Re: [boost] erfc id not found

12 Jun 2008

      I did add the include statement. Please find attached the sample code.
Thank you. 

#include <iostream>
#include <math.h>
#include <stdlib.h>
#include <boost/math/special_functions/erf.hpp>

using namespace std;
int main()
{
// declare input and calculated variables
float C;
float W;
float H;
float V;
float Y1;
float Y2;
float Z1;
float Z2;
float DX;
float DY;
float DZ;
float DK;
float X;
float Y;
float Z;
float T;
float Max;
float CN;
long double ETA;
long double PN;
long double OM;
long double LM;
long double ZETA;
long double ALPHA;
long double BETA;
long double BETAT;
long double COSSZ;
long double COSRY;
long double RTDXT;
long double A1;
long double B1;
long double A2;
long double B2;
long double C1;
long double C2;
long double TERM1;
long double SIGMAN;
long double SIGMAM;
long double SUBTN;
const double PI = 3.14159265358979;

// Concentrations are specified for boundary conditions
if (Y==0 && Y == Y1 || Y == Y2)
{
   if (Z > Z1 && Z < Z2)
         CN = 0.50;
   else (Z == Z1 || Z == Z2);
         CN = 0.25;
}
else;  
if (Z == Z1 || Z == Z2)
{
   if (Y > Y1 && Y < Y2)
         CN = 0.50;
   else ;
}
else;

if (Y > Y1 && Y < Y2 && Z >Z1 && Z<Z2)
         CN = 1.0;     
else; 

// Begin summation of infinite outer series
 SIGMAM = 0;

    for (int x = 0; x <= Max; x++ )    
    {    
           ZETA = x*PI/H;
           if (x==0)
               OM = (Z2-Z1)/H;
           else
               OM = (sin(ZETA*Z2)-sin(ZETA*Z1))/(x*PI);
         COSSZ=cos(ZETA*Z);
       // Begin summation of infinite inner series      
        SIGMAN = 0;
        SUBTN = 0;   
            for (int y = 0; y <= Max; y++ )  
            {
            ETA = y*PI/W;
                  if (y==0)
                      PN = (Y2-Y1)/W;
                  else
                      PN = (sin(ETA*Y2)-sin(ETA*Y1))/(y*PI);
            COSRY=cos(ETA*Y);
            ALPHA = 4.0*DX*(ETA*ETA*DY+ZETA*ZETA*DZ+DK);
            BETA = sqrt(V*V+ALPHA);
            BETAT=BETA*T;
            RTDXT=2.0*sqrt(DX*T);
            //Compute TERM1 and SIGMAN
            A1 = exp(X*(V-BETA)/(2.0*DX));
            B1 =erfc((X-BETAT)/RTDXT);
            A2= exp(X*(V+BETA)/(2.0*DX));
            B2=erfc((X+BETAT)/RTDXT);
            TERM1 = COSRY*PN*((A1*B1)+(A2*B2));
                  if ((x==0) && (y==0)) 
                     TERM1 = TERM1*0.5;
                  else if((x>0) && (y>0)) 
                     TERM1 = TERM1*2;
                  else
                     TERM1 = TERM1;
             SIGMAN = SIGMAN+TERM1;
             // Check for convergence of inner series due to
oscillations
             // Check subtotal of last 10 terms
                 {
                 if(y % 10 != 0)
                      continue;
                    {
                    if (fabs(SUBTN) < 1.0E-12) 
                      goto leave_innerloop;
                    }   
                 SUBTN = 0.0;
                 }     

             // End of infinite inner series 
            }  
       leave_innerloop:
       SIGMAM=SIGMAM+SIGMAN*COSSZ*OM;
       // End of infinite outer series
    }
}

-----Original Message-----
From: boost-bounces@lists.boost.org
[mailto:boost-bounces@lists.boost.org] On Behalf Of John Maddock
Sent: Thursday, June 12, 2008 6:04 AM
To: boost@lists.boost.org
Subject: Re: [boost] erfc id not found

Gary.Stevens@deq.idaho.gov wrote:
...
I have been trying to compile code that uses the erfc function. I can
get it to build successfully using DevC++4.9.9.2, but cannot using
Win-Visual C++2005 Express (C90 standard) which I have been using to
construct a form for input-output. I have downloaded the boost
libraries
and have changed the configuration properties to include the boost
directory and changed to Not Using Precompiled Headers. I continue to
receive the following: 'erfc': identifier not found. I have tried
adding
the libraies for DevC++4.9.9.2 but receive the same error. I am new to
C++ and this a small simple program but am spending a significant
amount
of time getting the erfc issue resolved. Any help would be very
appreciated. Thank you.
We would need to see the sample code to understand what you're doing
wrong,
but are you including <boost/math/special_functions/erf.hpp> ?

HTH, John.

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Re: [boost] erfc id not found

Gary.Stevens＠deq.idaho.gov