CVM Performance Test: Multiplication

Command

mulloops.mul(1000000)

Deployment

var mulloopsABI = [{"constant":true,"inputs":[{"name":"x","type":"uint256"}],"name":"mul","outputs":[{"name":"","type":"string"}],"payable":false,"stateMutability":"pure","type":"function"}];
var mulloopsBC = '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';
var mulloopsContract = web3.cmt.contract(mulloopsABI);
var mulloops = mulloopsContract.new(
   {
     from: web3.cmt.accounts[0],
     data: mulloopsBC,
     gas: '4700000'
   }, function (e, contract){
    console.log(e, contract);
    if (typeof contract.address !== 'undefined') {
         console.log('Contract mined! address: ' + contract.address + ' transactionHash: ' + contract.transactionHash);
    }
 })

eni_multiplication.cpp

#include <eni.h>
#include <string>

class Multiplication : public eni::EniBase
{
public:
  Multiplication(const std::string& pArgStr) : eni::EniBase(pArgStr) { }

  ~Multiplication() { }

private:
  bool parse(const json::Array& pArgs) override {
        x = pArgs[0].toInteger();
        return true;
  }

  eni::Gas gas() const override {
    return 10000;
  }
  
  bool run(json::Array& pRetVal) override {
    eni::Int sum = 0;
    eni::Int prod = 2;
    for(eni::Int i=0;i<x;i++){
        prod = prod * (i%10 + 1);
        if (prod > 1000) {
            prod = 2;
            sum = sum + 1;
        }
    }
    std::string s=boost::lexical_cast<std::string>(sum);
    pRetVal.emplace_back(s);
    return true;
  }

private:
        eni::Int x;

};

ENI_C_INTERFACE(mul, Multiplication)

Makefile

CPPFLAGS=-I/home/ubuntu/libeni/include
CXXFLAGS=-std=c++11 -fPIC
LDFLAGS=-L/home/ubuntu/libeni/lib
LDADD=-leni

all:
        g++ ${CPPFLAGS} ${CXXFLAGS} ${LDFLAGS} -shared -oeni_multiplication.so eni_multiplication.cpp ${LDADD}

mul.sol

pragma solidity ^0.4.23;

contract mulloops {

    function mul(uint256 x) public pure returns(string) {
        string memory sum;
        sum=eni("mul", x);
        return sum;
    }
}