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QECVT(3) Library Functions Manual QECVT(3)

NAME

qecvt, qfcvt, qgcvt - 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).

Interface Attribute Value
qecvt () Thread safety MT-Unsafe race:qecvt
qfcvt () Thread safety MT-Unsafe race:qfcvt
qgcvt () Thread safety MT-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)

2022-10-09 Linux man-pages 6.01