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QECVT(3)                                                                Linux Programmer's Manual                                                               QECVT(3)

NAME
       qecvt, qfcvt, qgcvt - convert a floating-point number to a string

SYNOPSIS
       #include <stdlib.h>

       char *qecvt(long double number, int ndigits, int *restrict decpt,
                   int *restrict sign);
       char *qfcvt(long double number, int ndigits, int *restrict decpt,
                   int *restrict sign);
       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              │
       └─────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────┴───────────────┴──────────────────────┘

CONFORMING TO
       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)

GNU                                                                            2021-03-22                                                                       QECVT(3)

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