LOG10 - decimal logarithmic function.

(ANSI Standard)

Usage:

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

Where:

double x, y;
 

Description:

"log10" returns the logarithm of "x" base 10. If "x" is non-positive, "log10" returns a huge negative value and sets "errno" to EDOM. If "x" is zero, "log10" sets "errno" to ERANGE.

See Also:

expl c lib errno

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