qecvt - Man Page

convert a floating-point number to a string

Library

Standard C library (libc, -lc)

Synopsis

#include <stdlib.h>

[[deprecated]] char *qecvt(long double number, int ndigits,
                           int *restrict decpt, int *restrict sign);
[[deprecated]] char *qfcvt(long double number, int ndigits,
                           int *restrict decpt, int *restrict sign);
[[deprecated]] char *qgcvt(long double number, int ndigit, char *buf);

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

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

    Since glibc 2.19:
        _DEFAULT_SOURCE
    In glibc up to and including 2.19:
        _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

For an explanation of the terms used in this section, see attributes(7).

InterfaceAttributeValue
qecvt()Thread safetyMT-Unsafe race:qecvt
qfcvt()Thread safetyMT-Unsafe race:qfcvt
qgcvt()Thread safetyMT-Safe

Standards

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

Notes

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

See Also

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

Referenced By

ecvt(3), ecvt_r(3).

The man pages qfcvt(3) and qgcvt(3) are aliases of qecvt(3).

2022-12-15 Linux man-pages 6.02