GetInt32() [1/2]

static int System.Security.Cryptography.RandomNumberGenerator.GetInt32 ( int fromInclusive, int toExclusive )

inlinestaticinherited

Definition at line 90 of file RandomNumberGenerator.cs.

    {
        if (fromInclusive >= toExclusive)
        {
            throw new ArgumentException(System.SR.Argument_InvalidRandomRange);
        }
        uint num = (uint)(toExclusive - fromInclusive - 1);
        if (num == 0)
        {
            return fromInclusive;
        }
        uint num2 = num;
        num2 |= num2 >> 1;
        num2 |= num2 >> 2;
        num2 |= num2 >> 4;
        num2 |= num2 >> 8;
        num2 |= num2 >> 16;
        Span<uint> span = stackalloc uint[1];
        uint num3;
        do
        {
            RandomNumberGeneratorImplementation.FillSpan(MemoryMarshal.AsBytes(span));
            num3 = num2 & span[0];
        }
        while (num3 > num);
        return (int)num3 + fromInclusive;
    }

References System.SR.Argument_InvalidRandomRange, and System.Security.Cryptography.RandomNumberGeneratorImplementation.FillSpan().

Referenced by System.Security.Cryptography.RandomNumberGenerator.GetInt32().