ecvt(3)                    DG/UX 4.30                     ecvt(3)



     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 decimal point is
          not included in the returned string.  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).
          If the sign of the result is negative, the word pointed to
          by sign is non-zero; otherwise, it is zero.

          Fcvt performs the same conversion as ecvt, but ndigit
          specifies the number of places to the right of the implied
          decimal point to be used, rather than the total number of
          places.  So, where ecvt(12.3456, 3, decpt, sign) returns a
          pointer to character string 123\0, fcvt(12.3456, 3, decpt,
          sign) returns a pointer to character string 123456\0.

          Gcvt converts the value to a null-terminated string in the
          array pointed to by buf and returns buf.  It tries to
          produce ndigit significant digits in FORTRAN F-format if
          possible. If it cannot, it produces E-format, ready for
          printing. A minus sign or a decimal point will be included
          as part of the returned string.  Trailing zeros are
          suppressed.

     SEE ALSO
          printf(3S).

     CAVEATS
          The values returned by ecvt and fcvt point to a single
          static data array whose content is overwritten by each call.






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