我正在用Java实现一个需要发送C函数的程序，但是它也调用了一个dll，这是C代码：

int SampleCalibration7points(void){
    
    int sel_coeff_7P, neg_flags;
    
    int i, ret;
    
    int cali_type, cali_points;
    
    // COEFFICIENT_COUNT = 10 
    // global variable
    int coefficients[COEFFICIENT_COUNT] = {0};

    // 7 points calibration
    // complete calibration input, 24 bit values
    // {Pressure_ref[%], Pressure_raw, Tambient_ref, Tambient_raw}
    double cali_data[7][4]  =   {   {30,    982368,     10, 420864},
                                    {90,    7950208,    10, 420901},
                                    {30,    770304,     25, 1571148},
                                    {50,    2362176,    25, 1581184},
                                    {90,    7768800,    25, 1581104},
                                    {30,    547968,     40, 2749136},
                                    {90,    7620416,    40, 2749312}};

    int range_check;
    int test;

    double P_raw[7], P_des[7], T_raw[7],T_raw_back[7], T_des[7];
    double P_corr[7], T_corr[7],P_corr_percent[7], T_corr_deg[7]; 
    
    
    // limit definition
    // pressure limits are 0 and 100, due to percentage reference
    double T_min = -40.0, T_max = 85.0;
     
    // choose coefficient to be calculated

    /*
        //FLAGS for selCoeffs
        #define CO_OFFSET_S         0x1
        #define CO_GAIN_S           0x2
        #define CO_TCG              0x4
        #define CO_TCO              0x8
        #define CO_SOT_TCO          0x10
        #define CO_SOT_TCG          0x20
        #define CO_SOT_S            0x40
        #define CO_OFFSET_T         0x80
        #define CO_GAIN_T           0x100
        #define CO_SOT_T            0x200
    */
    sel_coeff_7P = (CO_OFFSET_S|CO_GAIN_S|CO_TCO|CO_TCG|CO_OFFSET_T|CO_GAIN_T|CO_SOT_TCO|CO_SOT_TCG|CO_SOT_T|CO_SOT_S);    

    // calibration type, default value 
    cali_type = 0;
    
    // number of calibration points
    cali_points = 7;   
    
    // rearrange data for coefficent calculation
    for ( i=0; i < cali_points; i++ ) {
        
        P_raw[i] = cali_data[i][1];
        // generate digital reference pressure values -> P_des[x]
        P_des[i] = ConvertBridgeFromPercent( cali_data[i][0]);
        
        T_raw[i] = cali_data[i][3] ;  
        // generate digital reference temp values -> T_des[x]
        ConvertTempFromDegrees(&T_des[i], cali_data[i][2], T_min, T_max );
    }

    // call DLL function
    // coefficent calculation
    ret = CalculateCoefficients( coefficients,
                                    &neg_flags, 
                                    cali_points, //number of coeffs max 7 
                                    sel_coeff_7P,
                                    cali_type, 
                                    P_raw, P_des, 
                                    T_raw, T_des);    

        /********** Coefficients resulst, T[-40..85]    *************
        coefficients =  {   -520831,
                            5880723,
                            489,
                            379060,
                            -4349,
                                -296970,
                            -278951,
                            -317710,
                            3817446,
                            -49055
                        }
        ***************************************************/
    
    for (i = 0;i<cali_points;i++){
        // call DLL functions
        T_corr[i] = GetCorrectedTemp(coefficients, T_raw[i]);
        ConvertTempToDegrees (&T_corr_deg[i] , (int) T_corr[i],  T_min, T_max );

        P_corr[i] = GetCorrectedBridge (coefficients, P_raw[i] , T_raw[i]); 
        P_corr_percent[i] = ConvertBridgeToPercent(P_corr[i]); 
        // Convert pressure precentage values to the according pressure values, depending on customers limits
    }
        /********** Corrected raw values, applying coefficients *************  
        
        corrected temperature[counts] =         
                            {       
                                 6710884,   
                                 6710949,   
                                 8712632,   
                                 8729989,   
                                 8729851,   
                                10737550,   
                                10737550    
                            }
                            
        corrected pressure [counts]=            
                            {
                                  5033172,  
                                 15099510,  
                                  5033171,  
                                  8388615,  
                                 15099510,  
                                  5033171,  
                                 15099510   
                            }                   
        *******************************************************************/    

    //check coefficients range, returns 1 when range is exceeded, else 0 
    // call DLL function
    range_check = VerifyCoefficients(coefficients) ;                                   
    return 0;
}

并且dll为校准L6.dll
例如：CalculateCoefficients是属于dll的函数之一。
你知道什么是最好的方法吗？因为我不知道如果使用JNI功能，我的C文件是否会继续调用所需的dll。
我尝试用Java直接调用dll（CalibrationL6.dll），但不支持，这就是为什么我尝试使用C代码代替。