Triple Water Geo (TWGeo)

Saturday, February 23, 2019

[C++ Builder] FLOAT_INVALID_OVERFLOW!! SetExceptionMask !!

Error FLOAT_INVALID_OVERFLOW occurred when calling a function from a DLL build by VC from C++ Builder? This is a problem of C++ Build and solve if by calling SetExceptionMask before calling your Dll.

Example:


#include <System.Math.hpp>

typedef int (*PFNAddFunction)(int, int);

void testDllCall()
{
  //Mask Exception
  TFPUExceptionMask fExceptionMask ;
  fExceptionMask=GetExceptionMask();
  fExceptionMask << exInvalidOp;
  fExceptionMask <<  exDenormalized;
  fExceptionMask <<  exZeroDivide;
  fExceptionMask << exOverflow;
  fExceptionMask << exUnderflow;
  fExceptionMask << exPrecision;
  SetExceptionMask(fExceptionMask);
  //Call DLL
  HMODULE _dll=LoadLibraryA("dllName.dll");
  if(_dll != NULL) {
    PFNAddFunction myAdd = (PFNAddFunction)GetProcAddress(_dll,"funcAdd");
    myAdd(1,2)
    FreeLibrary(_dll);
  }
}

[Reference]
https://delphi.fandom.com/wiki/SetExceptionMask_Routine
http://docwiki.embarcadero.com/Libraries/Tokyo/en/System.Math.SetExceptionMask

Friday, December 28, 2018

http-push failed for private Git server on XAMPP

Using local folder path as URL

eg., use D:\GitRepos\project instead of http://127.0.0.1/git/project

the same for pull data from Server

Thursday, September 6, 2018

Run .exe from PHP

PHP範例

<?php

$answer = shell_exec("exe\AplusB.exe 1.3 2.5");  //路徑要用 反斜線 啊 windows

echo $answer."</br>";

?>

C++ 範例 (AplusB.exe)：二個數值相加

#include <stdlib.h>

int main(int argc,  char* argv[])
{

 if (argc <= 1)

  return -1;

 double a = atof(argv[1]);

 double b = atof(argv[2]);

 printf("%lf + %lf = %lf\n", a, b, a + b);

 return 0;

}