log10(3) Library Functions Manual log10(3) log10, log10f, log10l - 10 (libm -lm) #include double log10(double x); float log10f(float x); long double log10l(long double x); glibc ( feature_test_macros(7)): log10f() log10l(): _ISOC99_SOURCE || _POSIX_C_SOURCE >= 200112L || /* Since glibc 2.19: */ _DEFAULT_SOURCE || /* glibc <= 2.19: */ _BSD_SOURCE || _SVID_SOURCE 10 x. 10 x. x 0 1 NaN log(3). math_error(7) . log(3). attributes(7). +------------+------------------------------------+--------------------+ || | | +------------+------------------------------------+--------------------+ |log10() | | MT-Safe | |log10f() | | | |log10l() | | | +------------+------------------------------------+--------------------+ C11, POSIX.1-2008. C99 POSIX.1-2001. double SVr4 4.3BSD C89. cbrt(3) clog10(3) exp10(3) log(3) log2(3) sqrt(3) 3 . . : . 6.18 8 2026 log10(3)