Originální popis anglicky:
ecvt_r, fcvt_r, qecvt_r, qfcvt_r - convert a floating-point number to a string
Návod, kniha: Linux Programmer's Manual
#include <stdlib.h>
int ecvt_r(double number, int ndigits, int
*decpt, int *sign, char *buf,
size_t len);
int fcvt_r(double number, int ndigits, int
*decpt, int *sign, char *buf,
size_t len);
int qecvt_r(long double number, int ndigits, int
*decpt, int *sign, char *buf,
size_t len);
int qfcvt_r(long double number, int ndigits, int
*decpt, int *sign, char *buf,
size_t len);
The functions
ecvt_r,
fcvt_r,
qecvt_r and
qfcvt_r
are identical to
ecvt,
fcvt,
qecvt and
qfcvt,
respectively, except that they do not return their result in a static buffer,
but instead use the supplied
buf of size
len. See
ecvt(3)
and
qecvt(3).
These functions return 0 on success, and -1 otherwise.
These functions are obsolete. Instead,
sprintf() is recommended.
These functions are GNU extensions.
ecvt(3),
qecvt(3),
sprintf(3)
