Basic math functions¶

`abs` function¶

template <typename T1, KFR_ENABLE_IF(is_numeric<T1>)>
T1 abs(const T1 &x)

Returns the absolute value of x.

`absmax` function¶

template <typename T1, typename T2,
          KFR_ENABLE_IF(is_numeric_args<T1, T2>),
          typename Tout = std::common_type_t<T1, T2>>
Tout absmax(const T1 &x, const T2 &y)

Returns the greater in magnitude of two values.

`absmin` function¶

template <typename T1, typename T2,
          KFR_ENABLE_IF(is_numeric_args<T1, T2>),
          typename Tout = std::common_type_t<T1, T2>>
Tout absmin(const T1 &x, const T2 &y)

Returns the smaller in magnitude of two values.

`add` function¶

template <typename T1, typename T2, typename... Ts,
          KFR_ENABLE_IF(is_numeric_args<T1, T2, Ts...>)>
constexpr std::common_type_t<T1, T2, Ts...>
add(const T1 &x, const T2 &y, const Ts &...rest)

Returns sum of all the arguments passed to a function.

`bitwiseand` function¶

template <typename T1, typename T2>
std::common_type_t<T1, T2> bitwiseand(const T1 &x,
                                      const T2 &y)

Bitwise And

`bitwiseandnot` function¶

template <typename T1, typename T2>
std::common_type_t<T1, T2> bitwiseandnot(const T1 &x,
                                         const T2 &y)

Bitwise And-Not

`bitwisenot` function¶

template <typename T1> T1 bitwisenot(const T1 &x)

Bitwise Not

`bitwiseor` function¶

template <typename T1, typename T2>
std::common_type_t<T1, T2> bitwiseor(const T1 &x,
                                     const T2 &y)

Bitwise Or

`bitwisexor` function¶

template <typename T1, typename T2>
std::common_type_t<T1, T2> bitwisexor(const T1 &x,
                                      const T2 &y)

Bitwise Xor (Exclusive Or)

`clamp` function¶

template <typename T1, typename T2, typename T3,
          KFR_ENABLE_IF(is_numeric_args<T1, T2, T3>),
          typename Tout = std::common_type_t<T1, T2, T3>>
Tout clamp(const T1 &x, const T2 &lo, const T3 &hi)

Returns the first argument clamped to a range [lo, hi]

template <typename T1, typename T2,
          KFR_ENABLE_IF(is_numeric_args<T1, T2>),
          typename Tout = std::common_type_t<T1, T2>>
Tout clamp(const T1 &x, const T2 &hi)

Returns the first argument clamped to a range [0, hi]

`cub` function¶

template <typename T1, KFR_ENABLE_IF(is_numeric<T1>)>
constexpr inline T1 cub(const T1 &x)

Returns cube of x.

`div` function¶

template <typename T1, typename T2,
          typename Tout = std::common_type_t<T1, T2>>
Tout div(const T1 &x, const T2 &y)

Division

`fmadd` function¶

template <typename T1, typename T2, typename T3>
constexpr std::common_type_t<T1, T2, T3>
fmadd(const T1 &x, const T2 &y, const T3 &z)

Fused Multiply-Add

`fmsub` function¶

template <typename T1, typename T2, typename T3>
constexpr std::common_type_t<T1, T2, T3>
fmsub(const T1 &x, const T2 &y, const T3 &z)

Fused Multiply-Sub

`horner` function¶

template <typename T1, typename... Ts,
          KFR_ENABLE_IF(is_numeric_args<T1, Ts...>)>
constexpr std::common_type_t<T1, Ts...>
horner(const T1 &x, const Ts &...c)

Calculate polynomial using Horner's method

horner(x, 1, 2, 3) is equivalent to \(3x^2 + 2x + 1\)

`horner_even` function¶

template <typename T1, typename... Ts,
          KFR_ENABLE_IF(is_numeric_args<T1, Ts...>)>
constexpr std::common_type_t<T1, Ts...>
horner_even(const T1 &x, const Ts &...c)

Calculate polynomial using Horner's method (even powers)

horner_even(x, 1, 2, 3) is equivalent to \(3x^4 + 2x^2 + 1\)

`horner_odd` function¶

template <typename T1, typename... Ts,
          KFR_ENABLE_IF(is_numeric_args<T1, Ts...>)>
constexpr std::common_type_t<T1, Ts...>
horner_odd(const T1 &x, const Ts &...c)

Calculate polynomial using Horner's method (odd powers)

horner_odd(x, 1, 2, 3) is equivalent to \(3x^5 + 2x^3 + 1x\)

`ipow` function¶

template <typename T>
constexpr inline T ipow(const T &x, int base)

Raise x to the power base \(x^{base}\)

CHECK( ipow( 10, 3 ) == 1000 );
CHECK( ipow( 0.5, 2 ) == 0.25 );

`max` function¶

template <typename T1, typename T2,
          KFR_ENABLE_IF(is_numeric_args<T1, T2>),
          typename Tout = std::common_type_t<T1, T2>>
Tout max(const T1 &x, const T2 &y)

Returns the greater of two values.

`min` function¶

template <typename T1, typename T2,
          KFR_ENABLE_IF(is_numeric_args<T1, T2>),
          typename Tout = std::common_type_t<T1, T2>>
Tout min(const T1 &x, const T2 &y)

Returns the smaller of two values.

`mix` function¶

template <typename T1, typename T2, typename T3,
          KFR_ENABLE_IF(is_numeric_args<T1, T2, T3>)>
constexpr std::common_type_t<T1, T2, T3>
mix(const T1 &c, const T2 &x, const T3 &y)

Linear blend of x and y (c must be in the range 0...+1) Returns x + ( y - x ) * c

`mixs` function¶

template <typename T1, typename T2, typename T3,
          KFR_ENABLE_IF(is_numeric_args<T1, T2, T3>)>
constexpr std::common_type_t<T1, T2, T3>
mixs(const T1 &c, const T2 &x, const T3 &y)

Linear blend of x and y (c must be in the range -1...+1)

`mod` function¶

template <typename T1, typename T2,
          typename Tout = std::common_type_t<T1, T2>>
Tout mod(const T1 &x, const T2 &y)

Modulo

`mul` function¶

template <typename T1, typename T2, typename... Ts>
constexpr std::common_type_t<T1, T2, Ts...>
mul(const T1 &x, const T2 &y, const Ts &...rest)

Returns product of all the arguments passed to a function.

`neg` function¶

template <typename T1> inline T1 neg(const T1 &x)

Negation

`reciprocal` function¶

template <typename T> constexpr T reciprocal(const T &x)

Calculate Multiplicative Inverse of x Returns 1/x

`rem` function¶

template <typename T1, typename T2,
          typename Tout = std::common_type_t<T1, T2>>
Tout rem(const T1 &x, const T2 &y)

Remainder

`rol` function¶

template <typename T1, typename T2>
T1 rol(const T1 &left, const T2 &right)

Bitwise Left Rotate

`ror` function¶

template <typename T1, typename T2>
T1 ror(const T1 &left, const T2 &right)

Bitwise Right Rotate

`select` function¶

template <
    typename T1, size_t N, typename T2, typename T3,
    KFR_ENABLE_IF(is_numeric_args<T1, T2, T3>),
    typename Tout = subtype<std::common_type_t<T2, T3>>>
vec<Tout, N> select(const mask<T1, N> &m, const T2 &x,
                    const T3 &y)

Returns x if m is true, otherwise return y. Order of the arguments is same as in ternary operator.

return m ? x : y

`shl` function¶

template <typename T1, typename T2>
T1 shl(const T1 &left, const T2 &right)

Bitwise Left shift

`shr` function¶

template <typename T1, typename T2>
T1 shr(const T1 &left, const T2 &right)

Bitwise Right shift

`sqr` function¶

template <typename T1, KFR_ENABLE_IF(is_numeric<T1>)>
constexpr inline T1 sqr(const T1 &x)

Returns square of x.

`sqrsum` function¶

template <typename T1, typename... Ts>
constexpr inline std::common_type_t<T1, Ts...>
sqrsum(const T1 &x, const Ts &...rest)

Return square of the sum of all arguments

CHECK(sqrsum(1,2,3) == 36);

`sqrt` function¶

template <typename T1, KFR_ENABLE_IF(is_numeric<T1>)>
flt_type<T1> sqrt(const T1 &x)

Returns the positive square root of the x. \(\sqrt{x}\)

`swapbyteorder` function¶

template <typename T> T swapbyteorder(const T &x)

Swap byte order

Auto-generated from sources, Revision 5191a48df06ea47104ca67db19fa82058d09c20a, https://github.com/kfrlib/kfr/blob/5191a48df06ea47104ca67db19fa82058d09c20a/include/kfr/

Basic math functions¶

abs function¶

absmax function¶

absmin function¶

add function¶

bitwiseand function¶

bitwiseandnot function¶

bitwisenot function¶

bitwiseor function¶

bitwisexor function¶

clamp function¶

cub function¶

div function¶

fmadd function¶

fmsub function¶

horner function¶

horner_even function¶

horner_odd function¶

ipow function¶

max function¶

min function¶

mix function¶

mixs function¶

mod function¶

mul function¶

neg function¶

reciprocal function¶

rem function¶

rol function¶

ror function¶

select function¶

shl function¶

shr function¶

sqr function¶

sqrsum function¶

sqrt function¶

swapbyteorder function¶