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Ldexp

Item Value Header filemath.h Declarationfloat ldexpf(float num, int exp);double ldexp(double num, int exp);long double ldexpl(long double num, int exp); Returnreturns the value of num * 2^exp. #include <math.h>   #include <stdio.h>   int main(void)   {     printf("%f", ldexp(1,2));     return 0;   } 4.000000