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)