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| template<typename T , std::enable_if_t< std::is_integral_v< T >, bool > = true> |
| constexpr bool | jau::add_overflow (const T a, const T b, T &res) noexcept |
| | Integer overflow aware addition returning true if overflow occurred, otherwise false having the result stored in res. More...
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| template<typename T , std::enable_if_t< std::is_integral_v< T >, bool > = true> |
| constexpr nsize_t | jau::digits10 (const T x, const bool sign_is_digit=true) noexcept |
| | Returns the number of decimal digits of the given integral value number using std::log10<T>(). More...
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| template<typename T , std::enable_if_t< std::is_integral_v< T >, bool > = true> |
| constexpr nsize_t | jau::digits10 (const T x, const snsize_t x_sign, const bool sign_is_digit=true) noexcept |
| | Returns the number of decimal digits of the given integral value number using std::log10<T>(). More...
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| template<class T > |
| std::enable_if< std::is_integral_v< T >, bool >::type constexpr | jau::equals (const T &a, const T &b) noexcept |
| | Returns true if both values are equal. More...
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| template<class T > |
| std::enable_if< std::is_integral_v< T >, bool >::type constexpr | jau::equals (const T &a, const T &b, const T &allowed_deviation) noexcept |
| | Returns true if both values are equal, i.e. More...
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| template<typename T , std::enable_if_t< std::is_integral_v< T > &&!std::is_unsigned_v< T >, bool > = true> |
| constexpr T | jau::gcd (T a, T b) noexcept |
| | Returns the greatest common divisor (GCD) of the two given integer values following Euclid's algorithm from Euclid's Elements ~300 BC, using the absolute positive value of given integers. More...
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| template<typename T , std::enable_if_t< std::is_integral_v< T > &&std::is_unsigned_v< T >, bool > = true> |
| constexpr nsize_t | jau::high_bit (T x) |
| | Return the index of the highest set bit w/ branching (loop) in O(n), actually O(n/2). More...
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| template<typename T , std::enable_if_t< std::is_integral_v< T > &&std::is_unsigned_v< T >, bool > = true> |
| constexpr bool | jau::is_power_of_2 (const T x) noexcept |
| | Power of 2 test (w/o branching ?) in O(1) More...
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| template<class T > |
| std::enable_if< std::is_integral_v< T >, bool >::type constexpr | jau::is_zero (const T &a) noexcept |
| | base_math: arithmetic types, i.e. More...
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| template<typename T , std::enable_if_t< std::is_integral_v< T >, bool > = true> |
| constexpr bool | jau::lcm_overflow (const T a, const T b, T &result) noexcept |
| | Integer overflow aware calculation of least common multiple (LCM) following Euclid's algorithm from Euclid's Elements ~300 BC. More...
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| template<typename T , std::enable_if_t< std::is_integral_v< T >, bool > = true> |
| constexpr bool | jau::mul_overflow (const T a, const T b, T &res) noexcept |
| | Integer overflow aware multiplication returning true if overflow occurred, otherwise false having the result stored in res. More...
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| template<typename T , typename U , std::enable_if_t< std::is_integral_v< T > &&std::is_unsigned_v< T > &&std::is_integral_v< U > &&std::is_unsigned_v< U >, bool > = true> |
| constexpr T | jau::round_down (T n, U align_to) |
| | Round down w/ branching in O(1) More...
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| constexpr uint32_t | jau::round_to_power_of_2 (const uint32_t n) |
| | If the given n is not is_power_of_2() return next_power_of_2(), otherwise return n unchanged. More...
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| template<typename T , typename U , std::enable_if_t< std::is_integral_v< T > &&std::is_unsigned_v< T > &&std::is_integral_v< U > &&std::is_unsigned_v< U >, bool > = true> |
| constexpr T | jau::round_up (const T n, const U align_to) |
| | Round up w/ branching in O(1) More...
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| template<typename T , std::enable_if_t< std::is_integral_v< T >, bool > = true> |
| constexpr bool | jau::sub_overflow (const T a, const T b, T &res) noexcept |
| | Integer overflow aware subtraction returning true if overflow occurred, otherwise false having the result stored in res. More...
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