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Ilogb

Item Value Header filemath.h Declarationint ilogbf(float num);int ilogb(double num);int ilogbl(long double num); Returnreturns the exponent of num. #include <math.h>   #include <stdio.h>   int main(void)   {      int e;      e = ilogbl(4);        printf("%d", e);     } 2