absolute value of floating-point number NAME fabs, fabsf, fabsl - absolute value of floating-point number LIBRARY Math library ( libm , -lm...absolute value of floating-point number NAME fabs, fabsf, fabsl - absolute value of floating-point number LIBRARY Math library ( libm , -lm...absolute value of floating-point number NAME fabs, fabsf, fabsl - absolute value of floating-point number LIBRARY Math library ( libm , -lm......ince GCC 3.0) llabs () and imaxabs () as built-in functions. SEE ALSO cabs (3), ceil (3), fabs (3), floor (3), rint (3)...ince GCC 3.0) llabs () and imaxabs () as built-in functions. SEE ALSO cabs (3), ceil (3), fabs (3), floor (3), rint (3)...ince GCC 3.0) llabs () and imaxabs () as built-in functions. SEE ALSO cabs (3), ceil (3), fabs (3), floor (3), rint (3)...ince GCC 3.0) llabs () and imaxabs () as built-in functions. SEE ALSO cabs (3), ceil (3), fabs (3), floor (3), rint (3)...em's floating-point representation. If FLT_RADIX is 2, logb( x ) is similar to floor(log2(fabs( x ))), except that the latter may give an incorrect integer due to intermediate r…...em's floating-point representation. If FLT_RADIX is 2, logb( x ) is similar to floor(log2(fabs( x ))), except that the latter may give an incorrect integer due to intermediate r…...em's floating-point representation. If FLT_RADIX is 2, logb( x ) is similar to floor(log2(fabs( x ))), except that the latter may give an incorrect integer due to intermediate r…