QECVT(3) Linux Programmers Manual QECVT(3)
qecvt, qfcvt, qgcvt - convert a floating-point number to a string
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 || _BSD_SOURCE ||
_XOPEN_SOURCE >= 500
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).
SVr4. Not seen in most common Unix implementations, but occurs in
SunOS. Not supported by libc4 and libc5. Supported by glibc.
These functions are obsolete. Instead, sprintf(3) is recommended.
ecvt(3), ecvt_r(3), gcvt(3), sprintf(3)
This page is part of release 3.05 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 2007-07-26 QECVT(3)