log, log10

Log calculates the natural logarithm of a value and log10 calculates the base-10 logarithm.

#include <math.h>

double log (double x);

double log10 (double x);

The logarithm of the argument x.: Success.
-HUGE_VAL if x is negative; the function prints a DOMAIN error message to stderr and sets errno to EDOM. -HUGE_VAL if x is 0; the function prints a SING error message to stderr and sets errno to ERANGE.: Failure.

These functions do not return standard ANSI domain or range errors.

Versions	Defined in	Include	Link to
INtime 3.0	intime/rt/include/math.h	math.h	clib.lib