Contains() [2/2]

static unsafe bool System.SpanHelpers.Contains ( ref char searchSpace, char value, int length )

inlinestatic

Definition at line 1698 of file SpanHelpers.cs.

    {
        fixed (char* ptr = &searchSpace)
        {
            char* ptr2 = ptr;
            char* ptr3 = ptr2 + length;
            if (Vector.IsHardwareAccelerated && length >= Vector<ushort>.Count * 2)
            {
                int num = ((int)ptr2 & (Unsafe.SizeOf<Vector<ushort>>() - 1)) / 2;
                length = (Vector<ushort>.Count - num) & (Vector<ushort>.Count - 1);
            }
            while (true)
            {
                if (length >= 4)
                {
                    length -= 4;
                    if (value == *ptr2 || value == ptr2[1] || value == ptr2[2] || value == ptr2[3])
                    {
                        break;
                    }
                    ptr2 += 4;
                    continue;
                }
                while (length > 0)
                {
                    length--;
                    if (value == *ptr2)
                    {
                        goto end_IL_0079;
                    }
                    ptr2++;
                }
                if (Vector.IsHardwareAccelerated && ptr2 < ptr3)
                {
                    length = (int)((ptr3 - ptr2) & ~(Vector<ushort>.Count - 1));
                    Vector<ushort> left = new Vector<ushort>(value);
                    while (length > 0)
                    {
                        Vector<ushort> other = Vector.Equals(left, Unsafe.Read<Vector<ushort>>(ptr2));
                        if (!Vector<ushort>.Zero.Equals(other))
                        {
                            goto end_IL_0079;
                        }
                        ptr2 += Vector<ushort>.Count;
                        length -= Vector<ushort>.Count;
                    }
                    if (ptr2 < ptr3)
                    {
                        length = (int)(ptr3 - ptr2);
                        continue;
                    }
                }
                return false;
                continue;
                end_IL_0079:
                break;
            }
            return true;
        }
    }

References System.Collections.Generic.Dictionary< TKey, TValue >.Count, System.Numerics.Vector< T >.Equals(), System.Numerics.Vector< T >.IsHardwareAccelerated, System.length, System.other, and System.value.