IndexOf< T >() [3/3]

static int System.Array.IndexOf< T > ( T[] array, T value, int startIndex, int count )

inlinestatic

Definition at line 1955 of file Array.cs.

    {
        if (array == null)
        {
            ThrowHelper.ThrowArgumentNullException(ExceptionArgument.array);
        }
        if ((uint)startIndex > (uint)array.Length)
        {
            ThrowHelper.ThrowStartIndexArgumentOutOfRange_ArgumentOutOfRange_Index();
        }
        if ((uint)count > (uint)(array.Length - startIndex))
        {
            ThrowHelper.ThrowCountArgumentOutOfRange_ArgumentOutOfRange_Count();
        }
        if (RuntimeHelpers.IsBitwiseEquatable<T>())
        {
            if (Unsafe.SizeOf<T>() == 1)
            {
                int num = SpanHelpers.IndexOf(ref Unsafe.Add(ref MemoryMarshal.GetArrayDataReference(Unsafe.As<byte[]>(array)), startIndex), Unsafe.As<T, byte>(ref value), count);
                return ((num >= 0) ? startIndex : 0) + num;
            }
            if (Unsafe.SizeOf<T>() == 2)
            {
                int num2 = SpanHelpers.IndexOf(ref Unsafe.Add(ref MemoryMarshal.GetArrayDataReference(Unsafe.As<char[]>(array)), startIndex), Unsafe.As<T, char>(ref value), count);
                return ((num2 >= 0) ? startIndex : 0) + num2;
            }
            if (Unsafe.SizeOf<T>() == 4)
            {
                int num3 = SpanHelpers.IndexOf(ref Unsafe.Add(ref MemoryMarshal.GetArrayDataReference(Unsafe.As<int[]>(array)), startIndex), Unsafe.As<T, int>(ref value), count);
                return ((num3 >= 0) ? startIndex : 0) + num3;
            }
            if (Unsafe.SizeOf<T>() == 8)
            {
                int num4 = SpanHelpers.IndexOf(ref Unsafe.Add(ref MemoryMarshal.GetArrayDataReference(Unsafe.As<long[]>(array)), startIndex), Unsafe.As<T, long>(ref value), count);
                return ((num4 >= 0) ? startIndex : 0) + num4;
            }
        }
        return EqualityComparer<T>.Default.IndexOf(array, value, startIndex, count);
    }

References System.array, System.count, System.Runtime.InteropServices.MemoryMarshal.GetArrayDataReference(), System.SpanHelpers.IndexOf(), System.startIndex, System.T, System.ThrowHelper.ThrowArgumentNullException(), System.ThrowHelper.ThrowCountArgumentOutOfRange_ArgumentOutOfRange_Count(), System.ThrowHelper.ThrowStartIndexArgumentOutOfRange_ArgumentOutOfRange_Index(), and System.value.