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CentOS 7.0 - man page for fcvt_r (centos section 3)

ECVT_R(3)				      Linux Programmer's Manual 				    ECVT_R(3)

NAME
ecvt_r, fcvt_r, qecvt_r, qfcvt_r - convert a floating-point number to a string
SYNOPSIS
#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); Feature Test Macro Requirements for glibc (see feature_test_macros(7)): ecvt_r(), fcvt_r(), qecvt_r(), qfcvt_r(): _SVID_SOURCE || _BSD_SOURCE || _XOPEN_SOURCE >= 500
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.
CONFORMING TO
These functions are GNU extensions.
NOTES
These functions are obsolete. Instead, sprintf(3) is recommended.
SEE ALSO
ecvt(3), qecvt(3), sprintf(3)
COLOPHON
This page is part of release 3.53 of the Linux man-pages project. A description of the project, and informa- tion about reporting bugs, can be found at http://www.kernel.org/doc/man-pages/.
GNU
2007-07-26 ECVT_R(3)


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