4.4BSD/usr/share/man/cat3/frexp.0

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FREXP(3)                    BSD Programmer's Manual                   FREXP(3)

NNAAMMEE
     ffrreexxpp - convert floating-point number to fractional and integral compo-
     nents

SSYYNNOOPPSSIISS
     ##iinncclluuddee <<mmaatthh..hh>>

     _d_o_u_b_l_e
     ffrreexxpp(_d_o_u_b_l_e _v_a_l_u_e, _i_n_t _*_e_x_p);

DDEESSCCRRIIPPTTIIOONN
     The ffrreexxpp() function breaks a floating-point number into a normalized
     fraction and an integral power of 2.  It stores the integer in the _i_n_t
     object pointed to by _e_x_p.

RREETTUURRNN VVAALLUUEESS
     The ffrreexxpp() function returns the value _x, such that _x is a _d_o_u_b_l_e with
     magnitude in the interval [1/2, 1] or zero, and _v_a_l_u_e equals _x times 2
     raised to the power _*_e_x_p. If _v_a_l_u_e is zero, both parts of the result are
     zero.

SSEEEE AALLSSOO
     ldexp(3),  modf(3),  math(3)

SSTTAANNDDAARRDDSS
     The ffrreexxpp() function conforms to ANSI C X3.159-1989 (``ANSI C '').

4.4BSD                           June 4, 1993                                1