Calculate the probability of normal distribution X according to the standard normal distribution table

float X[] = {
    0.00,0.01,0.02,0.03,0.04,0.05,0.06,0.07,0.08,0.09,
    0.10,0.11,0.12,0.13,0.14,0.15,0.16,0.17,0.18,0.19,
    0.20,0.21,0.22,0.23,0.24,0.25,0.26,0.27,0.28,0.29,
    0.30,0.31,0.32,0.33,0.34,0.35,0.36,0.37,0.38,0.39,
    0.40,0.41,0.42,0.43,0.44,0.45,0.46,0.47,0.48,0.49,
    0.50,0.51,0.52,0.53,0.54,0.55,0.56,0.57,0.58,0.59,
    0.60,0.61,0.62,0.63,0.64,0.65,0.66,0.67,0.68,0.69,
    0.70,0.71,0.72,0.73,0.74,0.75,0.76,0.77,0.78,0.79,
    0.80,0.81,0.82,0.83,0.84,0.85,0.86,0.87,0.88,0.89,
    0.90,0.91,0.92,0.93,0.94,0.95,0.96,0.97,0.98,0.99,
    1.00,1.01,1.02,1.03,1.04,1.05,1.06,1.07,1.08,1.09,
    1.10,1.11,1.12,1.13,1.14,1.15,1.16,1.17,1.18,1.19,
    1.20,1.21,1.22,1.23,1.24,1.25,1.26,1.27,1.28,1.29,
    1.30,1.31,1.32,1.33,1.34,1.35,1.36,1.37,1.38,1.39,
    1.40,1.41,1.42,1.43,1.44,1.45,1.46,1.47,1.48,1.49,
    1.50,1.51,1.52,1.53,1.54,1.55,1.56,1.57,1.58,1.59,
    1.60,1.61,1.62,1.63,1.64,1.65,1.66,1.67,1.68,1.69,
    1.70,1.71,1.72,1.73,1.74,1.75,1.76,1.77,1.78,1.79,
    1.80,1.81,1.82,1.83,1.84,1.85,1.86,1.87,1.88,1.89,
    1.90,1.91,1.92,1.93,1.94,1.95,1.96,1.97,1.98,1.99,
    2.00,2.01,2.02,2.03,2.04,2.05,2.06,2.07,2.08,2.09,
    2.10,2.11,2.12,2.13,2.14,2.15,2.16,2.17,2.18,2.19,
    2.20,2.21,2.22,2.23,2.24,2.25,2.26,2.27,2.28,2.29,
    2.30,2.31,2.32,2.33,2.34,2.35,2.36,2.37,2.38,2.39,
    2.40,2.41,2.42,2.43,2.44,2.45,2.46,2.47,2.48,2.49,
    2.50,2.51,2.52,2.53,2.54,2.55,2.56,2.57,2.58,2.59,
    2.60,2.61,2.62,2.63,2.64,2.65,2.66,2.67,2.68,2.69,
    2.70,2.71,2.72,2.73,2.74,2.75,2.76,2.77,2.78,2.79,
    2.80,2.81,2.82,2.83,2.84,2.85,2.86,2.87,2.88,2.89,
    2.90,2.91,2.92,2.93,2.94,2.95,2.96,2.97,2.98,2.99,
    3.00,3.01,3.02,3.03,3.04,3.05,3.06,3.07,3.08,3.09
};
float P[] = {
    0.5000,0.5040,0.5080,0.5120,0.5160,0.5199,0.5239,0.5279,0.5319,0.5359,
    0.5398,0.5438,0.5478,0.5517,0.5557,0.5596,0.5636,0.5675,0.5714,0.5753,
    0.5793,0.5832,0.5871,0.5910,0.5948,0.5987,0.6026,0.6064,0.6103,0.6141,
    0.6179,0.6217,0.6255,0.6293,0.6331,0.6388,0.6406,0.6443,0.6480,0.6517,
    0.6554,0.6591,0.6628,0.6664,0.6700,0.6736,0.6772,0.6808,0.6844,0.6879,
    0.6915,0.6950,0.6985,0.7019,0.7054,0.7088,0.7123,0.7157,0.7190,0.7224,
    0.7257,0.7291,0.7324,0.7357,0.7389,0.7422,0.7454,0.7486,0.7517,0.7549,
    0.7580,0.7611,0.7642,0.7673,0.7704,0.7734,0.7764,0.7794,0.7823,0.7852,
    0.7881,0.7910,0.7939,0.7967,0.7995,0.8023,0.8051,0.8078,0.8106,0.8133,
    0.8159,0.8186,0.8212,0.8238,0.8264,0.8289,0.8315,0.8340,0.8365,0.8389,
    0.8413,0.8438,0.8461,0.8485,0.8508,0.8531,0.8554,0.8577,0.8599,0.8621,
    0.8643,0.8665,0.8686,0.8708,0.8729,0.8749,0.8770,0.8790,0.8810,0.8830,
    0.8849,0.8869,0.8888,0.8907,0.8925,0.8944,0.8962,0.8980,0.8997,0.9015,
    0.9032,0.9049,0.9066,0.9082,0.9099,0.9115,0.9131,0.9147,0.9162,0.9177,
    0.9192,0.9207,0.9222,0.9236,0.9251,0.9265,0.9279,0.9292,0.9306,0.9319,
    0.9332,0.9345,0.9357,0.9370,0.9382,0.9394,0.9406,0.9418,0.9429,0.9441,
    0.9452,0.9463,0.9474,0.9484,0.9495,0.9505,0.9515,0.9525,0.9535,0.9545,
    0.9554,0.9564,0.9573,0.9582,0.9591,0.9599,0.9608,0.9616,0.9625,0.9633,
    0.9641,0.9649,0.9656,0.9664,0.9671,0.9678,0.9686,0.9693,0.9699,0.9706,
    0.9713,0.9719,0.9726,0.9732,0.9738,0.9744,0.9750,0.9756,0.9761,0.9767,
    0.9772,0.9778,0.9783,0.9788,0.9793,0.9798,0.9803,0.9808,0.9812,0.9817,
    0.9821,0.9826,0.9830,0.9834,0.9838,0.9842,0.9846,0.9850,0.9854,0.9857,
    0.9861,0.9864,0.9868,0.9871,0.9875,0.9878,0.9881,0.9884,0.9887,0.9890,
    0.9893,0.9896,0.9898,0.9901,0.9904,0.9906,0.9909,0.9911,0.9913,0.9916,
    0.9918,0.9920,0.9922,0.9925,0.9927,0.9929,0.9931,0.9932,0.9934,0.9936,
    0.9938,0.9940,0.9941,0.9943,0.9945,0.9946,0.9948,0.9949,0.9951,0.9952,
    0.9953,0.9955,0.9956,0.9957,0.9959,0.9960,0.9961,0.9962,0.9963,0.9964,
    0.9965,0.9966,0.9967,0.9968,0.9969,0.9970,0.9971,0.9972,0.9973,0.9974,
    0.9974,0.9975,0.9976,0.9977,0.9977,0.9978,0.9979,0.9979,0.9980,0.9981,
    0.9981,0.9982,0.9982,0.9983,0.9984,0.9984,0.9985,0.9985,0.9986,0.9986,
    0.9987,0.9987,0.9987,0.9988,0.9988,0.9989,0.9989,0.9989,0.9990,0.9990
};

int LookupTable(float value)
{
    int size = sizeof(X)/sizeof(float);
    float minNum = abs(X[0] - value);
    int index = 0;
    int i = 1;
    while (i < size)
    {
        float fmin = abs(X[i] - value);
        if(fmin < minNum){
            minNum = fmin;
            index = i;
        }
        i++;
    }
    return index;
}

float GetProbability(float max)
{
    if(max >= 0.0){
        if(max > 3.09){
            return 1.0;
        }else {
            return P[LookupTable(max)];
        }
    }else {
        if(max < -3.09){
            return 0.0;
        }else {
            return 1 - P[LookupTable(-max)];
        }
    }
}

int main(int argc, char *argv[])
{
    float min = 0;
    float max = 1.5;
    float lessprob = GetProbability(max);
    float greaterprob = GetProbability(min);

    std::cout << "min:" << min << ",max:"<< max << "probability:" << lessprob - greaterprob <<  std::endl;
    return 0;
}