qecvt(3) — Linux manual page

qecvt(3)                Library Functions Manual                qecvt(3)

NAME         top

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

LIBRARY         top

       Standard C library (libc, -lc)

SYNOPSIS         top

       #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         top

       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         top

       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         top

       None.

HISTORY         top

       SVr4, SunOS, GNU.

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

SEE ALSO         top

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

Linux man-pages 6.04           2023-03-30                       qecvt(3)

Pages that refer to this page: ecvt(3),  ecvt_r(3)

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