qecvt_r

(3)

convert a floating-point number to a string

Library functionsmanpages-dev 6.9.1-1also documents ecvt_r, fcvt_r, qfcvt_r

#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

LIBRARY

Standard C library (libc, -lc)

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 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.