Check division is integer or float solidity











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Suppose i have a contract with decimals and total Supply as follow.
How can i check if tokenAmountInWei pass in is integer value in form of ether.



decimals = 18

totalSupply = 1000000



function someFunction(uint tokenAmountInWei) {

    // check if tokenAmountInWei convert to ether is integer value

}





solidity erc-20







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    up vote
    2
    down vote

    favorite












    Suppose i have a contract with decimals and total Supply as follow.
    How can i check if tokenAmountInWei pass in is integer value in form of ether.



    decimals = 18

    totalSupply = 1000000



    function someFunction(uint tokenAmountInWei) {
    
    // check if tokenAmountInWei convert to ether is integer value
    
}





    solidity erc-20







    share|improve this question







    New contributor




    vincentsty is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
    Check out our Code of Conduct.






















      up vote
      2
      down vote

      favorite









      up vote
      2
      down vote

      favorite











      Suppose i have a contract with decimals and total Supply as follow.
      How can i check if tokenAmountInWei pass in is integer value in form of ether.



      decimals = 18

      totalSupply = 1000000



      function someFunction(uint tokenAmountInWei) {
      
    // check if tokenAmountInWei convert to ether is integer value
      
}





      solidity erc-20







      share|improve this question







      New contributor




      vincentsty is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
      Check out our Code of Conduct.











      Suppose i have a contract with decimals and total Supply as follow.
      How can i check if tokenAmountInWei pass in is integer value in form of ether.



      decimals = 18

      totalSupply = 1000000



      function someFunction(uint tokenAmountInWei) {
      
    // check if tokenAmountInWei convert to ether is integer value
      
}





      solidity erc-20




      solidity erc-20






      share|improve this question







      New contributor




      vincentsty is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
      Check out our Code of Conduct.











      share|improve this question







      New contributor




      vincentsty is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
      Check out our Code of Conduct.









      share|improve this question




      share|improve this question






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      vincentsty is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
      Check out our Code of Conduct.









      asked yesterday









      vincentsty

      1324




      1324




      New contributor




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      Check out our Code of Conduct.





      New contributor





      vincentsty is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
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          1 Answer
          1






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          up vote
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          down vote



          accepted










          This should work:



          pragma solidity ^0.4.24;
          

          
contract Test {
          

          
    function checkIntegerETH(uint a) public pure returns (bool) {
          
        return (a % 1 ether == 0);
          
    }
          
}


          Here we are basically confirming that a has no remainder when being divided by 1018 (1 ether).






          share|improve this answer





















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            1 Answer
            1






            active

            oldest

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            1 Answer
            1






            active

            oldest

            votes









            active

            oldest

            votes






            active

            oldest

            votes








            up vote
            5
            down vote



            accepted










            This should work:



            pragma solidity ^0.4.24;
            

            
contract Test {
            

            
    function checkIntegerETH(uint a) public pure returns (bool) {
            
        return (a % 1 ether == 0);
            
    }
            
}


            Here we are basically confirming that a has no remainder when being divided by 1018 (1 ether).






            share|improve this answer

























              up vote
              5
              down vote



              accepted










              This should work:



              pragma solidity ^0.4.24;
              

              
contract Test {
              

              
    function checkIntegerETH(uint a) public pure returns (bool) {
              
        return (a % 1 ether == 0);
              
    }
              
}


              Here we are basically confirming that a has no remainder when being divided by 1018 (1 ether).






              share|improve this answer























                up vote
                5
                down vote



                accepted







                up vote
                5
                down vote



                accepted






                This should work:



                pragma solidity ^0.4.24;
                

                
contract Test {
                

                
    function checkIntegerETH(uint a) public pure returns (bool) {
                
        return (a % 1 ether == 0);
                
    }
                
}


                Here we are basically confirming that a has no remainder when being divided by 1018 (1 ether).






                share|improve this answer












                This should work:



                pragma solidity ^0.4.24;
                

                
contract Test {
                

                
    function checkIntegerETH(uint a) public pure returns (bool) {
                
        return (a % 1 ether == 0);
                
    }
                
}


                Here we are basically confirming that a has no remainder when being divided by 1018 (1 ether).







                share|improve this answer












                share|improve this answer



                share|improve this answer










                answered yesterday









                Shawn Tabrizi

                3,8342521




                3,8342521






















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