term% cat index.txt ECVT(3) Library Functions Manual 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 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 similar to ecvt and produces output for the Fortran format
F*.ndigit. If decpt ≤ −ndigit, then the returned string is null. Oth‐
erwise, decpt+ndigit characters are returned.
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.
ECVT(3)