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Lround

//Declaration: long int lroundf(float arg);                 long int lround(double arg);                 long int lroundl(long double arg);     // Values precisely between two values, such as 3.5, are rounded up.</p>      #include <math.h>   #include <stdio.h>   int main(void)   {     double val = 1.0;     do {       printf("%f %f\n", val, lround (val));       val++;     } while (val<11.0);     return 0;   }           /* 00000000000000000000000000000000000000000000000000000000000000000000000000000000 00000000000000000000000000000000000000.000000 6.000000 81386476629122498000000000000000000000000000000000000000000000000000000 00000000000000000000000000000000000000000000000000000000000000000000000000000000 00000000000000000000000000000000000000000000000000000000000000000000000000000000 00000000000000000000000000000000000000.000000 7.000000 81386476629122513000000000000000000000000000000000000000000000000000000 00000000000000000000000000000000000000000000000000000000000000000000000000000000 00000000000000000000000000000000000000000000000000000000000000000000000000000000 00000000000000000000000000000000000000.000000 8.000000 81386476629122528000000000000000000000000000000000000000000000000000000 00000000000000000000000000000000000000000000000000000000000000000000000000000000 00000000000000000000000000000000000000000000000000000000000000000000000000000000 00000000000000000000000000000000000000.000000 9.000000 81386476629122542000000000000000000000000000000000000000000000000000000 00000000000000000000000000000000000000000000000000000000000000000000000000000000 00000000000000000000000000000000000000000000000000000000000000000000000000000000 00000000000000000000000000000000000000.000000 10.000000 8138647662912255700000000000000000000000000000000000000000000000000000 00000000000000000000000000000000000000000000000000000000000000000000000000000000 00000000000000000000000000000000000000000000000000000000000000000000000000000000 000000000000000000000000000000000000000.000000 */