ECVT(3C)                COMMAND REFERENCE                ECVT(3C)



NAME
     ecvt, fcvt, gcvt - output conversion

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;
     char *buf;

DESCRIPTION
     ecvt converts the value to a null-terminated string of
     ndigit ASCII digits and returns a pointer thereto.  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
     nonzero; otherwise it is zero. The low-order digit is
     rounded.

     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 ndigits.

     gcvt converts the value to a null-terminated ASCII string in
     buf and returns a pointer to buf. It attempts to produce
     ndigit significant digits in FORTRAN F-format if possible,
     otherwise E-format, and get it ready for printing. Trailing
     zeros may be suppressed.

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

     ecvt has an internal static buffer size of 80 characters.
     Writing more than 80 characters (including a terminating
     null, if any) will overwrite the internal data and may abort
     the function.

SEE ALSO
     printf(3s).








Printed 3/13/89                                                 1

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