qgcvt(3) [centos man page]

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

NAME

       qecvt, qfcvt, qgcvt - convert a floating-point number to a string

SYNOPSIS

       #include <stdlib.h>

       char *qecvt(long double number, int ndigits, int *decpt, int *sign);

       char *qfcvt(long double number, int ndigits, int *decpt, int *sign);

       char *qgcvt(long double number, int ndigit, char *buf);

   Feature Test Macro Requirements for glibc (see feature_test_macros(7)):

       qecvt(), qfcvt(), qgcvt(): _SVID_SOURCE

DESCRIPTION

       The  functions  qecvt(), qfcvt() and qgcvt() are identical to ecvt(3), fcvt(3) and gcvt(3) respectively, except that they use a long double
       argument number.  See ecvt(3) and gcvt(3).

ATTRIBUTES

   Multithreading (see pthreads(7))
       The qecvt() and qfcvt() functions are not thread-safe.

       The qgcvt() function is thread-safe.

CONFORMING TO

       SVr4.  Not seen in most common UNIX implementations, but occurs in SunOS.  Not supported by libc4 and libc5.  Supported by glibc.

NOTES

       These functions are obsolete.  Instead, sprintf(3) is recommended.

SEE ALSO

       ecvt(3), ecvt_r(3), gcvt(3), sprintf(3)

COLOPHON

       This page is part of release 3.53 of the Linux man-pages project.  A description of the project, and information about reporting bugs,  can
       be found at http://www.kernel.org/doc/man-pages/.

GNU
								    2013-07-22								  QECVT(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():
           /* Glibc since 2.19: */ _DEFAULT_SOURCE
               || /* Glibc versions <= 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 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(),  | Thread safety | MT-Safe |
       |qecvt_r(), qfcvt_r() |               |         |
       +---------------------+---------------+---------+
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 4.15 of the Linux man-pages project.  A description of the project, information about reporting bugs, and  the
       latest version of this page, can be found at https://www.kernel.org/doc/man-pages/.

GNU                                                                 2016-03-15                                                           ECVT_R(3)