fix64

package
v1.0.2 Latest Latest
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 Go to latest Published: May 28, 2024 License: MIT Imports: 2 Imported by: 0

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Index

Constants

View Source 
const (
	Shift        int32 = 32
	FractionMask int64 = (1 << Shift) - 1
	IntegerMask        = ^FractionMask
)
View Source 
const (
	Zero   int64 = 0
	Neg1   int64 = -1 << Shift
	One    int64 = 1 << Shift
	Two    int64 = 2 << Shift
	Three  int64 = 3 << Shift
	Four   int64 = 4 << Shift
	Half         = One >> 1
	Pi     int64 = 13493037705 // (int64)(Math.PI * 65536.0) << 16;
	Pi2    int64 = 26986075409
	PiHalf int64 = 6746518852
	E      int64 = 11674931555
)

Constants

View Source 
const (
	MinValue int64 = -9223372036854775808
	MaxValue int64 = 9223372036854775807
)
View Source 
const (
	RcpLn2    int64 = 0x171547652 // 1.0 / log(2.0) ~= 1.4426950408889634
	RcpLog2E  int64 = 2977044471  // 1.0 / log2(e) ^= 0.6931471805599453
	RcpHalfPi int32 = 683565276   // 1.0 / (4.0 * 0.5 * Math.PI);  // the 4.0 factor converts directly to s2.30
)

Private constants

Variables

This section is empty.

Functions

func Abs 

func Abs(v int64) int64

Abs Returns the absolute (positive) value of v.

func Acos 

func Acos(x int64) int64

func AcosFast 

func AcosFast(x int64) int64

func AcosFastest 

func AcosFastest(x int64) int64

func Add 

func Add(a, b int64) int64

Add Adds the two FP numbers together.

func Asin 

func Asin(x int64) int64

func AsinFast 

func AsinFast(x int64) int64

func AsinFastest 

func AsinFastest(x int64) int64

func Atan 

func Atan(x int64) int64

func Atan2 

func Atan2(y, x int64) int64

func Atan2Fast 

func Atan2Fast(y, x int64) int64

func Atan2Fastest 

func Atan2Fastest(y, x int64) int64

func AtanFast 

func AtanFast(x int64) int64

func AtanFastest 

func AtanFastest(x int64) int64

func Ceil 

func Ceil(v int64) int64

Ceil Round up to nearest integer.

func CeilToInt 

func CeilToInt(v int64) int32

CeilToInt Converts a fp-point value into an integer by rounding it up to nearest integer.

func Clamp 

func Clamp(a, min, max int64) int64

Clamp Returns the value clamped between min and max.

func Cos 

func Cos(x int64) int64

func CosFast 

func CosFast(x int64) int64

func CosFastest 

func CosFastest(x int64) int64

func Div 

func Div(a, b int64) int64

Div Calculates division approximation.

func DivFast 

func DivFast(a, b int64) int64

DivFast Calculates division approximation.

func DivFastest 

func DivFastest(a, b int64) int64

DivFastest Calculates division approximation.

func DivPrecise 

func DivPrecise(argA, argB int64) int64

DivPrecise Divides two FP values.

func Exp 

func Exp(x int64) int64

func Exp2 

func Exp2(x int64) int64

Exp2 Calculates the base 2 exponent.

func Exp2Fast 

func Exp2Fast(x int64) int64

Exp2Fast Calculates the base 2 exponent.

func Exp2Fastest 

func Exp2Fastest(x int64) int64

Exp2Fastest Calculates the base 2 exponent.

func ExpFast 

func ExpFast(x int64) int64

func ExpFastest 

func ExpFastest(x int64) int64

func Floor 

func Floor(v int64) int64

Floor Round down to nearest integer.

func FloorToInt 

func FloorToInt(v int64) int32

FloorToInt Converts a fp-point value into an integer by rounding it down to nearest integer.

func Fract 

func Fract(v int64) int64

Fract Returns the fractional part of x. Equal to 'x - floor(x)'.

func FromFloat32 

func FromFloat32(v float32) int64

FromFloat32 Converts a float32 to a fp-point value.

func FromFloat64 

func FromFloat64(v float64) int64

FromFloat64 Converts a float64 to a fp-point value.

func FromInt32 

func FromInt32(v int32) int64

FromInt32 Converts an integer to a fp-point value.

func FromInt64 

func FromInt64(v int64) int64

FromInt64 Converts an integer to a fp-point value.

func Lerp 

func Lerp(a, b, t int64) int64

Lerp Linearly interpolate from a to b by t.

func Log 

func Log(x int64) int64

Log Natural logarithm (base e).

func Log2 

func Log2(x int64) int64

func Log2Fast 

func Log2Fast(x int64) int64

func Log2Fastest 

func Log2Fastest(x int64) int64

func LogFast 

func LogFast(x int64) int64

LogFast Natural logarithm (base e).

func LogFastest 

func LogFastest(x int64) int64

LogFastest Natural logarithm (base e).

func Max 

func Max(a, b int64) int64

Max Returns the maximum of the two values.

func Min 

func Min(a, b int64) int64

Min Returns the minimum of the two values.

func Mod 

func Mod(a, b int64) int64

Mod Divides two FP values and returns the modulus.

func Mul 

func Mul(a, b int64) int64

Mul Multiplies two FP values together.

func MulIntLongLong 

func MulIntLongLong(a int32, b int64) int64

func MulIntLongLow 

func MulIntLongLow(a int32, b int64) int32

func Nabs 

func Nabs(v int64) int64

Nabs Negative absolute value (returns -abs(x)).

func Pow 

func Pow(x, exponent int64) int64

Pow Calculates x to the power of the exponent.

func PowFast 

func PowFast(x, exponent int64) int64

PowFast Calculates x to the power of the exponent.

func PowFastest 

func PowFastest(x, exponent int64) int64

PowFastest Calculates x to the power of the exponent.

func RSqrt 

func RSqrt(x int64) int64

RSqrt Calculates the reciprocal square root.

func RSqrtFast 

func RSqrtFast(x int64) int64

RSqrtFast Calculates the reciprocal square root.

func RSqrtFastest 

func RSqrtFastest(x int64) int64

RSqrtFastest Calculates the reciprocal square root.

func Rcp 

func Rcp(x int64) int64

Rcp Calculates reciprocal approximation.

func RcpFast 

func RcpFast(x int64) int64

RcpFast Calculates reciprocal approximation.

func RcpFastest 

func RcpFastest(x int64) int64

RcpFastest Calculates reciprocal approximation.

func Round 

func Round(v int64) int64

Round to nearest integer.

func RoundToInt 

func RoundToInt(v int64) int32

RoundToInt Converts a fp-point value into an integer by rounding it to nearest integer.

func Sign 

func Sign(v int64) int32

Sign Returns the sign of the value (-1 if negative, 0 if zero, 1 if positive).

func Sin 

func Sin(x int64) int64

func SinFast 

func SinFast(x int64) int64

func SinFastest 

func SinFastest(x int64) int64

func Sqrt 

func Sqrt(x int64) int64

func SqrtFast 

func SqrtFast(x int64) int64

func SqrtFastest 

func SqrtFastest(x int64) int64

func SqrtPrecise 

func SqrtPrecise(a int64) int64

SqrtPrecise Calculates the square root of the given number.

func Sub 

func Sub(a, b int64) int64

Sub Subtracts the two FP numbers from each other.

func Tan 

func Tan(x int64) int64

func TanFast 

func TanFast(x int64) int64

func TanFastest 

func TanFastest(x int64) int64

func ToFloat32 

func ToFloat32(v int64) float32

ToFloat32 Converts a FP value into a float.

func ToFloat64 

func ToFloat64(v int64) float64

ToFloat64 Converts a fp-point value into a float64.

func ToString 

func ToString(v int64) string

ToString Converts the value to a human readable string.

Types

This section is empty.

Source Files

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