fix32

package
v1.0.2 Latest Latest
Warning

This package is not in the latest version of its module.

 Go to latest Published: May 28, 2024 License: MIT Imports: 3 Imported by: 0

Documentation

Index

Constants

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

Constants

View Source 
const (
	MinValue int32 = -2147483648
	MaxValue int32 = 2147483647
)
View Source 
const (
	RcpLn2         = int32(0x171547652 >> 16) // 1.0 / log(2.0) ~= 1.4426950408889634
	RcpLog2E       = int32(2977044471 >> 16)  // 1.0 / log2(e) ~= 0.6931471805599453
	RcpTwoPi int32 = 683565276                // 1.0 / (4.0 * 0.5 * pi);  -- the 4.0 factor converts directly to s2.30
)

Private constants

Variables

This section is empty.

Functions

func Abs 

func Abs(v int32) int32

Abs Returns the absolute (positive) value of v.

func Acos 

func Acos(x int32) int32

func AcosFast 

func AcosFast(x int32) int32

func AcosFastest 

func AcosFastest(x int32) int32

func Add 

func Add(a, b int32) int32

Add Adds the two FP numbers together.

func Asin 

func Asin(x int32) int32

func AsinFast 

func AsinFast(x int32) int32

func AsinFastest 

func AsinFastest(x int32) int32

func Atan 

func Atan(x int32) int32

func Atan2 

func Atan2(y, x int32) int32

func Atan2Div 

func Atan2Div(y, x int32) int32

func Atan2DivFast 

func Atan2DivFast(y, x int32) int32

func Atan2DivFastest 

func Atan2DivFastest(y, x int32) int32

func Atan2Fast 

func Atan2Fast(y, x int32) int32

func Atan2Fastest 

func Atan2Fastest(y, x int32) int32

func AtanFast 

func AtanFast(x int32) int32

func AtanFastest 

func AtanFastest(x int32) int32

func Ceil 

func Ceil(v int32) int32

Ceil Round up to nearest integer.

func CeilToInt 

func CeilToInt(v int32) int32

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

func Clamp 

func Clamp(a, min, max int32) int32

Clamp Returns the value clamped between min and max.

func Cos 

func Cos(x int32) int32

func CosFast 

func CosFast(x int32) int32

func CosFastest 

func CosFastest(x int32) int32

func Div 

func Div(a, b int32) int32

Div Calculates division approximation.

func DivFast 

func DivFast(a, b int32) int32

DivFast Calculates division approximation.

func DivFastest 

func DivFastest(a, b int32) int32

DivFastest Calculates division approximation.

func DivPrecise 

func DivPrecise(a, b int32) int32

DivPrecise Divides two FP values.

func Exp 

func Exp(x int32) int32

func Exp2 

func Exp2(x int32) int32

Exp2 Calculates the base 2 exponent.

func Exp2Fast 

func Exp2Fast(x int32) int32

Exp2Fast Calculates the base 2 exponent.

func Exp2Fastest 

func Exp2Fastest(x int32) int32

Exp2Fastest Calculates the base 2 exponent.

func ExpFast 

func ExpFast(x int32) int32

func ExpFastest 

func ExpFastest(x int32) int32

func Floor 

func Floor(v int32) int32

Floor Round down to nearest integer.

func FloorToInt 

func FloorToInt(v int32) int32

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

func Fract 

func Fract(v int32) int32

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

func FromFloat32 

func FromFloat32(v float32) int32

FromFloat32 Converts a float32 to a fp-point value.

func FromFloat64 

func FromFloat64(v float64) int32

FromFloat64 Converts a float64 to a fp-point value.

func FromInt32 

func FromInt32(v int32) int32

FromInt32 Converts an integer to a fp-point value.

func Lerp 

func Lerp(a, b, t int32) int32

Lerp Linearly interpolate from a to b by t.

func Log 

func Log(x int32) int32

func Log2 

func Log2(x int32) int32

func Log2Fast 

func Log2Fast(x int32) int32

func Log2Fastest 

func Log2Fastest(x int32) int32

func LogFast 

func LogFast(x int32) int32

func LogFastest 

func LogFastest(x int32) int32

func Max 

func Max(a, b int32) int32

Max Returns the maximum of the two values.

func Min 

func Min(a, b int32) int32

Min Returns the minimum of the two values.

func Mod 

func Mod(a, b int32) int32

Mod Divides two FP values and returns the modulus.

func Mul 

func Mul(a, b int32) int32

Mul Multiplies two FP values together.

func Nabs 

func Nabs(v int32) int32

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

func Nlz 

func Nlz(v uint32) int32

func Pow 

func Pow(x, exponent int32) int32

Pow Calculates x to the power of the exponent.

func PowFast 

func PowFast(x, exponent int32) int32

PowFast Calculates x to the power of the exponent.

func PowFastest 

func PowFastest(x, exponent int32) int32

PowFastest Calculates x to the power of the exponent.

func RSqrt 

func RSqrt(x int32) int32

RSqrt Calculates the reciprocal square root.

func RSqrtFast 

func RSqrtFast(x int32) int32

RSqrtFast Calculates the reciprocal square root.

func RSqrtFastest 

func RSqrtFastest(x int32) int32

RSqrtFastest Calculates the reciprocal square root.

func Rcp 

func Rcp(x int32) int32

Rcp Calculates reciprocal approximation.

func RcpFast 

func RcpFast(x int32) int32

RcpFast Calculates reciprocal approximation.

func RcpFastest 

func RcpFastest(x int32) int32

RcpFastest Calculates reciprocal approximation.

func Round 

func Round(v int32) int32

Round to nearest integer.

func RoundToInt 

func RoundToInt(v int32) int32

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

func Sign 

func Sign(v int32) int32

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

func Sin 

func Sin(x int32) int32

func SinFast 

func SinFast(x int32) int32

func SinFastest 

func SinFastest(x int32) int32

func Sqrt 

func Sqrt(x int32) int32

func SqrtFast 

func SqrtFast(x int32) int32

func SqrtFastest 

func SqrtFastest(x int32) int32

func SqrtPrecise 

func SqrtPrecise(a int32) int32

SqrtPrecise Calculates the square root of the given number.

func Sub 

func Sub(a, b int32) int32

Sub Subtracts the two FP numbers from each other.

func Tan 

func Tan(x int32) int32

func TanFast 

func TanFast(x int32) int32

func TanFastest 

func TanFastest(x int32) int32

func ToFloat32 

func ToFloat32(v int32) float32

ToFloat32 Converts a FP value into a float.

func ToFloat64 

func ToFloat64(v int32) float64

ToFloat64 Converts a fixed-point value into a double.

func ToString 

func ToString(v int32) string

ToString Converts the value to a human readable string.

func UnitSin 

func UnitSin(z int32) int32

func UnitSinFast 

func UnitSinFast(z int32) int32

func UnitSinFastest 

func UnitSinFastest(z int32) int32

Types

This section is empty.

Source Files

View all Source files

Jump to

Keyboard shortcuts

? : This menu
/ : Search site
f or F : Jump to
y or Y : Canonical URL
go.dev uses cookies from Google to deliver and enhance the quality of its services and to analyze traffic. Learn more.