C log10() Prototype
double log10( double arg );
It takes a single argument and returns a value of type float.
[Mathematics] log10x = log10(x) [In C programming]
It is defined in <math.h> header file.
In order to find the log10() of long double or float, use the following prototype.
long double log10l( long double arg); float log10f( float arg);
C log10() range
| Argument | remarks |
|---|---|
| arg > 0 | Finds the log10 of the argument |
| arg < 0 | Shows run-time error. |
Example: C log10() function
#include <stdio.h>
#include <math.h>
int main()
{
double num = 4.00, result;
result = log10(num);
printf("log10(%.1f) = %.2f", num, result);
return 0;
}
log(4.0) = 0.60