c++ - How can I check whether a double has a fractional part? -


basically have 2 variables:

double halfwidth = width / 2; double halfheight = height / 2;

as being divided 2, either whole number or decimal. how can check whether whole number or .5?

you can use modf, should sufficient:

 double intpart;   if( modf( halfwidth, &intpart) == 0 )  {  // code here  }

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