Specialize Sk2d for ARM64
The implementation is nearly identical to Sk2f, with these changes: - float32x2_t -> float64x2_t - vfoo -> vfooq - one extra Newton's method step in sqrt(). Also, generally fix NEON detection to be defined(SK_ARM_HAS_NEON). SK_ARM_HAS_NEON is not being set on ARM64 bots right now (nor does the compiler seem to set __ARM_NEON__), so this CL fixes everything up. BUG=skia: Review URL: https://codereview.chromium.org/1020963002
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@ -197,6 +197,11 @@
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#define SK_CPU_ARM64
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#endif
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// All 64-bit ARM chips have NEON. Many 32-bit ARM chips do too.
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#if !defined(SK_ARM_HAS_NEON) && (defined(SK_CPU_ARM64) || defined(__ARM_NEON__))
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#define SK_ARM_HAS_NEON
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#endif
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//////////////////////////////////////////////////////////////////////
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#if !defined(SKIA_IMPLEMENTATION)
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@ -14,7 +14,7 @@
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#define SK2X_PREAMBLE 1
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#if SK_CPU_SSE_LEVEL >= SK_CPU_SSE_LEVEL_SSE2 && !defined(SKNX_NO_SIMD)
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#include "../opts/Sk2x_sse.h"
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#elif defined(__ARM_NEON__) && !defined(SKNX_NO_SIMD)
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#elif defined(SK_ARM_HAS_NEON) && !defined(SKNX_NO_SIMD)
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#include "../opts/Sk2x_neon.h"
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#else
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#include "../opts/Sk2x_none.h"
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@ -71,7 +71,7 @@ private:
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#define SK2X_PRIVATE 1
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#if SK_CPU_SSE_LEVEL >= SK_CPU_SSE_LEVEL_SSE2 && !defined(SKNX_NO_SIMD)
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#include "../opts/Sk2x_sse.h"
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#elif defined(__ARM_NEON__) && !defined(SKNX_NO_SIMD)
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#elif defined(SK_ARM_HAS_NEON) && !defined(SKNX_NO_SIMD)
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#include "../opts/Sk2x_neon.h"
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#else
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#include "../opts/Sk2x_none.h"
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@ -81,7 +81,7 @@ private:
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#if SK_CPU_SSE_LEVEL >= SK_CPU_SSE_LEVEL_SSE2 && !defined(SKNX_NO_SIMD)
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#include "../opts/Sk2x_sse.h"
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#elif defined(__ARM_NEON__) && !defined(SKNX_NO_SIMD)
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#elif defined(SK_ARM_HAS_NEON) && !defined(SKNX_NO_SIMD)
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#include "../opts/Sk2x_neon.h"
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#else
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#include "../opts/Sk2x_none.h"
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@ -8,7 +8,7 @@
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#if SK_CPU_SSE_LEVEL >= SK_CPU_SSE_LEVEL_SSE2
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#include <immintrin.h>
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#elif defined(__ARM_NEON__)
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#elif defined(SK_ARM_HAS_NEON)
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#include <arm_neon.h>
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#endif
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@ -66,7 +66,7 @@ private:
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float fColor[4];
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#if SK_CPU_SSE_LEVEL >= SK_CPU_SSE_LEVEL_SSE2
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__m128 fColors;
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#elif defined(__ARM_NEON__)
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#elif defined(SK_ARM_HAS_NEON)
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float32x4_t fColors;
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#endif
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};
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@ -76,7 +76,7 @@ private:
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#include "../opts/SkPMFloat_SSSE3.h"
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#elif SK_CPU_SSE_LEVEL >= SK_CPU_SSE_LEVEL_SSE2
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#include "../opts/SkPMFloat_SSE2.h"
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#elif defined(__ARM_NEON__)
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#elif defined(SK_ARM_HAS_NEON)
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#include "../opts/SkPMFloat_neon.h"
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#else
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#include "../opts/SkPMFloat_none.h"
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@ -21,9 +21,9 @@
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#define SK_ARM_NEON_MODE_ALWAYS 1
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#define SK_ARM_NEON_MODE_DYNAMIC 2
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#if defined(SK_CPU_ARM32) && defined(SK_ARM_HAS_OPTIONAL_NEON)
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#if defined(SK_ARM_HAS_OPTIONAL_NEON)
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# define SK_ARM_NEON_MODE SK_ARM_NEON_MODE_DYNAMIC
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#elif defined(SK_CPU_ARM32) && defined(SK_ARM_HAS_NEON) || defined(SK_CPU_ARM64)
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#elif defined(SK_ARM_HAS_NEON)
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# define SK_ARM_NEON_MODE SK_ARM_NEON_MODE_ALWAYS
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#else
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# define SK_ARM_NEON_MODE SK_ARM_NEON_MODE_NONE
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@ -15,7 +15,11 @@
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#include <math.h>
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template <typename T> struct SkScalarToSIMD;
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template <> struct SkScalarToSIMD< float> { typedef float32x2_t Type; };
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template <> struct SkScalarToSIMD<double> { typedef double Type[2]; };
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#if defined(SK_CPU_ARM64)
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template <> struct SkScalarToSIMD<double> { typedef float64x2_t Type; };
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#else
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template <> struct SkScalarToSIMD<double> { typedef double Type[2]; };
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#endif
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#elif defined(SK2X_PRIVATE)
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@ -60,33 +64,65 @@ M(Sk2f) sqrt() const {
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#define M(...) template <> inline __VA_ARGS__ Sk2x<double>::
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// TODO: #ifdef SK_CPU_ARM64 use float64x2_t for Sk2d.
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#if defined(SK_CPU_ARM64)
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M() Sk2x() {}
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M() Sk2x(double val) { fVec = vdupq_n_f64(val); }
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M() Sk2x(double a, double b) {
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fVec = vsetq_lane_f64(a, fVec, 0);
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fVec = vsetq_lane_f64(b, fVec, 1);
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}
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M(Sk2d&) operator=(const Sk2d& o) { fVec = o.fVec; return *this; }
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M() Sk2x() {}
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M() Sk2x(double val) { fVec[0] = fVec[1] = val; }
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M() Sk2x(double a, double b) { fVec[0] = a; fVec[1] = b; }
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M(Sk2d&) operator=(const Sk2d& o) {
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fVec[0] = o.fVec[0];
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fVec[1] = o.fVec[1];
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return *this;
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}
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M(Sk2d) Load(const double vals[2]) { return vld1q_f64(vals); }
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M(void) store(double vals[2]) const { vst1q_f64(vals, fVec); }
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M(Sk2d) Load(const double vals[2]) { return Sk2d(vals[0], vals[1]); }
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M(void) store(double vals[2]) const { vals[0] = fVec[0]; vals[1] = fVec[1]; }
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M(Sk2d) add(const Sk2d& o) const { return vaddq_f64(fVec, o.fVec); }
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M(Sk2d) subtract(const Sk2d& o) const { return vsubq_f64(fVec, o.fVec); }
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M(Sk2d) multiply(const Sk2d& o) const { return vmulq_f64(fVec, o.fVec); }
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M(Sk2d) add(const Sk2d& o) const { return Sk2d(fVec[0] + o.fVec[0], fVec[1] + o.fVec[1]); }
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M(Sk2d) subtract(const Sk2d& o) const { return Sk2d(fVec[0] - o.fVec[0], fVec[1] - o.fVec[1]); }
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M(Sk2d) multiply(const Sk2d& o) const { return Sk2d(fVec[0] * o.fVec[0], fVec[1] * o.fVec[1]); }
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M(Sk2d) Min(const Sk2d& a, const Sk2d& b) { return vminq_f64(a.fVec, b.fVec); }
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M(Sk2d) Max(const Sk2d& a, const Sk2d& b) { return vmaxq_f64(a.fVec, b.fVec); }
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M(Sk2d) Min(const Sk2d& a, const Sk2d& b) {
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return Sk2d(SkTMin(a.fVec[0], b.fVec[0]), SkTMin(a.fVec[1], b.fVec[1]));
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}
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M(Sk2d) Max(const Sk2d& a, const Sk2d& b) {
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return Sk2d(SkTMax(a.fVec[0], b.fVec[0]), SkTMax(a.fVec[1], b.fVec[1]));
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}
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M(Sk2d) rsqrt() const {
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float64x2_t est0 = vrsqrteq_f64(fVec),
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est1 = vmulq_f64(vrsqrtsq_f64(fVec, vmulq_f64(est0, est0)), est0);
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return est1;
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}
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M(Sk2d) sqrt() const {
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float64x2_t est1 = this->rsqrt().fVec,
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// Two extra steps of Newton's method to refine the estimate of 1/sqrt(this).
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est2 = vmulq_f64(vrsqrtsq_f64(fVec, vmulq_f64(est1, est1)), est1),
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est3 = vmulq_f64(vrsqrtsq_f64(fVec, vmulq_f64(est2, est2)), est2);
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return vmulq_f64(fVec, est3);
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}
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M(Sk2d) rsqrt() const { return Sk2d(1.0/::sqrt(fVec[0]), 1.0/::sqrt(fVec[1])); }
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M(Sk2d) sqrt() const { return Sk2d( ::sqrt(fVec[0]), ::sqrt(fVec[1])); }
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#else // Scalar implementation for 32-bit chips, which don't have float64x2_t.
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M() Sk2x() {}
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M() Sk2x(double val) { fVec[0] = fVec[1] = val; }
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M() Sk2x(double a, double b) { fVec[0] = a; fVec[1] = b; }
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M(Sk2d&) operator=(const Sk2d& o) {
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fVec[0] = o.fVec[0];
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fVec[1] = o.fVec[1];
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return *this;
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}
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M(Sk2d) Load(const double vals[2]) { return Sk2d(vals[0], vals[1]); }
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M(void) store(double vals[2]) const { vals[0] = fVec[0]; vals[1] = fVec[1]; }
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M(Sk2d) add(const Sk2d& o) const { return Sk2d(fVec[0] + o.fVec[0], fVec[1] + o.fVec[1]); }
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M(Sk2d) subtract(const Sk2d& o) const { return Sk2d(fVec[0] - o.fVec[0], fVec[1] - o.fVec[1]); }
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M(Sk2d) multiply(const Sk2d& o) const { return Sk2d(fVec[0] * o.fVec[0], fVec[1] * o.fVec[1]); }
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M(Sk2d) Min(const Sk2d& a, const Sk2d& b) {
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return Sk2d(SkTMin(a.fVec[0], b.fVec[0]), SkTMin(a.fVec[1], b.fVec[1]));
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}
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M(Sk2d) Max(const Sk2d& a, const Sk2d& b) {
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return Sk2d(SkTMax(a.fVec[0], b.fVec[0]), SkTMax(a.fVec[1], b.fVec[1]));
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}
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M(Sk2d) rsqrt() const { return Sk2d(1.0/::sqrt(fVec[0]), 1.0/::sqrt(fVec[1])); }
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M(Sk2d) sqrt() const { return Sk2d( ::sqrt(fVec[0]), ::sqrt(fVec[1])); }
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#endif
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#undef M
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