


      ECVT(3C)                    (UNIX 5.0)                   ECVT(3C)



      NAME
           ecvt, fcvt, gcvt - convert floating-point number to string

      SYNTAX
           char *ecvt (value, ndigit, decpt, sign)
           double value;
           int ndigit, *decpt, *sign;

           char *fcvt (value, ndigit, decpt, sign)
           double value;
           int ndigit, *decpt, *sign;

           char *gcvt (value, ndigit, buf)
           double value;
           char *buf;

      DESCRIPTION
           Ecvt converts value to a null-terminated string of ndigit
           digits and returns a pointer thereto.  The low-order digit
           is rounded.  The position of the decimal point relative to
           the beginning of the string is stored indirectly through
           decpt (negative means to the left of the returned digits).
           The decimal point is not included in the returned string.
           If the sign of the result is negative, the word pointed to
           by sign is non-zero, otherwise it is zero.

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

           Gcvt converts the value to a null-terminated string in the
           array pointed to by buf and returns buf.  It attempts to
           produce ndigit significant digits in Fortran F-format if
           possible, otherwise E-format, ready for printing. A minus
           sign, if there is one, or a decimal point will be included
           as part of the returned string.  Trailing zeros are
           suppressed.

      SEE ALSO
           printf(3S).

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











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