEST(Matrix44, reporter) {
     SkMatrix44 mat(SkMatrix44::kUninitialized_Constructor);
     SkMatrix44 inverse(SkMatrix44::kUninitialized_Constructor);
     SkMatrix44 iden1(SkMatrix44::kUninitialized_Constructor);
     SkMatrix44 iden2(SkMatrix44::kUninitialized_Constructor);
     SkMatrix44 rot(SkMatrix44::kUninitialized_Constructor);
 
     mat.setTranslate(1, 1, 1);
     mat.invert(&inverse);
@@ skipping 88 matching lines @@
     test_invert(reporter);
     test_transpose(reporter);
     test_get_set_double(reporter);
     test_set_row_col_major(reporter);
     test_translate(reporter);
     test_scale(reporter);
     test_map2(reporter);
     test_3x3_conversion(reporter);
     test_has_perspective(reporter);
     test_preserves_2d_axis_alignment(reporter);
+    test_toint(reporter);
 }