log1p: returns the natural logarithm for num+1 : log1p « math.h « C / ANSI-C

1. C / ANSI-C
2. math.h
3. log1p

log1p: returns the natural logarithm for num+1

    

//Declaration: float log1pf(float num); 
               double log1p(double num); 
               long double log1pl(long double num);  
 

    
  

  #include <math.h>
  #include <stdio.h>

  int main(void)
  {
    double val = 1.0;

    do {
      printf("%f %f\n", val, log1p (val));
      val++;
    } while (val<11.0);

    return 0;
  }

         
        /*
1.000000 0.693147
2.000000 1.098612
3.000000 1.386294
4.000000 1.609438
5.000000 1.791759
6.000000 1.945910
7.000000 2.079442
8.000000 2.197225
9.000000 2.302585
10.000000 2.397895
*/ 

           
       

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