FREXP(3)                                                              FREXP(3)



NAME
       frexp, ldexp, modf - split into mantissa and exponent

SYNOPSIS
       double frexp(value, eptr)
       double value;
       int *eptr;

       double ldexp(value, exp)
       double value;

       double modf(value, iptr)
       double value, *iptr;

DESCRIPTION
       _F_r_e_x_p  returns  the mantissa of a double _v_a_l_u_e as a double quantity, _x_,
       of magnitude less than 1 and stores an integer _n such that _v_a_l_u_e = _x∗2_n
       indirectly through _e_p_t_r_.

       _L_d_e_x_p returns the quantity _v_a_l_u_e_∗_2_e_x_p_.

       _M_o_d_f returns the positive fractional part of _v_a_l_u_e and stores the inte‐
       ger part indirectly through _i_p_t_r_.



7th Edition                      May 15, 1985                         FREXP(3)