ZCW-MacroLabs-OOP-ScientificCalculator/Functions.java

/**
 * Write a description of class Functions here.
 *
 * @author (your name)
 * @version (a version number or a date)
 */

import java.util.Scanner;
import java.lang.Math;
import java.lang.Math;
import java.math.BigDecimal;

public class Functions
{

    double first;
    double second;
    static double mem;
    static double value;
    public static int display;
    public static String show = "Decimal";
    static Scanner scan = new Scanner(System.in);

    public void functions() {
    }

    public static double add(double first, double second){
        double value = first + second;
        return value;

    }
    public static double subtract(double first, double second){
        double value = first - second;
        return value;
    }

    public static double multiply(double first, double second){

        double value = first * second;
        return value;
    }

    public static double divide(double top, double bot){

        if (bot != 0){
            return  (top / bot);
        } else {
            System.out.println("ERROR! ERROR! Try using some numbers that work!");
        }

        return top / bot;
    }

    public static double square(double input){
        double value = Math.pow(input, 2);
        return value;
    }

    public static double squareRoot(double input){

        return Math.sqrt(input);

    }
    public static double exponent(double first, double exp){
        
        double value = Math.pow(first, exp);
        return value;
    }

    public static double inverse(double input){

        double value = 1/(input);
        return value;
    }

    public static double invertSign(double input){
        double value = -(input);
        return value;
    }

    public static String radDeg = scan.nextLine();

    public static double sin(double input){

        System.out.println("radians or degrees?");
        String radDeg = scan.nextLine();
        if(radDeg.equalsIgnoreCase("degrees")){
            input = Math.toRadians(input);

        }
        else if(radDeg.equalsIgnoreCase("radians")){
            input = input;

        }
        value = Math.sin(input);
        return value;
    }

    public static double cos(double input){
        System.out.println("radians or degrees?");
        String radDeg = scan.nextLine();
        if(radDeg.equalsIgnoreCase("degrees")){
            input = Math.toRadians(input);

        }
        else if(radDeg.equalsIgnoreCase("radians")){
            input = input;

        }
        value = Math.cos(input);
        return value;

    }

    public static double tan(double input){
        System.out.println("radians or degrees?");
        String radDeg = scan.nextLine();
        if(radDeg.equalsIgnoreCase("degrees")){
            input = Math.toRadians(input);

        }
        else if(!radDeg.equalsIgnoreCase("radians")){
            input = input;

        }
        value = Math.tan(input);
        return value;
    }

    public static double arcsin(double input){
        double answer = 0;
        System.out.println("radians or degrees?");
        String radDeg = scan.nextLine();
        if(radDeg.equalsIgnoreCase("degrees")){

            answer = (float)Math.toDegrees(Math.asin(input));

        }
        else if(radDeg.equalsIgnoreCase("radians")){

            answer = Math.asin(input);

        }
        value = answer;
        return value;

    }
    
    public static double arccos(double input){
        double answer = 0;
        System.out.println("radians or degrees?");
        String radDeg = scan.nextLine();
        if(radDeg.equalsIgnoreCase("degrees")){

            answer = Math.toDegrees(Math.acos(input));

        }
        else if(radDeg.equalsIgnoreCase("radians")){

            answer = Math.acos(input);

        }
        value = answer;
        return value;

    }

    public static double arctan(double input){
        double answer = 0;
        System.out.println("radians or degrees?");
        String radDeg = scan.nextLine();
        if(radDeg.equalsIgnoreCase("degrees")){

            answer = Math.toDegrees(Math.atan(input));

        }
        else if(radDeg.equalsIgnoreCase("radians")){

            answer = Math.atan(input);

        }
        value = answer;
        return value;
    }

    public static double csc(double input){
        System.out.println("radians or degrees?");
        String radDeg = scan.nextLine();
        if(radDeg.equalsIgnoreCase("degrees")){
            input = Math.toRadians(input);

        }
        else if(radDeg.equalsIgnoreCase("radians")){
            input = input;

        }
        value = 1/(Math.sin(input));
        return value; 

    }

    public static double sec(double input){
        System.out.println("radians or degrees?");
        String radDeg = scan.nextLine();
        if(radDeg.equalsIgnoreCase("degrees")){
            input = Math.toRadians(input);

        }
        else if(radDeg.equalsIgnoreCase("radians")){
            input = input;

        }

        value = 1/(Math.cos(input));
        return value;

    }

    public static double cot(double input){
        System.out.println("radians or degrees?");
        String radDeg = scan.nextLine();
        if(radDeg.equalsIgnoreCase("degrees")){
            input = Math.toRadians(input);

        }
        else if(radDeg.equalsIgnoreCase("radians")){
            input = input;

        }
        value = 1/(Math.tan(input));
        return value;
    }

    public static double ln(double input){
        return Math.log(input);

    }

    public static double inverseLn(double input){

        return Math.exp(Math.log(input));

    }

    public static double memPlus(double value) {
        mem += value;
        return mem;
    }

    public static double memClear(double value) {
        mem = 0;
        return mem;
    }

    public static double recall() {
        return mem;
    }

    

    
}