Name
ecvt_r, fcvt_r, qecvt_r, qfcvt_r - convert a floating-point number to a stringLibrary
Standard C library ( libc ", " -lc )Synopsis
#include <stdlib.h> [[deprecated]] int ecvt_r(double " number ", int ndigits ,
int *restrict " decpt ", int *restrict sign ,
char *restrict " buf ", size_t len );
[[deprecated]] int fcvt_r(double " number ", int ndigits ,
int *restrict " decpt ", int *restrict sign ,
char *restrict " buf ", size_t len );
[[deprecated]] int qecvt_r(long double " number ", int ndigits ,
int *restrict " decpt ", int *restrict sign ,
char *restrict " buf ", size_t len );
[[deprecated]] int qfcvt_r(long double " number ", int ndigits ,
int *restrict " decpt ", int *restrict sign ,
char *restrict " buf ", size_t len );
Feature Test Macro Requirements for glibc (see feature_test_macros(7)):
ecvt_r() fcvt_r() qecvt_r() qfcvt_r()
/* glibc >= 2.19: */ _DEFAULT_SOURCE || /* glibc <= 2.19: */ _SVID_SOURCE || _BSD_SOURCE
Description
The functions ecvt_r() fcvt_r() qecvt_r() and qfcvt_r() are identical to ecvt(3), fcvt(3), qecvt(3), and qfcvt(3), respectively, except that they do not return their result in a static buffer, but instead use the supplied buf of sizelen
. See ecvt(3) and qecvt(3). Return Value
These functions return 0 on success, and -1 otherwise.Attributes
For an explanation of the terms used in this section, see attributes(7).Interface | Attribute | Value |
T} | Thread safety | MT-Safe |