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-rw-r--r--src/common/fixed_point.h97
1 files changed, 43 insertions, 54 deletions
diff --git a/src/common/fixed_point.h b/src/common/fixed_point.h
index 4a0f72cc9..6eb6afe2f 100644
--- a/src/common/fixed_point.h
+++ b/src/common/fixed_point.h
@@ -4,14 +4,7 @@
// From: https://github.com/eteran/cpp-utilities/blob/master/fixed/include/cpp-utilities/fixed.h
// See also: http://stackoverflow.com/questions/79677/whats-the-best-way-to-do-fixed-point-math
-#ifndef FIXED_H_
-#define FIXED_H_
-
-#if __cplusplus >= 201402L
-#define CONSTEXPR14 constexpr
-#else
-#define CONSTEXPR14
-#endif
+#pragma once
#include <cstddef> // for size_t
#include <cstdint>
@@ -106,7 +99,7 @@ constexpr B next_to_base(N rhs) {
struct divide_by_zero : std::exception {};
template <size_t I, size_t F>
-CONSTEXPR14 FixedPoint<I, F> divide(
+constexpr FixedPoint<I, F> divide(
FixedPoint<I, F> numerator, FixedPoint<I, F> denominator, FixedPoint<I, F>& remainder,
typename std::enable_if<type_from_size<I + F>::next_size::is_specialized>::type* = nullptr) {
@@ -126,7 +119,7 @@ CONSTEXPR14 FixedPoint<I, F> divide(
}
template <size_t I, size_t F>
-CONSTEXPR14 FixedPoint<I, F> divide(
+constexpr FixedPoint<I, F> divide(
FixedPoint<I, F> numerator, FixedPoint<I, F> denominator, FixedPoint<I, F>& remainder,
typename std::enable_if<!type_from_size<I + F>::next_size::is_specialized>::type* = nullptr) {
@@ -196,7 +189,7 @@ CONSTEXPR14 FixedPoint<I, F> divide(
// this is the usual implementation of multiplication
template <size_t I, size_t F>
-CONSTEXPR14 FixedPoint<I, F> multiply(
+constexpr FixedPoint<I, F> multiply(
FixedPoint<I, F> lhs, FixedPoint<I, F> rhs,
typename std::enable_if<type_from_size<I + F>::next_size::is_specialized>::type* = nullptr) {
@@ -215,7 +208,7 @@ CONSTEXPR14 FixedPoint<I, F> multiply(
// it is slightly slower, but is more robust since it doesn't
// require and upgraded type
template <size_t I, size_t F>
-CONSTEXPR14 FixedPoint<I, F> multiply(
+constexpr FixedPoint<I, F> multiply(
FixedPoint<I, F> lhs, FixedPoint<I, F> rhs,
typename std::enable_if<!type_from_size<I + F>::next_size::is_specialized>::type* = nullptr) {
@@ -284,7 +277,7 @@ public: // constructors
public: // conversion
template <size_t I2, size_t F2>
- CONSTEXPR14 explicit FixedPoint(FixedPoint<I2, F2> other) {
+ constexpr explicit FixedPoint(FixedPoint<I2, F2> other) {
static_assert(I2 <= I && F2 <= F, "Scaling conversion can only upgrade types");
using T = FixedPoint<I2, F2>;
@@ -353,81 +346,81 @@ public: // unary operators
return FixedPoint::from_base(+data_);
}
- CONSTEXPR14 FixedPoint& operator++() {
+ constexpr FixedPoint& operator++() {
data_ += one;
return *this;
}
- CONSTEXPR14 FixedPoint& operator--() {
+ constexpr FixedPoint& operator--() {
data_ -= one;
return *this;
}
- CONSTEXPR14 FixedPoint operator++(int) {
+ constexpr FixedPoint operator++(int) {
FixedPoint tmp(*this);
data_ += one;
return tmp;
}
- CONSTEXPR14 FixedPoint operator--(int) {
+ constexpr FixedPoint operator--(int) {
FixedPoint tmp(*this);
data_ -= one;
return tmp;
}
public: // basic math operators
- CONSTEXPR14 FixedPoint& operator+=(FixedPoint n) {
+ constexpr FixedPoint& operator+=(FixedPoint n) {
data_ += n.data_;
return *this;
}
- CONSTEXPR14 FixedPoint& operator-=(FixedPoint n) {
+ constexpr FixedPoint& operator-=(FixedPoint n) {
data_ -= n.data_;
return *this;
}
- CONSTEXPR14 FixedPoint& operator*=(FixedPoint n) {
+ constexpr FixedPoint& operator*=(FixedPoint n) {
return assign(detail::multiply(*this, n));
}
- CONSTEXPR14 FixedPoint& operator/=(FixedPoint n) {
+ constexpr FixedPoint& operator/=(FixedPoint n) {
FixedPoint temp;
return assign(detail::divide(*this, n, temp));
}
private:
- CONSTEXPR14 FixedPoint& assign(FixedPoint rhs) {
+ constexpr FixedPoint& assign(FixedPoint rhs) {
data_ = rhs.data_;
return *this;
}
public: // binary math operators, effects underlying bit pattern since these
// don't really typically make sense for non-integer values
- CONSTEXPR14 FixedPoint& operator&=(FixedPoint n) {
+ constexpr FixedPoint& operator&=(FixedPoint n) {
data_ &= n.data_;
return *this;
}
- CONSTEXPR14 FixedPoint& operator|=(FixedPoint n) {
+ constexpr FixedPoint& operator|=(FixedPoint n) {
data_ |= n.data_;
return *this;
}
- CONSTEXPR14 FixedPoint& operator^=(FixedPoint n) {
+ constexpr FixedPoint& operator^=(FixedPoint n) {
data_ ^= n.data_;
return *this;
}
template <class Integer,
class = typename std::enable_if<std::is_integral<Integer>::value>::type>
- CONSTEXPR14 FixedPoint& operator>>=(Integer n) {
+ constexpr FixedPoint& operator>>=(Integer n) {
data_ >>= n;
return *this;
}
template <class Integer,
class = typename std::enable_if<std::is_integral<Integer>::value>::type>
- CONSTEXPR14 FixedPoint& operator<<=(Integer n) {
+ constexpr FixedPoint& operator<<=(Integer n) {
data_ <<= n;
return *this;
}
@@ -485,7 +478,7 @@ public: // conversion to basic types
}
public:
- CONSTEXPR14 void swap(FixedPoint& rhs) {
+ constexpr void swap(FixedPoint& rhs) {
using std::swap;
swap(data_, rhs.data_);
}
@@ -497,8 +490,8 @@ public:
// if we have the same fractional portion, but differing integer portions, we trivially upgrade the
// smaller type
template <size_t I1, size_t I2, size_t F>
-CONSTEXPR14 typename std::conditional<I1 >= I2, FixedPoint<I1, F>, FixedPoint<I2, F>>::type
-operator+(FixedPoint<I1, F> lhs, FixedPoint<I2, F> rhs) {
+constexpr typename std::conditional<I1 >= I2, FixedPoint<I1, F>, FixedPoint<I2, F>>::type operator+(
+ FixedPoint<I1, F> lhs, FixedPoint<I2, F> rhs) {
using T = typename std::conditional<I1 >= I2, FixedPoint<I1, F>, FixedPoint<I2, F>>::type;
@@ -508,8 +501,8 @@ operator+(FixedPoint<I1, F> lhs, FixedPoint<I2, F> rhs) {
}
template <size_t I1, size_t I2, size_t F>
-CONSTEXPR14 typename std::conditional<I1 >= I2, FixedPoint<I1, F>, FixedPoint<I2, F>>::type
-operator-(FixedPoint<I1, F> lhs, FixedPoint<I2, F> rhs) {
+constexpr typename std::conditional<I1 >= I2, FixedPoint<I1, F>, FixedPoint<I2, F>>::type operator-(
+ FixedPoint<I1, F> lhs, FixedPoint<I2, F> rhs) {
using T = typename std::conditional<I1 >= I2, FixedPoint<I1, F>, FixedPoint<I2, F>>::type;
@@ -519,8 +512,8 @@ operator-(FixedPoint<I1, F> lhs, FixedPoint<I2, F> rhs) {
}
template <size_t I1, size_t I2, size_t F>
-CONSTEXPR14 typename std::conditional<I1 >= I2, FixedPoint<I1, F>, FixedPoint<I2, F>>::type
-operator*(FixedPoint<I1, F> lhs, FixedPoint<I2, F> rhs) {
+constexpr typename std::conditional<I1 >= I2, FixedPoint<I1, F>, FixedPoint<I2, F>>::type operator*(
+ FixedPoint<I1, F> lhs, FixedPoint<I2, F> rhs) {
using T = typename std::conditional<I1 >= I2, FixedPoint<I1, F>, FixedPoint<I2, F>>::type;
@@ -530,8 +523,8 @@ operator*(FixedPoint<I1, F> lhs, FixedPoint<I2, F> rhs) {
}
template <size_t I1, size_t I2, size_t F>
-CONSTEXPR14 typename std::conditional<I1 >= I2, FixedPoint<I1, F>, FixedPoint<I2, F>>::type
-operator/(FixedPoint<I1, F> lhs, FixedPoint<I2, F> rhs) {
+constexpr typename std::conditional<I1 >= I2, FixedPoint<I1, F>, FixedPoint<I2, F>>::type operator/(
+ FixedPoint<I1, F> lhs, FixedPoint<I2, F> rhs) {
using T = typename std::conditional<I1 >= I2, FixedPoint<I1, F>, FixedPoint<I2, F>>::type;
@@ -548,75 +541,75 @@ std::ostream& operator<<(std::ostream& os, FixedPoint<I, F> f) {
// basic math operators
template <size_t I, size_t F>
-CONSTEXPR14 FixedPoint<I, F> operator+(FixedPoint<I, F> lhs, FixedPoint<I, F> rhs) {
+constexpr FixedPoint<I, F> operator+(FixedPoint<I, F> lhs, FixedPoint<I, F> rhs) {
lhs += rhs;
return lhs;
}
template <size_t I, size_t F>
-CONSTEXPR14 FixedPoint<I, F> operator-(FixedPoint<I, F> lhs, FixedPoint<I, F> rhs) {
+constexpr FixedPoint<I, F> operator-(FixedPoint<I, F> lhs, FixedPoint<I, F> rhs) {
lhs -= rhs;
return lhs;
}
template <size_t I, size_t F>
-CONSTEXPR14 FixedPoint<I, F> operator*(FixedPoint<I, F> lhs, FixedPoint<I, F> rhs) {
+constexpr FixedPoint<I, F> operator*(FixedPoint<I, F> lhs, FixedPoint<I, F> rhs) {
lhs *= rhs;
return lhs;
}
template <size_t I, size_t F>
-CONSTEXPR14 FixedPoint<I, F> operator/(FixedPoint<I, F> lhs, FixedPoint<I, F> rhs) {
+constexpr FixedPoint<I, F> operator/(FixedPoint<I, F> lhs, FixedPoint<I, F> rhs) {
lhs /= rhs;
return lhs;
}
template <size_t I, size_t F, class Number,
class = typename std::enable_if<std::is_arithmetic<Number>::value>::type>
-CONSTEXPR14 FixedPoint<I, F> operator+(FixedPoint<I, F> lhs, Number rhs) {
+constexpr FixedPoint<I, F> operator+(FixedPoint<I, F> lhs, Number rhs) {
lhs += FixedPoint<I, F>(rhs);
return lhs;
}
template <size_t I, size_t F, class Number,
class = typename std::enable_if<std::is_arithmetic<Number>::value>::type>
-CONSTEXPR14 FixedPoint<I, F> operator-(FixedPoint<I, F> lhs, Number rhs) {
+constexpr FixedPoint<I, F> operator-(FixedPoint<I, F> lhs, Number rhs) {
lhs -= FixedPoint<I, F>(rhs);
return lhs;
}
template <size_t I, size_t F, class Number,
class = typename std::enable_if<std::is_arithmetic<Number>::value>::type>
-CONSTEXPR14 FixedPoint<I, F> operator*(FixedPoint<I, F> lhs, Number rhs) {
+constexpr FixedPoint<I, F> operator*(FixedPoint<I, F> lhs, Number rhs) {
lhs *= FixedPoint<I, F>(rhs);
return lhs;
}
template <size_t I, size_t F, class Number,
class = typename std::enable_if<std::is_arithmetic<Number>::value>::type>
-CONSTEXPR14 FixedPoint<I, F> operator/(FixedPoint<I, F> lhs, Number rhs) {
+constexpr FixedPoint<I, F> operator/(FixedPoint<I, F> lhs, Number rhs) {
lhs /= FixedPoint<I, F>(rhs);
return lhs;
}
template <size_t I, size_t F, class Number,
class = typename std::enable_if<std::is_arithmetic<Number>::value>::type>
-CONSTEXPR14 FixedPoint<I, F> operator+(Number lhs, FixedPoint<I, F> rhs) {
+constexpr FixedPoint<I, F> operator+(Number lhs, FixedPoint<I, F> rhs) {
FixedPoint<I, F> tmp(lhs);
tmp += rhs;
return tmp;
}
template <size_t I, size_t F, class Number,
class = typename std::enable_if<std::is_arithmetic<Number>::value>::type>
-CONSTEXPR14 FixedPoint<I, F> operator-(Number lhs, FixedPoint<I, F> rhs) {
+constexpr FixedPoint<I, F> operator-(Number lhs, FixedPoint<I, F> rhs) {
FixedPoint<I, F> tmp(lhs);
tmp -= rhs;
return tmp;
}
template <size_t I, size_t F, class Number,
class = typename std::enable_if<std::is_arithmetic<Number>::value>::type>
-CONSTEXPR14 FixedPoint<I, F> operator*(Number lhs, FixedPoint<I, F> rhs) {
+constexpr FixedPoint<I, F> operator*(Number lhs, FixedPoint<I, F> rhs) {
FixedPoint<I, F> tmp(lhs);
tmp *= rhs;
return tmp;
}
template <size_t I, size_t F, class Number,
class = typename std::enable_if<std::is_arithmetic<Number>::value>::type>
-CONSTEXPR14 FixedPoint<I, F> operator/(Number lhs, FixedPoint<I, F> rhs) {
+constexpr FixedPoint<I, F> operator/(Number lhs, FixedPoint<I, F> rhs) {
FixedPoint<I, F> tmp(lhs);
tmp /= rhs;
return tmp;
@@ -625,13 +618,13 @@ CONSTEXPR14 FixedPoint<I, F> operator/(Number lhs, FixedPoint<I, F> rhs) {
// shift operators
template <size_t I, size_t F, class Integer,
class = typename std::enable_if<std::is_integral<Integer>::value>::type>
-CONSTEXPR14 FixedPoint<I, F> operator<<(FixedPoint<I, F> lhs, Integer rhs) {
+constexpr FixedPoint<I, F> operator<<(FixedPoint<I, F> lhs, Integer rhs) {
lhs <<= rhs;
return lhs;
}
template <size_t I, size_t F, class Integer,
class = typename std::enable_if<std::is_integral<Integer>::value>::type>
-CONSTEXPR14 FixedPoint<I, F> operator>>(FixedPoint<I, F> lhs, Integer rhs) {
+constexpr FixedPoint<I, F> operator>>(FixedPoint<I, F> lhs, Integer rhs) {
lhs >>= rhs;
return lhs;
}
@@ -700,7 +693,3 @@ constexpr bool operator!=(Number lhs, FixedPoint<I, F> rhs) {
}
} // namespace Common
-
-#undef CONSTEXPR14
-
-#endif
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-22 07:38:41 +0100