clog2(3) Library Functions Manual clog2(3) clog2, clog2f, clog2l - -2 (libm -lm) #include double complex clog2(double complex z); float complex clog2f(float complex z); long double complex clog2l(long double complex z); clog2(z) clog(z)/log(2). float long double. z . . C99. glibc glibc 2.19. cabs(3), cexp(3), clog(3), clog10(3), complex(7) 3 . . : . 6.18 8 2026 clog2(3)