This library provides extension methods and properties useful for memory handling, and bit manipulation, as well as array and buffer similar to JS typed arrays.
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Full Documentation: https://korlibs.soywiz.com/kmem/
// Array copying
val array = arrayOf("a", "b", "c", null, null)
arraycopy(array, 0, array, 1, 4)
// Array filling
val array = intArrayOf(1, 1, 1, 1, 1)
array.fill(2)
assertEquals(intArrayOf(2, 2, 2, 2, 2).toList(), array.toList())
// CLZ32
assertEquals(1, (0b11111111111111111111111111111110).toInt().countTrailingZeros())
// Byte Array building
val byteArray = buildByteArray {
append(1)
append(2)
append(byteArrayOf(3, 4, 5))
s32LE(6)
}
// Byte Array reading
val byteArray = buildByteArray { f32BE(1f).f32LE(2f) }
byteArray.read {
assertEquals(1f, f32BE())
assertEquals(2f, f32LE())
}
// Float16
assertEquals(+1.0, Float16.fromBits(0x3c00).toDouble())
// Power of Two
assertEquals(16, 10.nextPowerOfTwo)
assertEquals(16, 17.prevPowerOfTwo)
assertEquals(true, 1024.isPowerOfTwo)
// Aligned (multiple of)
assertEquals(false, 77.isAlignedTo(10))
assertEquals(70, 77.prevAlignedTo(10))
assertEquals(80, 77.nextAlignedTo(10))
// ByteArray indexed typed reading
val v = byteArray.readS32LE(10)
// Buffers
val mem = FBuffer.alloc(10)
for (n in 0 until 8) mem[n] = n
assertEquals(0x03020100, mem.getAlignedInt32(0))
assertEquals(0x07060504, mem.getAlignedInt32(1))def kmemVersion = "1.9.1"
repositories {
maven { url "https://dl.bintray.com/korlibs/korlibs" }
}
dependencies {
// For multiplatform projects
implementation "com.soywiz.korlibs.kmem:kmem:$kmemVersion"
// For JVM/Android only
implementation "com.soywiz.korlibs.kmem:kmem-jvm:$kmemVersion"
// For JS only
implementation "com.soywiz.korlibs.kmem:kmem-js:$kmemVersion"
}
// settigs.gradle
enableFeaturePreview('GRADLE_METADATA')