remove (now unused) Sk64 -- just use int64_t

include/core/Sk64.h

-/*
- * 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 Sk64_DEFINED
-#define Sk64_DEFINED
-
-#include "SkTypes.h"
-
-/** \class Sk64
-
-    Sk64 is a 64-bit math package that does not require long long support from the compiler.
-*/
-struct SK_API Sk64 {
-private:
-    int32_t  fHi;   //!< the high 32 bits of the number (including sign)
-    uint32_t fLo;   //!< the low 32 bits of the number
-
-public:
-    int32_t hi() const { return fHi; }
-    uint32_t lo() const { return fLo; }
-
-    int64_t as64() const { return ((int64_t)fHi << 32) | fLo; }
-    int64_t getLongLong() const { return this->as64(); }
-
-    void set64(int64_t value) {
-        fHi = (int32_t)(value >> 32);
-        fLo = (uint32_t)value;
-    }
-
-    /** Returns non-zero if the Sk64 can be represented as a signed 32 bit integer
-    */
-    SkBool is32() const { return fHi == ((int32_t)fLo >> 31); }
-
-    /** Returns non-zero if the Sk64 cannot be represented as a signed 32 bit integer
-    */
-    SkBool is64() const { return fHi != ((int32_t)fLo >> 31); }
-
-    /** Return the signed 32 bit integer equivalent. Asserts that is32() returns non-zero.
-    */
-    int32_t get32() const { SkASSERT(this->is32()); return (int32_t)fLo; }
-
-    /** Returns the square-root of the number as a signed 32 bit value. */
-    int32_t getSqrt() const;
-
-    /** Returns the number of leading zeros of the absolute value of this.
-        Will return in the range [0..64]
-    */
-    int getClzAbs() const;
-
-    /** Returns non-zero if the number is zero */
-    SkBool  isZero() const { return (fHi | fLo) == 0; }
-
-    /** Returns non-zero if the number is non-zero */
-    SkBool  nonZero() const { return fHi | fLo; }
-
-    /** Returns non-zero if the number is negative (number < 0) */
-    SkBool  isNeg() const { return (uint32_t)fHi >> 31; }
-
-    /** Returns non-zero if the number is positive (number > 0) */
-    SkBool  isPos() const { return ~(fHi >> 31) & (fHi | fLo); }
-
-    /** Returns -1,0,+1 based on the sign of the number */
-    int     getSign() const { return (fHi >> 31) | Sk32ToBool(fHi | fLo); }
-
-    /** Negate the number */
-    void    negate();
-
-    /** If the number < 0, negate the number
-    */
-    void    abs();
-
-    /** Returns the number of bits needed to shift the Sk64 to the right
-        in order to make it fit in a signed 32 bit integer.
-    */
-    int     shiftToMake32() const;
-
-    /** Set the number to zero */
-    void    setZero() { fHi = fLo = 0; }
-
-    /** Set the high and low 32 bit values of the number */
-    void    set(int32_t hi, uint32_t lo) { fHi = hi; fLo = lo; }
-
-    /** Set the number to the specified 32 bit integer */
-    void    set(int32_t a) { fHi = a >> 31; fLo = a; }
-
-    /** Set the number to the product of the two 32 bit integers */
-    void    setMul(int32_t a, int32_t b);
-
-    /** extract 32bits after shifting right by bitCount.
-        Note: itCount must be [0..63].
-        Asserts that no significant high bits were lost.
-    */
-    int32_t getShiftRight(unsigned bitCount) const;
-
-    /** Shift the number left by the specified number of bits.
-        @param bits How far to shift left, must be [0..63]
-    */
-    void    shiftLeft(unsigned bits);
-
-    /** Shift the number right by the specified number of bits.
-        @param bits How far to shift right, must be [0..63]. This
-        performs an arithmetic right-shift (sign extending).
-    */
-    void    shiftRight(unsigned bits);
-
-    /** Shift the number right by the specified number of bits, but
-        round the result.
-        @param bits How far to shift right, must be [0..63]. This
-        performs an arithmetic right-shift (sign extending).
-    */
-    void    roundRight(unsigned bits);
-
-    /** Add the specified 32 bit integer to the number */
-    void add(int32_t lo) {
-        int32_t  hi = lo >> 31; // 0 or -1
-        uint32_t sum = fLo + (uint32_t)lo;
-
-        fHi = fHi + hi + (sum < fLo);
-        fLo = sum;
-    }
-
-    /** Add the specified Sk64 to the number */
-    void add(int32_t hi, uint32_t lo) {
-        uint32_t sum = fLo + lo;
-
-        fHi = fHi + hi + (sum < fLo);
-        fLo = sum;
-    }
-
-    /** Add the specified Sk64 to the number */
-    void    add(const Sk64& other) { this->add(other.fHi, other.fLo); }
-
-    /** Subtract the specified Sk64 from the number. (*this) = (*this) - num
-    */
-    void    sub(const Sk64& num);
-
-    /** Subtract the number from the specified Sk64. (*this) = num - (*this)
-    */
-    void    rsub(const Sk64& num);
-
-    /** Multiply the number by the specified 32 bit integer
-    */
-    void    mul(int32_t);
-
-    enum DivOptions {
-        kTrunc_DivOption,   //!< truncate the result when calling div()
-        kRound_DivOption    //!< round the result when calling div()
-    };
-
-    /** Divide the number by the specified 32 bit integer, using the specified
-        divide option (either truncate or round).
-    */
-    void    div(int32_t, DivOptions);
-
-    friend bool operator==(const Sk64& a, const Sk64& b) {
-        return a.fHi == b.fHi && a.fLo == b.fLo;
-    }
-
-    friend bool operator!=(const Sk64& a, const Sk64& b) {
-        return a.fHi != b.fHi || a.fLo != b.fLo;
-    }
-
-    friend bool operator<(const Sk64& a, const Sk64& b) {
-        return a.fHi < b.fHi || (a.fHi == b.fHi && a.fLo < b.fLo);
-    }
-
-    friend bool operator<=(const Sk64& a, const Sk64& b) {
-        return a.fHi < b.fHi || (a.fHi == b.fHi && a.fLo <= b.fLo);
-    }
-
-    friend bool operator>(const Sk64& a, const Sk64& b) {
-        return a.fHi > b.fHi || (a.fHi == b.fHi && a.fLo > b.fLo);
-    }
-
-    friend bool operator>=(const Sk64& a, const Sk64& b) {
-        return a.fHi > b.fHi || (a.fHi == b.fHi && a.fLo >= b.fLo);
-    }
-
-    // Private to unittests. Parameter is (skiatest::Reporter*)
-    static void UnitTestWithReporter(void* skiatest_reporter);
-};
-
-#endif