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Expm1

Item Value Header filemath.h Declarationfloat expm1f(float arg);double expm1(double arg);long double expm1l(long double arg); Returnreturns the natural logarithm e raised to the arg power, minus 1( e^arg-1). #include <math.h>   #include <stdio.h>   int main(void)   {      printf("Value of e to the first: %f.", expm1f(1.0));   } Value of e to the first: 1.718282.