(thing) by yaweh Fri Nov 09 2001 at 8:59:04
A quick little C function that rounds off floating point values to a specified number of digits after the decimal point. This assumes you're treating your values as decimal values: 

#include 

double round(double number, int nplaces)
{
    double dec = pow(10, nplaces);
    return ((int)(number*dec + 0.5))/dec;
}
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