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float math (float f2, float f4,float f22, float f42, float theta)
{
//this function does the w(theta) calculation
float wtheta = 0 ;
wtheta = 1 + f2*f22*1/2*(3* pow(cos(theta),2) *-1 )
+ f4*f42* 1/8*(35*pow(cos(theta),4)
- 30 *pow(cos(theta),4) + 3);
return (wtheta);
}
int main ()
{
//FILLING DATA ARRAYS
// ask user for dat file
start:
cout << "Input filename where the raw data exist-->";
char filename [50];
ifstream dat;
cin.getline(filename,50);
dat.open(filename);
// if file isnt there report error
if (!dat.is_open()){
cout << "File Does Not Exist!" << endl ;
goto start;
}
// read from file and fill arrays
float theta[20], wthe[20], errwth[20];
int x = 0;
float a,b,c,d,e,f;
while (! dat.eof()){
dat >> a >> b >> c;
theta [x] = a ;
wthe [x] = b;
errwth [x] = c;
cout << theta[x] << endl;//check to see if filled right
x++;
}
dat.close();
// SECOND ARRAY FILLING
// fill arrays for testing models
beg:
cout << "Input filename where the data table exist-->";
char file [50];
ifstream table;
cin.getline(file,50);
table.open(file);
// if file isnt there report error
if (!table.is_open()){
cout << "File Does Not Exist!" << endl ;
goto beg;
}
x = 0 ;
float ji [10], jm [10], jf[10], l1[10], l2[10] ;
float f2[10] , f4[10] ;
while (! table.eof()){
table >> a >> b >> c >> d >> e >> f;
jf [x] = a;
ji [x] = b;
l1 [x] = c;
l2 [x] = d;
f2 [x] = e;
f4 [x] = f;
cout << jf [x] << endl;
x++;
}
/*
// testing calls not in a subroutine to check if calc is correct
float mwtheta ;
mwtheta = 1 + f2[0]*f2[1]*1/2*(3* pow(cos(theta[0]),2) *-1 )
+ f4[0]*f4[1]* 1/8*(35*pow(cos(theta[0]),4)
- 30 *pow(cos(theta[0]),4) + 3);
cout << mwtheta << endl;
*/
// call subroutine to do the model wtheta calcs
cout << " Below are the subtracted values (data - model) of wthetas" << endl;
for ( x = 0 ; x < 10 ; x++ ){
float ans;
ans = math (f2[0],f4[0],f2[1],f4[1], theta[x] );
// cout << ans << endl;
float final = wthe[x] - ans ;
cout << final << endl;
}
return 0 ;
}
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