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Using friend function comparison and arithmetic operators, for parameter symmetry.

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Mat Sutcliffe
2019-02-27 22:27:34 +00:00
parent 1089adf18d
commit 798a0b8f06
5 changed files with 27 additions and 67 deletions
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22
src/blackmisc/pq/physicalquantity.h
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@@ -160,10 +160,10 @@ namespace BlackMisc
PQ operator /(double divide) const;
//! Equal operator ==
bool operator==(const CPhysicalQuantity &other) const;
friend bool operator==(const CPhysicalQuantity &a, const CPhysicalQuantity &b) { return a.equals(b); }
//! Not equal operator !=
bool operator!=(const CPhysicalQuantity &other) const;
friend bool operator!=(const CPhysicalQuantity &a, const CPhysicalQuantity &b) { return !a.equals(b); }
//! Plus operator +=
CPhysicalQuantity &operator +=(const CPhysicalQuantity &other);
@@ -172,22 +172,22 @@ namespace BlackMisc
CPhysicalQuantity &operator -=(const CPhysicalQuantity &other);
//! Greater operator >
bool operator >(const CPhysicalQuantity &other) const;
friend bool operator>(const CPhysicalQuantity &a, const CPhysicalQuantity &b) { return b.lessThan(a); }
//! Less operator <
bool operator <(const CPhysicalQuantity &other) const;
friend bool operator<(const CPhysicalQuantity &a, const CPhysicalQuantity &b) { return a.lessThan(b); }
//! Less equal operator <=
bool operator <=(const CPhysicalQuantity &other) const;
friend bool operator<=(const CPhysicalQuantity &a, const CPhysicalQuantity &b) { return !b.lessThan(a); }
//! Greater equal operator >=
bool operator >=(const CPhysicalQuantity &other) const;
friend bool operator>=(const CPhysicalQuantity &a, const CPhysicalQuantity &b) { return !a.lessThan(b); }
//! Plus operator +
PQ operator +(const PQ &other) const;
friend PQ operator +(const PQ &a, const PQ &b) { PQ copy(a); copy += b; return copy; }
//! Minus operator -
PQ operator -(const PQ &other) const;
friend PQ operator -(const PQ &a, const PQ &b) { PQ copy(a); copy -= b; return copy; }
//! Quantity value <= epsilon
bool isZeroEpsilonConsidered() const;
@@ -281,6 +281,12 @@ namespace BlackMisc
//! Implementation of compare
static int compareImpl(const PQ &, const PQ &);
//! Private implementation of equality operators
bool equals(const CPhysicalQuantity &other) const;
//! Private implementation of comparison operators
bool lessThan(const CPhysicalQuantity &other) const;
//! Easy access to derived class (CRTP template parameter)
PQ const *derived() const;