Index: include/private/SkFloatBits.h |
diff --git a/include/private/SkFloatBits.h b/include/private/SkFloatBits.h |
deleted file mode 100644 |
index 3ddb9ef564cfaaf2dd07e9f04bd1ce02b4b39d35..0000000000000000000000000000000000000000 |
--- a/include/private/SkFloatBits.h |
+++ /dev/null |
@@ -1,132 +0,0 @@ |
- |
-/* |
- * Copyright 2008 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 SkFloatBits_DEFINED |
-#define SkFloatBits_DEFINED |
- |
-#include "SkTypes.h" |
- |
-/** Convert a sign-bit int (i.e. float interpreted as int) into a 2s compliement |
- int. This also converts -0 (0x80000000) to 0. Doing this to a float allows |
- it to be compared using normal C operators (<, <=, etc.) |
-*/ |
-static inline int32_t SkSignBitTo2sCompliment(int32_t x) { |
- if (x < 0) { |
- x &= 0x7FFFFFFF; |
- x = -x; |
- } |
- return x; |
-} |
- |
-/** Convert a 2s compliment int to a sign-bit (i.e. int interpreted as float). |
- This undoes the result of SkSignBitTo2sCompliment(). |
- */ |
-static inline int32_t Sk2sComplimentToSignBit(int32_t x) { |
- int sign = x >> 31; |
- // make x positive |
- x = (x ^ sign) - sign; |
- // set the sign bit as needed |
- x |= sign << 31; |
- return x; |
-} |
- |
-/** Given the bit representation of a float, return its value cast to an int. |
- If the value is out of range, or NaN, return return +/- SK_MaxS32 |
-*/ |
-int32_t SkFloatBits_toIntCast(int32_t floatBits); |
- |
-/** Given the bit representation of a float, return its floor as an int. |
- If the value is out of range, or NaN, return return +/- SK_MaxS32 |
- */ |
-SK_API int32_t SkFloatBits_toIntFloor(int32_t floatBits); |
- |
-/** Given the bit representation of a float, return it rounded to an int. |
- If the value is out of range, or NaN, return return +/- SK_MaxS32 |
- */ |
-SK_API int32_t SkFloatBits_toIntRound(int32_t floatBits); |
- |
-/** Given the bit representation of a float, return its ceiling as an int. |
- If the value is out of range, or NaN, return return +/- SK_MaxS32 |
- */ |
-SK_API int32_t SkFloatBits_toIntCeil(int32_t floatBits); |
- |
- |
-union SkFloatIntUnion { |
- float fFloat; |
- int32_t fSignBitInt; |
-}; |
- |
-// Helper to see a float as its bit pattern (w/o aliasing warnings) |
-static inline int32_t SkFloat2Bits(float x) { |
- SkFloatIntUnion data; |
- data.fFloat = x; |
- return data.fSignBitInt; |
-} |
- |
-// Helper to see a bit pattern as a float (w/o aliasing warnings) |
-static inline float SkBits2Float(int32_t floatAsBits) { |
- SkFloatIntUnion data; |
- data.fSignBitInt = floatAsBits; |
- return data.fFloat; |
-} |
- |
-/** Return the float as a 2s compliment int. Just to be used to compare floats |
- to each other or against positive float-bit-constants (like 0). This does |
- not return the int equivalent of the float, just something cheaper for |
- compares-only. |
- */ |
-static inline int32_t SkFloatAs2sCompliment(float x) { |
- return SkSignBitTo2sCompliment(SkFloat2Bits(x)); |
-} |
- |
-/** Return the 2s compliment int as a float. This undos the result of |
- SkFloatAs2sCompliment |
- */ |
-static inline float Sk2sComplimentAsFloat(int32_t x) { |
- return SkBits2Float(Sk2sComplimentToSignBit(x)); |
-} |
- |
-/** Return x cast to a float (i.e. (float)x) |
-*/ |
-float SkIntToFloatCast(int x); |
- |
-/** Return the float cast to an int. |
- If the value is out of range, or NaN, return +/- SK_MaxS32 |
-*/ |
-static inline int32_t SkFloatToIntCast(float x) { |
- return SkFloatBits_toIntCast(SkFloat2Bits(x)); |
-} |
- |
-/** Return the floor of the float as an int. |
- If the value is out of range, or NaN, return +/- SK_MaxS32 |
-*/ |
-static inline int32_t SkFloatToIntFloor(float x) { |
- return SkFloatBits_toIntFloor(SkFloat2Bits(x)); |
-} |
- |
-/** Return the float rounded to an int. |
- If the value is out of range, or NaN, return +/- SK_MaxS32 |
-*/ |
-static inline int32_t SkFloatToIntRound(float x) { |
- return SkFloatBits_toIntRound(SkFloat2Bits(x)); |
-} |
- |
-/** Return the ceiling of the float as an int. |
- If the value is out of range, or NaN, return +/- SK_MaxS32 |
-*/ |
-static inline int32_t SkFloatToIntCeil(float x) { |
- return SkFloatBits_toIntCeil(SkFloat2Bits(x)); |
-} |
- |
-// Scalar wrappers for float-bit routines |
- |
-#define SkScalarAs2sCompliment(x) SkFloatAs2sCompliment(x) |
-#define Sk2sComplimentAsScalar(x) Sk2sComplimentAsFloat(x) |
- |
-#endif |