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BSD 2.11 - man page for fcvt (bsd section 3)

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ECVT(3) 										  ECVT(3)

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 dig-
       its).  If the sign of the result is negative, the word pointed to  by  sign  is	non-zero,
       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, ready for printing.	Trailing zeros may be suppressed.

SEE ALSO
       printf(3)

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

7th Edition				   May 15, 1985 				  ECVT(3)
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