add SkScalarIsFinite(), and use it for a more portable impl of SkRect::isValidCoords()
git-svn-id: http://skia.googlecode.com/svn/trunk@775 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/tests/MathTest.cpp b/tests/MathTest.cpp
index 2555d73..9aed9f9 100644
--- a/tests/MathTest.cpp
+++ b/tests/MathTest.cpp
@@ -146,6 +146,40 @@
}
}
+static float make_zero() {
+ return sk_float_sin(0);
+}
+
+static void unittest_isfinite(skiatest::Reporter* reporter) {
+#ifdef SK_SCALAR_IS_FLOAT
+ float nan = ::asin(2);
+ float inf = 1.0 / make_zero();
+ float big = 3.40282e+038;
+
+ REPORTER_ASSERT(reporter, SkScalarIsNaN(nan));
+ REPORTER_ASSERT(reporter, !SkScalarIsNaN(inf));
+ REPORTER_ASSERT(reporter, !SkScalarIsNaN(big));
+ REPORTER_ASSERT(reporter, !SkScalarIsNaN(-big));
+ REPORTER_ASSERT(reporter, !SkScalarIsNaN(0));
+
+ REPORTER_ASSERT(reporter, !SkScalarIsFinite(nan));
+ REPORTER_ASSERT(reporter, !SkScalarIsFinite(inf));
+ REPORTER_ASSERT(reporter, SkScalarIsFinite(big));
+ REPORTER_ASSERT(reporter, SkScalarIsFinite(-big));
+ REPORTER_ASSERT(reporter, SkScalarIsFinite(0));
+#else
+ REPORTER_ASSERT(reporter, SkScalarIsNaN(0x80000000));
+ REPORTER_ASSERT(reporter, !SkScalarIsNaN(0x7FFFFFFF));
+ REPORTER_ASSERT(reporter, !SkScalarIsNaN(0x80000001));
+ REPORTER_ASSERT(reporter, !SkScalarIsNaN(0));
+
+ REPORTER_ASSERT(reporter, !SkScalarIsFinite(0x80000000));
+ REPORTER_ASSERT(reporter, SkScalarIsFinite(0x7FFFFFFF));
+ REPORTER_ASSERT(reporter, SkScalarIsFinite(0x80000001));
+ REPORTER_ASSERT(reporter, SkScalarIsFinite(0));
+#endif
+}
+
#endif
static void test_muldiv255(skiatest::Reporter* reporter) {
@@ -309,6 +343,7 @@
#ifdef SK_CAN_USE_FLOAT
unittest_fastfloat(reporter);
+ unittest_isfinite(reporter);
#endif
#ifdef SkLONGLONG