ecvt(3C)                                                 ecvt(3C)



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

SYNOPSIS
     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;
     int ndigit;
     char *buf;

DESCRIPTION
     ecvt converts value to a null-terminated string of ndigit
     digits and returns a pointer thereto.  The high-order digit
     is non-zero, unless the value is zero.  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 printf ''%f'' (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 values returned by ecvt " and " fcvt point to a single
     static data array whose content is overwritten by each call.









Page 1                        CX/UX Programmer's Reference Manual