Synopsis
#include <math.h>
float log10f(float x);
Description
log10f computes the base-10 logarithm of x.
Fast math library behavior
If x = 0, errno is set to ERANGE
and log10f returns -HUGE_VALF.
If x < 0, errno is set to EDOM
and log10f returns -HUGE_VALF.
IEC 60559 math library behavior
If x < 0 or x = -∞, log10f returns
NaN with signal.
If x = 0, log10f returns -∞ with signal.
If x = ∞, log10f returns ∞.
If x = NaN, log10f returns x
with no signal.
Portability
log10f conforms to ISO/IEC 9899:1990 (C90) and ISO/IEC 9899:1999 (C99).