diff options
Diffstat (limited to 'include')
| -rw-r--r-- | include/core/SkFloatingPoint.h | 6 | ||||
| -rw-r--r-- | include/core/SkMath.h | 5 | ||||
| -rw-r--r-- | include/core/SkScalar.h | 4 |
3 files changed, 15 insertions, 0 deletions
diff --git a/include/core/SkFloatingPoint.h b/include/core/SkFloatingPoint.h index e6856cf750..8c3bb835ca 100644 --- a/include/core/SkFloatingPoint.h +++ b/include/core/SkFloatingPoint.h @@ -31,6 +31,12 @@ static inline float sk_float_pow(float base, float exp) { static_cast<double>(exp))); } +static inline float sk_float_copysign(float x, float y) { + int32_t xbits = SkFloat2Bits(x); + int32_t ybits = SkFloat2Bits(y); + return SkBits2Float((xbits & 0x7FFFFFFF) | (ybits & 0x80000000)); +} + #ifdef SK_BUILD_FOR_WINCE #define sk_float_sqrt(x) (float)::sqrt(x) #define sk_float_sin(x) (float)::sin(x) diff --git a/include/core/SkMath.h b/include/core/SkMath.h index 3f3c660bcb..e0f23617ee 100644 --- a/include/core/SkMath.h +++ b/include/core/SkMath.h @@ -64,6 +64,11 @@ static inline int32_t SkApplySign(int32_t n, int32_t sign) { return (n ^ sign) - sign; } +/** Return x with the sign of y */ +static inline int32_t SkCopySign32(int32_t x, int32_t y) { + return SkApplySign(x, SkExtractSign(x ^ y)); +} + /** Returns (value < 0 ? 0 : value) efficiently (i.e. no compares or branches) */ static inline int SkClampPos(int value) { diff --git a/include/core/SkScalar.h b/include/core/SkScalar.h index 5be809f9e3..9130a7cf12 100644 --- a/include/core/SkScalar.h +++ b/include/core/SkScalar.h @@ -91,6 +91,9 @@ /** Returns the absolute value of the specified SkScalar */ #define SkScalarAbs(x) sk_float_abs(x) + /** Return x with the sign of y + */ + #define SkScalarCopySign(x, y) sk_float_copysign(x, y) /** Returns the value pinned between 0 and max inclusive */ inline SkScalar SkScalarClampMax(SkScalar x, SkScalar max) { @@ -189,6 +192,7 @@ #define SkScalarCeil(x) SkFixedCeil(x) #define SkScalarFloor(x) SkFixedFloor(x) #define SkScalarAbs(x) SkFixedAbs(x) + #define SkScalarCopySign(x, y) SkCopySign32(x, y) #define SkScalarClampMax(x, max) SkClampMax(x, max) #define SkScalarPin(x, min, max) SkPin32(x, min, max) #define SkScalarSquare(x) SkFixedSquare(x) |