ldexp(3) Library Functions Manual ldexp(3) ldexp ldexpf ldexpl - 2 (libm -lm) #include double ldexp(double x, int e); float ldexpf(float x, int e); long double ldexpl(long double x, int e); glibc ( feature_test_macros(7)): ldexpf() ldexpl(): _ISOC99_SOURCE || _POSIX_C_SOURCE >= 200112L || /* Since glibc 2.19: */ _DEFAULT_SOURCE || /* glibc <= 2.19: */ _BSD_SOURCE || _SVID_SOURCE x 2 e. x * (2^e). e x. x (NaN) NaN. x ( ) ( ). . HUGE_VAL HUGE_VALF HUGE_VALL x. math_error(7) . : errno ERANGE. (FE_OVERFLOW). errno ERANGE. (FE_UNDERFLOW). attributes(7). +------------+------------------------------------+--------------------+ || | | +------------+------------------------------------+--------------------+ |ldexp(), | | MT-Safe | |ldexpf(), | | | |ldexpl() | | | +------------+------------------------------------+--------------------+ C11, POSIX.1-2008. C99 POSIX.1-2001. double SVr4 4.3BSD C89. frexp(3) modf(3) scalbln(3) 3 . . : . 6.18 8 2026 ldexp(3)