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)
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