double sqrt (double x);
double sqrt (double x); float sqrtf (float x);long double sqrtl (long double x);
double sqrt (double x); float sqrt (float x);long double sqrt (long double x);
double sqrt (double x); float sqrt (float x);long double sqrt (long double x); double sqrt (T x); // additional overloads for integral types
<cmath> ) for the integral types: These overloads effectively cast x to a double before calculations (defined for T being any integral type ).<complex> and <valarray> (see complex sqrt and valarray sqrt).1
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/* sqrt example */
#include <stdio.h> /* printf */
#include <math.h> /* sqrt */
int main ()
{
double param, result;
param = 1024.0;
result = sqrt (param);
printf ("sqrt(%f) = %f\n", param, result );
return 0;
}sqrt(1024.000000) = 32.000000