—
NAME
ecvt_r, fcvt_r, qecvt_r, qfcvt_r - convert a floating-point number to a string
LIBRARY
Standard C library (libc, -lc)
SYNOPSIS
bash
#include <stdlib.h>bash
[[deprecated]] int ecvt_r(double \nnumber\n, int \nndigits\n,\n
\n int *restrict \ndecpt\n, int *restrict \nsign\n,\n
\n char *restrict \nbuf\n, size_t \nlen\n);\n
\n[[deprecated]] int fcvt_r(double \nnumber\n, int \nndigits\n,\n
\n int *restrict \ndecpt\n, int *restrict \nsign\n,\n
\n char *restrict \nbuf\n, size_t \nlen\n);bash
[[deprecated]] int qecvt_r(long double \nnumber\n, int \nndigits\n,\n
\n int *restrict \ndecpt\n, int *restrict \nsign\n,\n
\n char *restrict \nbuf\n, size_t \nlen\n);\n
\n[[deprecated]] int qfcvt_r(long double \nnumber\n, int \nndigits\n,\n
\n int *restrict \ndecpt\n, int *restrict \nsign\n,\n
\n char *restrict \nbuf\n, size_t \nlen\n);ecvt_r(), fcvt_r(), qecvt_r(), qfcvt_r():
bash
\n
/* glibc >= 2.19: */ _DEFAULT_SOURCE
\n
|| /* glibc <= 2.19: */ _SVID_SOURCE || _BSD_SOURCEDESCRIPTION
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 size len. 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 |
| ecvt_r (), fcvt_r (), qecvt_r (), qfcvt_r () | Thread safety | MT-Safe |
STANDARDS
GNU.
NOTES
These functions are obsolete. Instead, sprintf(3) is recommended.
SEE ALSO
ecvt(3), qecvt(3), sprintf(3)