Syntax

#include <math.h>
double log10(double x);

log10 calculates the base 10 logarithm of x.

log10 returns the computed value. If x is negative, log10 sets errno to EDOM and may return the value -HUGE_VAL. If x is zero, log10 returns the value -HUGE_VAL, and may set errno to ERANGE.

This example calculates the base 10 logarithm of 1000.0.

#include <math.h>

int main(void)
{
   double x = 1000.0,y;

   y = log10(x);
   printf("The base 10 logarithm of %lf is %lf\n", x, y);
   return 0;

   /****************************************************************************
      The output should be:

      The base 10 logarithm of 1000.000000 is 3.000000
   ****************************************************************************/
}

• exp
  
• log
  
• pow

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