Zaokrąglenie liczby double

double BME280::getTemp(){
	uint8_t buffer[3];
    int32_t adc_T;
    int32_t var1, var2;
    int32_t temp;
    int32_t t_fine;

    HAL_I2C_Mem_Read(i2c, 0x76 << 1, 0xFA, 1, static_cast<uint8_t*>(buffer), 3, timeout);

    // Change result to 12-bit value:
    adc_T = static_cast<int32_t>(
    		(static_cast<uint32_t>(buffer[0]) << 12) |
			(static_cast<uint32_t>(buffer[1]) << 4) |
			(static_cast<uint32_t>(buffer[2]) >> 4));

    // Calculating temperature:
    var1 = static_cast<int32_t>((adc_T >> 3) - (static_cast<int32_t>(dig_T1) << 1));
    var1 = (var1 * static_cast<int32_t>(dig_T2)) >> 11;

    var2 = static_cast<int32_t>(((adc_T >> 4) - static_cast<int32_t>(dig_T1)) *
            ((adc_T >> 4) - static_cast<int32_t>(dig_T1)) >> 12);
    var2 = (var2 * static_cast<int32_t>(dig_T3)) >> 14;

    // Converting into celsius degrees:
    t_fine = var1 + var2;
    temp = (t_fine * 5 + 128) >> 8;
    double temperature = temp / 100.0;

    return roundDouble(temperature);
}

double BME280::roundDouble(double number){
	return std::round(number * 100.0) / 100.0;
}