qecvt, qfcvt, qgcvt - convert a floating-point number to a string
#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
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).
For an explanation of the terms used in this section, see
attributes(7).
| Interface |
Attribute |
Value |
| qecvt () |
Thread safety |
MT-Unsafe race:qecvt |
| qfcvt () |
Thread safety |
MT-Unsafe race:qfcvt |
| qgcvt () |
Thread safety |
MT-Safe |
SVr4. Not seen in most common UNIX implementations, but occurs in SunOS.
Supported by glibc.
These functions are obsolete. Instead,
snprintf(3) is recommended.
ecvt(3),
ecvt_r(3),
gcvt(3),
sprintf(3)