@(#)ecvt.3 6.1 (Berkeley) 05/15/85
ECVT 3 ""
.AT 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 digits).
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.