//parallel resistor calculator : input is target value (float)
//this calculator can search a 100 combination up to 10 of linked-resistors.
//output is combination (int array)
//variation of PRECISION can make a combinations more wide.
#include <stdio.h>
#include <stdlib.h>
#include <math.h>
#define PRECISION 0.5
#define DECIMAL_PLACE 2 //round decimal place
#define RLIST 6
int* assignRarr(int* Rlist, int numofRlist, int const* Rarr){
for(int i=0; i<numofRlist; i++)
Rlist[i]=Rarr[i];
return Rlist;
}
double isEqual(int* Rarr, int numR, double target){
double result=0;
double inverseSum=0;
for(int i=0; i<numR; i++){
inverseSum+=1/(double)Rarr[i];
}
result=1/inverseSum;
int compvalue
=fabs(result
-target
)<=PRECISION
; //this is a default option, epslion comparison
if (compvalue){
return result;
}
else {
return 0; //if 0->result, you can search a all combination.
}
}
int biSearchR(int combination[][10], int const* Rlist, int* selectedRarr, double* valuelist, int iter,
double target, int option, int numofRlist){
option = option > 0 ? 0 : target; //range mode
for(int p = option; p < target + 1; p++) { //if p==target, not search a range.
for (int i = 0; i < numofRlist - 1; i++) {
selectedRarr[0] = Rlist[i];
for (int j = i + 1; j < numofRlist; j++) {
selectedRarr[1] = Rlist[j];
double value = isEqual(selectedRarr, 2, p);
if (value) {
for (int q = 0; q < 2; q++)
combination[iter][q] = selectedRarr[q];
valuelist[iter] = value;
iter++;
}
}
}
}
return iter;
}
int triSearchR(int combination[][10], int const* Rlist, int* selectedRarr, double* valuelist, int
iter, double target, int option, int numofRlist){
option = option > 0 ? 0 : target; //range mode
for(int p = option; p < target + 1; p++){
for(int i=0; i<numofRlist-2; i++){
selectedRarr[0]=Rlist[i];
for(int j=i+1; j<numofRlist-1; j++){
selectedRarr[1]=Rlist[j];
for(int k=j+1; k<numofRlist; k++){
selectedRarr[2]=Rlist[k];
double value = isEqual(selectedRarr, 3, p); //p <--> target
if(value){
for(int q=0; q<3; q++)
combination[iter][q]=selectedRarr[q];
valuelist[iter]=value;
iter++;
}
}
}
}
}
return iter;
}
int quadSearchR(int combination[][10], int const* Rlist, int* selectedRarr, double* valuelist, int
iter, double target, int option, int numofRlist){
option = option > 0 ? 0 : target; //range mode
for(int p = option; p < target + 1; p++) { //if p==target, not search a range.
for (int i = 0; i < numofRlist - 3; i++) {
selectedRarr[0] = Rlist[i];
for (int j = i + 1; j < numofRlist - 2; j++) {
selectedRarr[1] = Rlist[j];
for (int k = j + 1; k < numofRlist - 1; k++) {
selectedRarr[2] = Rlist[k];
for (int l = k + 1; l < numofRlist; l++) {
selectedRarr[3] = Rlist[l];
double value= isEqual(selectedRarr, 4, p);
if (value) {
for(int q=0; q<4; q++)
combination[iter][q]=selectedRarr[q];
valuelist[iter]=value;
iter++;
}
}
}
}
}
}
return iter;
}
void printListedR(int* Rarr, int numofRlist){
if (numofRlist<10){
for(int i=0; i<numofRlist-1; i++)
} else {
for(int i=0; i<5; i++)
}
printf("%d Ω ).\n\n", Rarr
[numofRlist
-1]); }
int printCombination(int (*combination)[10], int numofcombination, double* result){
if(!numofcombination){
return 0;
}
for(int i=0; i<numofcombination; i++){
int j=0;
printf("Resistors Combination %d : ", i
+1); while (combination[i][j]){
printf("%d Ω", combination
[i
][j
]); j++;
if(!combination[i][j])
break;
}
printf(" = %.3f Ω", result
[i
]); }
return 1;
}
int printRatioCombination(int (*combination)[10], int numofcombination){
if(!numofcombination){
return 0;
}
double newRlist[100][10]={0};
int roundvalue
= pow(10, DECIMAL_PLACE
);
for(int i=0; i<numofcombination; i++){
int j=0;
while (combination[i][j]){
newRlist[i][j]=(double)combination[i][j]/combination[i][0];
j++;
}
}
for(int i=0; i<numofcombination; i++){
int j=0;
printf("Resistors' ratio %d : ", i
+1); while (newRlist[i][j]){
printf("%.2f", round
(roundvalue
*newRlist
[i
][j
])/roundvalue
); j++;
if(!newRlist[i][j])
break;
}
}
return 1;
}
int main(void) {
int numofRlist=RLIST;
int* Rlist
=(int*) malloc(sizeof(int)*numofRlist
); int selectedRarr[10]={0};
int combination[100][10]={0};
double valuelist[100]={0};
int iter=0;
double target;
int Rarr[RLIST]={820, 1000, 2200, 3300, 4700, 5600}; //resistors list, you can modify it.
assignRarr(Rlist, numofRlist, Rarr);
puts("Welcome to parallel resistor combination calculator.\n"); puts("This calculator can search combinations of resistors from : "); printListedR(Rlist, numofRlist);
puts("target value? (without unit)"); printf("\ntarget value : %.3f Ω\n", target
);
iter = biSearchR(combination, Rlist, selectedRarr, valuelist, iter, target, 0, numofRlist);
iter = triSearchR(combination, Rlist, selectedRarr, valuelist, iter, target, 0, numofRlist);
//iter = quadSearchR(combination, Rlist, selectedRarr, valuelist, iter, target, 0, numofRlist);
printCombination(combination, iter, valuelist);
//printRatioCombination(combination, iter);
return 0;
}
//parallel resistor calculator : input is target value (float)
//this calculator can search a 100 combination up to 10 of linked-resistors.
//output is combination (int array)
//variation of PRECISION can make a combinations more wide.

#include <stdio.h>
#include <stdlib.h>
#include <math.h>
#define PRECISION 0.5
#define DECIMAL_PLACE 2 //round decimal place
#define RLIST 6

int* assignRarr(int* Rlist, int numofRlist, int const* Rarr){
    for(int i=0; i<numofRlist; i++)
        Rlist[i]=Rarr[i];

    return Rlist;
}

double isEqual(int* Rarr, int numR, double target){

    double result=0;
    double inverseSum=0;

    for(int i=0; i<numR; i++){
        inverseSum+=1/(double)Rarr[i];

    }

    result=1/inverseSum;
    int compvalue=fabs(result-target)<=PRECISION; //this is a default option, epslion comparison

    if (compvalue){
        return result;
    }
    else {
        return 0; //if 0->result, you can search a all combination.
    }
}

int biSearchR(int combination[][10], int const* Rlist, int* selectedRarr, double* valuelist, int iter,
              double target, int option, int numofRlist){
    option = option > 0 ? 0 : target; //range mode
    for(int p = option; p < target + 1; p++) { //if p==target, not search a range.
        for (int i = 0; i < numofRlist - 1; i++) {
            selectedRarr[0] = Rlist[i];
            for (int j = i + 1; j < numofRlist; j++) {
                selectedRarr[1] = Rlist[j];
                double value = isEqual(selectedRarr, 2, p);
                if (value) {
                    for (int q = 0; q < 2; q++)
                        combination[iter][q] = selectedRarr[q];
                    valuelist[iter] = value;
                    iter++;
                }
            }
        }
    }
    return iter;
}

int triSearchR(int combination[][10], int const* Rlist, int* selectedRarr, double* valuelist, int
iter, double target, int option, int numofRlist){
    option = option > 0 ? 0 : target; //range mode
    for(int p = option; p < target + 1; p++){
        for(int i=0; i<numofRlist-2; i++){
            selectedRarr[0]=Rlist[i];
            for(int j=i+1; j<numofRlist-1; j++){
                selectedRarr[1]=Rlist[j];
                for(int k=j+1; k<numofRlist; k++){
                    selectedRarr[2]=Rlist[k];
                    double value = isEqual(selectedRarr, 3, p); //p <--> target
                    if(value){
                        for(int q=0; q<3; q++)
                            combination[iter][q]=selectedRarr[q];
                        valuelist[iter]=value;
                        iter++;
                    }
                }
            }
        }
    }
    return iter;
}

int quadSearchR(int combination[][10], int const* Rlist, int* selectedRarr, double* valuelist, int
iter, double target, int option, int numofRlist){
    option = option > 0 ? 0 : target; //range mode
    for(int p = option; p < target + 1; p++) { //if p==target, not search a range.
        for (int i = 0; i < numofRlist - 3; i++) {
            selectedRarr[0] = Rlist[i];
            for (int j = i + 1; j < numofRlist - 2; j++) {
                selectedRarr[1] = Rlist[j];
                for (int k = j + 1; k < numofRlist - 1; k++) {
                    selectedRarr[2] = Rlist[k];
                    for (int l = k + 1; l < numofRlist; l++) {
                        selectedRarr[3] = Rlist[l];
                        double value= isEqual(selectedRarr, 4, p);
                        if (value) {
                            for(int q=0; q<4; q++)
                                combination[iter][q]=selectedRarr[q];
                            valuelist[iter]=value;
                            iter++;
                        }
                    }
                }
            }
        }
    }
    return iter;
}

void printListedR(int* Rarr, int numofRlist){
    printf("( ");
    if (numofRlist<10){
        for(int i=0; i<numofRlist-1; i++)
            printf("%d Ω, ", Rarr[i]);
    } else {
        for(int i=0; i<5; i++)
            printf("%d Ω, ", Rarr[i]);
        printf("..., ");
    }
    printf("%d Ω ).\n\n", Rarr[numofRlist-1]);
}

int printCombination(int (*combination)[10], int numofcombination, double* result){
    if(!numofcombination){
        printf("None");
        return 0;
    }

    for(int i=0; i<numofcombination; i++){
        int j=0;

        printf("Resistors Combination %d : ", i+1);
        while (combination[i][j]){
            printf("%d Ω", combination[i][j]);
            j++;

            if(!combination[i][j])
                break;

            printf(" || ");
        }
        printf(" = %.3f Ω", result[i]);
        puts("");
    }
    return 1;
}

int printRatioCombination(int (*combination)[10], int numofcombination){
    if(!numofcombination){
        return 0;
    }

    double newRlist[100][10]={0};
    int roundvalue= pow(10, DECIMAL_PLACE);

    for(int i=0; i<numofcombination; i++){
        int j=0;
        while (combination[i][j]){
            newRlist[i][j]=(double)combination[i][j]/combination[i][0];
            j++;
        }
    }

    for(int i=0; i<numofcombination; i++){
        int j=0;

        printf("Resistors' ratio %d : ", i+1);
        while (newRlist[i][j]){
            printf("%.2f", round(roundvalue*newRlist[i][j])/roundvalue);
            j++;

            if(!newRlist[i][j])
                break;

            printf(" || ");
        }
        puts("");
    }

    return 1;
}

int main(void) {
    int numofRlist=RLIST;
    int* Rlist=(int*) malloc(sizeof(int)*numofRlist);
    int selectedRarr[10]={0};
    int combination[100][10]={0};
    double valuelist[100]={0};
    int iter=0;
    double target;

    int Rarr[RLIST]={820, 1000, 2200, 3300, 4700, 5600}; //resistors list, you can modify it.
    assignRarr(Rlist, numofRlist, Rarr);

    puts("Welcome to parallel resistor combination calculator.\n");
    puts("This calculator can search combinations of resistors from : ");
    printListedR(Rlist, numofRlist);
    puts("target value? (without unit)");
    scanf("%lf", &target);
    printf("\ntarget value : %.3f Ω\n", target);


    iter = biSearchR(combination, Rlist, selectedRarr, valuelist, iter, target, 0, numofRlist);
    iter = triSearchR(combination, Rlist, selectedRarr, valuelist, iter, target, 0, numofRlist);
    //iter = quadSearchR(combination, Rlist, selectedRarr, valuelist, iter, target, 0, numofRlist);

    printCombination(combination, iter, valuelist);
    //printRatioCombination(combination, iter);

    free(Rlist);
    return 0;
}
