Scalar math and comparisons

abs, clamp and linear interpolation of numbers, and comparisons with a tolerance.

Transform 1

abs

unsigned long long abs(unsigned long long a)

Absolute value of an unsigned integer, i.e. the value itself.

Compute 13

abs

11 overloads

float abs(float a)

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Absolute value of a float (std::abs).

double abs(double a)

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Absolute value of a double (std::abs).

char abs(char a)

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Absolute value of a signed char.

short abs(short a)

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Absolute value of a signed short.

int abs(int a)

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Absolute value of a signed int.

long abs(long a)

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Absolute value of a signed long.

long long abs(long long a)

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Absolute value of a signed long long.

unsigned char abs(unsigned char a)

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Absolute value of an unsigned integer, i.e. the value itself.

unsigned short abs(unsigned short a)

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Absolute value of an unsigned integer, i.e. the value itself.

unsigned int abs(unsigned int a)

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Absolute value of an unsigned integer, i.e. the value itself.

unsigned long abs(unsigned long a)

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Absolute value of an unsigned integer, i.e. the value itself.

clamp

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template <typename T1, typename T2>
T1 clamp(T1 x, T2 x_min, T2 x_max)

Clamps x to the interval [x_min, x_max].

interpolation_linear

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template <typename T>
T interpolation_linear(float alpha, T const& value_0, T const& value_1)

Linear interpolation (1-alpha)*value_0 + alpha*value_1, with alpha expected in [0,1].

Access 10

is_equal

10 overloads

bool is_equal(float a, float b)

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Approximate equality of two floats: true if |a-b| <= 1e-5.

bool is_equal(double a, double b)

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Approximate equality of two doubles: true if |a-b| <= 1e-7.

bool is_equal(float a, double b)

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Approximate equality of a float and a double, compared in float precision with tolerance 1e-5.

bool is_equal(double a, float b)

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Approximate equality of a double and a float, compared in float precision with tolerance 1e-5.

template <typename T1, typename T2>
bool is_equal(T1 const& a, T2 const& b)

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Generic fallback equality test using operator== (exact comparison).

template <typename T1, typename T2, size_t N>
bool is_equal(std::array<T1,N> const& a, std::array<T2,N> const& b)

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Element-wise equality of two std::array, approximate for floating-point elements.

template <typename T1, typename T2>
bool is_equal(std::vector<T1> const& a, std::vector<T2> const& b)

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Element-wise equality of two std::vector, approximate for floating-point elements; false if sizes differ.

bool is_equal(std::string const& a, std::string const& b)

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Exact equality of two strings.

bool is_equal(std::string const& a, char const* b)

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Exact equality of a string and a C-string.

bool is_equal(char const* a, std::string const& b)

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Exact equality of a C-string and a string.