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package blurhash
import "math"
func linearTosRGB(value float64) int {
v := math.Max(0, math.Min(1, value))
if v <= 0.0031308 {
return int(v*12.92*255 + 0.5)
}
return int((1.055*math.Pow(v, 1/2.4)-0.055)*255 + 0.5)
}
func sRGBToLinear(value int) float64 {
v := float64(value) / 255
if v <= 0.04045 {
return v / 12.92
}
return math.Pow((v+0.055)/1.055, 2.4)
}
func signPow(value, exp float64) float64 {
return math.Copysign(math.Pow(math.Abs(value), exp), value)
}
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