implement numeric encodings, optimize

src/commonMain/kotlin/com/infendro/encoding/util/Math.kt

@@ -2,14 +2,16 @@ package com.infendro.encoding.util
 
 import kotlin.math.log2
 
-internal fun log2(
-    value: Int,
-) = log2(value.toDouble())
+internal fun log2(value: Int): Double =
+    log2(value.toDouble())
 
-internal fun gcd(
-    a: Int,
-    b: Int,
-): Int {
+internal fun Int.divCeil(n: Int): Int =
+    (this + n - 1) / n
+
+internal fun Int.align(n: Int): Int =
+    divCeil(n) * n
+
+internal fun gcd(a: Int, b: Int): Int {
     var x = a
     var y = b
     while (y != 0) {
@@ -20,9 +22,6 @@ internal fun gcd(
     return x
 }
 
-internal fun lcm(
-    a: Int,
-    b: Int,
-): Int {
+internal fun lcm(a: Int, b: Int): Int {
     return (a * b) / gcd(a, b)
 }