private import std.bitmanip : nativeToLittleEndian, littleEndianToNative;

alias littleEndianInv = nativeToLittleEndian;

uint littleEndian(in ubyte[] input) @safe pure nothrow @nogc
in
{
    assert(input.length == uint.sizeof);
}
body
{
    ubyte[uint.sizeof] buf = input;
    return littleEndianToNative!uint(buf);
}

unittest
{
    ubyte[] test0 = [0, 0, 0, 0];
    ubyte[] test1 = [86, 75, 30, 9];
    ubyte[] test2 = [255, 255, 255, 250];
    assert(littleEndian(test0) == 0x00000000);
    assert(littleEndian(test1) == 0x091e4b56);
    assert(littleEndian(test2) == 0xfaffffff);
}