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fixed_point: Mark relevant member function [[nodiscard]] 

Marks member functions as discard, where ignoring the return value would
be indicative of a bug or dead code.
This commit is contained in:
Lioncash 2022-10-18 13:10:33 -04:00
parent 0101ef9fb1
commit 2cc9d94060
1 changed files with 14 additions and 14 deletions
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28
src/common/fixed_point.h
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@ -304,11 +304,11 @@ public: // comparison operators
friend constexpr auto operator<=>(FixedPoint lhs, FixedPoint rhs) = default; friend constexpr auto operator<=>(FixedPoint lhs, FixedPoint rhs) = default;
public: // unary operators public: // unary operators
constexpr bool operator!() const { [[nodiscard]] constexpr bool operator!() const {
return !data_; return !data_;
} }
constexpr FixedPoint operator~() const { [[nodiscard]] constexpr FixedPoint operator~() const {
// NOTE(eteran): this will often appear to "just negate" the value // NOTE(eteran): this will often appear to "just negate" the value
// that is not an error, it is because -x == (~x+1) // that is not an error, it is because -x == (~x+1)
// and that "+1" is adding an infinitesimally small fraction to the // and that "+1" is adding an infinitesimally small fraction to the
@ -316,11 +316,11 @@ public: // unary operators
return FixedPoint::from_base(~data_); return FixedPoint::from_base(~data_);
} }
constexpr FixedPoint operator-() const { [[nodiscard]] constexpr FixedPoint operator-() const {
return FixedPoint::from_base(-data_); return FixedPoint::from_base(-data_);
} }
constexpr FixedPoint operator+() const { [[nodiscard]] constexpr FixedPoint operator+() const {
return FixedPoint::from_base(+data_); return FixedPoint::from_base(+data_);
} }
@ -406,42 +406,42 @@ public: // conversion to basic types
data_ += (data_ & fractional_mask) >> 1; data_ += (data_ & fractional_mask) >> 1;
} }
constexpr int to_int() { [[nodiscard]] constexpr int to_int() {
round_up(); round_up();
return static_cast<int>((data_ & integer_mask) >> fractional_bits); return static_cast<int>((data_ & integer_mask) >> fractional_bits);
} }
constexpr unsigned int to_uint() { [[nodiscard]] constexpr unsigned int to_uint() {
round_up(); round_up();
return static_cast<unsigned int>((data_ & integer_mask) >> fractional_bits); return static_cast<unsigned int>((data_ & integer_mask) >> fractional_bits);
} }
constexpr int64_t to_long() { [[nodiscard]] constexpr int64_t to_long() {
round_up(); round_up();
return static_cast<int64_t>((data_ & integer_mask) >> fractional_bits); return static_cast<int64_t>((data_ & integer_mask) >> fractional_bits);
} }
constexpr int to_int_floor() const { [[nodiscard]] constexpr int to_int_floor() const {
return static_cast<int>((data_ & integer_mask) >> fractional_bits); return static_cast<int>((data_ & integer_mask) >> fractional_bits);
} }
constexpr int64_t to_long_floor() const { [[nodiscard]] constexpr int64_t to_long_floor() const {
return static_cast<int64_t>((data_ & integer_mask) >> fractional_bits); return static_cast<int64_t>((data_ & integer_mask) >> fractional_bits);
} }
constexpr unsigned int to_uint_floor() const { [[nodiscard]] constexpr unsigned int to_uint_floor() const {
return static_cast<unsigned int>((data_ & integer_mask) >> fractional_bits); return static_cast<unsigned int>((data_ & integer_mask) >> fractional_bits);
} }
constexpr float to_float() const { [[nodiscard]] constexpr float to_float() const {
return static_cast<float>(data_) / FixedPoint::one; return static_cast<float>(data_) / FixedPoint::one;
} }
constexpr double to_double() const { [[nodiscard]] constexpr double to_double() const {
return static_cast<double>(data_) / FixedPoint::one; return static_cast<double>(data_) / FixedPoint::one;
} }
constexpr base_type to_raw() const { [[nodiscard]] constexpr base_type to_raw() const {
return data_; return data_;
} }
@ -449,7 +449,7 @@ public: // conversion to basic types
data_ &= fractional_mask; data_ &= fractional_mask;
} }
constexpr base_type get_frac() const { [[nodiscard]] constexpr base_type get_frac() const {
return data_ & fractional_mask; return data_ & fractional_mask;
} }