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==expm1==

Item
Value
Header file
math.h
Declaration
float expm1f(float arg);double expm1(double arg);long double expm1l(long double arg);
Return
returns the natural logarithm e raised to the arg power, minus 1( e^arg-1).

   
<source lang="cpp">#include <math.h>
  #include <stdio.h>
  int main(void)
  {
     printf("Value of e to the first: %f.", expm1f(1.0));
  }</source>