Promote bit query api to stable
This commit is contained in:
@@ -41,8 +41,8 @@ public actual fun Float.isFinite(): Boolean = !isInfinite() && !isNaN()
|
||||
/**
|
||||
* Counts the number of set bits in the binary representation of this [Int] number.
|
||||
*/
|
||||
@SinceKotlin("1.3")
|
||||
@ExperimentalStdlibApi
|
||||
@SinceKotlin("1.4")
|
||||
@WasExperimental(ExperimentalStdlibApi::class)
|
||||
public actual fun Int.countOneBits(): Int {
|
||||
// Hacker's Delight 5-1 algorithm
|
||||
var v = this
|
||||
@@ -57,8 +57,8 @@ public actual fun Int.countOneBits(): Int {
|
||||
/**
|
||||
* Counts the number of consecutive most significant bits that are zero in the binary representation of this [Int] number.
|
||||
*/
|
||||
@SinceKotlin("1.3")
|
||||
@ExperimentalStdlibApi
|
||||
@SinceKotlin("1.4")
|
||||
@WasExperimental(ExperimentalStdlibApi::class)
|
||||
@Suppress("DEPRECATION")
|
||||
@kotlin.internal.InlineOnly
|
||||
public actual inline fun Int.countLeadingZeroBits(): Int = kotlin.js.Math.clz32(this)
|
||||
@@ -66,8 +66,8 @@ public actual inline fun Int.countLeadingZeroBits(): Int = kotlin.js.Math.clz32(
|
||||
/**
|
||||
* Counts the number of consecutive least significant bits that are zero in the binary representation of this [Int] number.
|
||||
*/
|
||||
@SinceKotlin("1.3")
|
||||
@ExperimentalStdlibApi
|
||||
@SinceKotlin("1.4")
|
||||
@WasExperimental(ExperimentalStdlibApi::class)
|
||||
public actual fun Int.countTrailingZeroBits(): Int =
|
||||
// Hacker's Delight 5-4 algorithm for expressing countTrailingZeroBits with countLeadingZeroBits
|
||||
Int.SIZE_BITS - (this or -this).inv().countLeadingZeroBits()
|
||||
@@ -76,8 +76,8 @@ public actual fun Int.countTrailingZeroBits(): Int =
|
||||
* Returns a number having a single bit set in the position of the most significant set bit of this [Int] number,
|
||||
* or zero, if this number is zero.
|
||||
*/
|
||||
@SinceKotlin("1.3")
|
||||
@ExperimentalStdlibApi
|
||||
@SinceKotlin("1.4")
|
||||
@WasExperimental(ExperimentalStdlibApi::class)
|
||||
public actual fun Int.takeHighestOneBit(): Int =
|
||||
if (this == 0) 0 else 1.shl(Int.SIZE_BITS - 1 - countLeadingZeroBits())
|
||||
|
||||
@@ -85,8 +85,8 @@ public actual fun Int.takeHighestOneBit(): Int =
|
||||
* Returns a number having a single bit set in the position of the least significant set bit of this [Int] number,
|
||||
* or zero, if this number is zero.
|
||||
*/
|
||||
@SinceKotlin("1.3")
|
||||
@ExperimentalStdlibApi
|
||||
@SinceKotlin("1.4")
|
||||
@WasExperimental(ExperimentalStdlibApi::class)
|
||||
public actual fun Int.takeLowestOneBit(): Int =
|
||||
// Hacker's Delight 2-1 algorithm for isolating rightmost 1-bit
|
||||
this and -this
|
||||
@@ -126,16 +126,16 @@ public actual fun Int.rotateRight(bitCount: Int): Int =
|
||||
/**
|
||||
* Counts the number of set bits in the binary representation of this [Long] number.
|
||||
*/
|
||||
@SinceKotlin("1.3")
|
||||
@ExperimentalStdlibApi
|
||||
@SinceKotlin("1.4")
|
||||
@WasExperimental(ExperimentalStdlibApi::class)
|
||||
public actual fun Long.countOneBits(): Int =
|
||||
high.countOneBits() + low.countOneBits()
|
||||
|
||||
/**
|
||||
* Counts the number of consecutive most significant bits that are zero in the binary representation of this [Long] number.
|
||||
*/
|
||||
@SinceKotlin("1.3")
|
||||
@ExperimentalStdlibApi
|
||||
@SinceKotlin("1.4")
|
||||
@WasExperimental(ExperimentalStdlibApi::class)
|
||||
public actual fun Long.countLeadingZeroBits(): Int =
|
||||
when (val high = this.high) {
|
||||
0 -> Int.SIZE_BITS + low.countLeadingZeroBits()
|
||||
@@ -145,8 +145,8 @@ public actual fun Long.countLeadingZeroBits(): Int =
|
||||
/**
|
||||
* Counts the number of consecutive least significant bits that are zero in the binary representation of this [Long] number.
|
||||
*/
|
||||
@SinceKotlin("1.3")
|
||||
@ExperimentalStdlibApi
|
||||
@SinceKotlin("1.4")
|
||||
@WasExperimental(ExperimentalStdlibApi::class)
|
||||
public actual fun Long.countTrailingZeroBits(): Int =
|
||||
when (val low = this.low) {
|
||||
0 -> Int.SIZE_BITS + high.countTrailingZeroBits()
|
||||
@@ -157,8 +157,8 @@ public actual fun Long.countTrailingZeroBits(): Int =
|
||||
* Returns a number having a single bit set in the position of the most significant set bit of this [Long] number,
|
||||
* or zero, if this number is zero.
|
||||
*/
|
||||
@SinceKotlin("1.3")
|
||||
@ExperimentalStdlibApi
|
||||
@SinceKotlin("1.4")
|
||||
@WasExperimental(ExperimentalStdlibApi::class)
|
||||
public actual fun Long.takeHighestOneBit(): Long =
|
||||
when (val high = this.high) {
|
||||
0 -> Long(low.takeHighestOneBit(), 0)
|
||||
@@ -169,8 +169,8 @@ public actual fun Long.takeHighestOneBit(): Long =
|
||||
* Returns a number having a single bit set in the position of the least significant set bit of this [Long] number,
|
||||
* or zero, if this number is zero.
|
||||
*/
|
||||
@SinceKotlin("1.3")
|
||||
@ExperimentalStdlibApi
|
||||
@SinceKotlin("1.4")
|
||||
@WasExperimental(ExperimentalStdlibApi::class)
|
||||
public actual fun Long.takeLowestOneBit(): Long =
|
||||
when (val low = this.low) {
|
||||
0 -> Long(0, high.takeLowestOneBit())
|
||||
|
||||
Reference in New Issue
Block a user