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

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


NNAAMMEE
       ecvt, fcvt, gcvt - output conversion

SSYYNNOOPPSSIISS
       cchhaarr **eeccvvtt((vvaalluuee,, nnddiiggiitt,, ddeeccpptt,, ssiiggnn))
       ddoouubbllee vvaalluuee;;
       iinntt nnddiiggiitt,, **ddeeccpptt,, **ssiiggnn;;

       cchhaarr **ffccvvtt((vvaalluuee,, nnddiiggiitt,, ddeeccpptt,, ssiiggnn))
       ddoouubbllee vvaalluuee;;
       iinntt nnddiiggiitt,, **ddeeccpptt,, **ssiiggnn;;

       cchhaarr **ggccvvtt((vvaalluuee,, nnddiiggiitt,, bbuuff))
       ddoouubbllee vvaalluuee;;
       cchhaarr **bbuuff;;

DDEESSCCRRIIPPTTIIOONN
       TThheessee iinntteerrffaacceess aarree oobbssoolleetteedd bbyy pprriinnttff((33))..
       TThheeyy aarree aavvaaiillaabbllee ffrroomm tthhee ccoommppaattiibbiilliittyy lliibbrraarryy,, lliibbccoomm--
       ppaatt..

       _E_c_v_t converts the _v_a_l_u_e to  a  null-terminated  string  of
       _n_d_i_g_i_t  ASCII  digits  and returns a pointer thereto.  The
       position of the decimal point relative to the beginning of
       the  string  is  stored indirectly through _d_e_c_p_t (negative
       means to the left of the returned digits).  If the sign of
       the  result  is  negative,  the word pointed to by _s_i_g_n is
       non-zero, otherwise it is zero.  The  low-order  digit  is
       rounded.

       _F_c_v_t  is  identical to _e_c_v_t, except that the correct digit
       has been rounded for Fortran F-format output of the number
       of digits specified by _n_d_i_g_i_t_s.

       _G_c_v_t  converts the _v_a_l_u_e to a null-terminated ASCII string
       in _b_u_f and returns a pointer to _b_u_f_.  It attempts to  pro-
       duce _n_d_i_g_i_t significant digits in Fortran F format if pos-
       sible, otherwise E format, ready for  printing.   Trailing
       zeros may be suppressed.

SSEEEE AALLSSOO
       printf(3)

BBUUGGSS
       The  return  values  point to static data whose content is
       overwritten by each call.








7th Edition                May 28, 1992                         1