skia2/include/core/SkScalarCompare.h
epoger@google.com ec3ed6a5eb Automatic update of all copyright notices to reflect new license terms.
I have manually examined all of these diffs and restored a few files that
seem to require manual adjustment.

The following files still need to be modified manually, in a separate CL:

android_sample/SampleApp/AndroidManifest.xml
android_sample/SampleApp/res/layout/layout.xml
android_sample/SampleApp/res/menu/sample.xml
android_sample/SampleApp/res/values/strings.xml
android_sample/SampleApp/src/com/skia/sampleapp/SampleApp.java
android_sample/SampleApp/src/com/skia/sampleapp/SampleView.java
experimental/CiCarbonSampleMain.c
experimental/CocoaDebugger/main.m
experimental/FileReaderApp/main.m
experimental/SimpleCocoaApp/main.m
experimental/iOSSampleApp/Shared/SkAlertPrompt.h
experimental/iOSSampleApp/Shared/SkAlertPrompt.m
experimental/iOSSampleApp/SkiOSSampleApp-Base.xcconfig
experimental/iOSSampleApp/SkiOSSampleApp-Debug.xcconfig
experimental/iOSSampleApp/SkiOSSampleApp-Release.xcconfig
gpu/src/android/GrGLDefaultInterface_android.cpp
gyp/common.gypi
gyp_skia
include/ports/SkHarfBuzzFont.h
include/views/SkOSWindow_wxwidgets.h
make.bat
make.py
src/opts/memset.arm.S
src/opts/memset16_neon.S
src/opts/memset32_neon.S
src/opts/opts_check_arm.cpp
src/ports/SkDebug_brew.cpp
src/ports/SkMemory_brew.cpp
src/ports/SkOSFile_brew.cpp
src/ports/SkXMLParser_empty.cpp
src/utils/ios/SkImageDecoder_iOS.mm
src/utils/ios/SkOSFile_iOS.mm
src/utils/ios/SkStream_NSData.mm
tests/FillPathTest.cpp
Review URL: http://codereview.appspot.com/4816058

git-svn-id: http://skia.googlecode.com/svn/trunk@1982 2bbb7eff-a529-9590-31e7-b0007b416f81
2011-07-28 14:26:00 +00:00

40 lines
1.2 KiB
C

/*
* Copyright 2006 The Android Open Source Project
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#ifndef SkScalarCompare_DEFINED
#define SkScalarCompare_DEFINED
#include "SkFloatBits.h"
#include "SkRect.h"
/** Skia can spend a lot of time just comparing scalars (e.g. quickReject).
When scalar==fixed, this is very fast, and when scalar==hardware-float, this
is also reasonable, but if scalar==software-float, then each compare can be
a function call and take real time. To account for that, we have the flag
SK_SCALAR_SLOW_COMPARES.
If this is defined, we have a special trick where we quickly convert floats
to a 2's compliment form, and then treat them as signed 32bit integers. In
this form we lose a few subtlties (e.g. NaNs always comparing false) but
we gain the speed of integer compares.
*/
#ifdef SK_SCALAR_SLOW_COMPARES
typedef int32_t SkScalarCompareType;
typedef SkIRect SkRectCompareType;
#define SkScalarToCompareType(x) SkScalarAs2sCompliment(x)
#else
typedef SkScalar SkScalarCompareType;
typedef SkRect SkRectCompareType;
#define SkScalarToCompareType(x) (x)
#endif
#endif