ecvt_r(3) - Man pages

ecvt_r(3)                   Library Functions Manual                  ecvt_r(3)

NAME
       ecvt_r,  fcvt_r, qecvt_r, qfcvt_r - convert a floating-point number to a
       string

LIBRARY
       Standard C library (libc, -lc)

SYNOPSIS
       #include <stdlib.h>

       [[deprecated]] int ecvt_r(double number, int ndigits,
                                 int *restrict decpt, int *restrict sign,
                                 char *restrict buf, size_t len);
       [[deprecated]] int fcvt_r(double number, int ndigits,
                                 int *restrict decpt, int *restrict sign,
                                 char *restrict buf, size_t len);

       [[deprecated]] int qecvt_r(long double number, int ndigits,
                                 int *restrict decpt, int *restrict sign,
                                 char *restrict buf, size_t len);
       [[deprecated]] int qfcvt_r(long double number, int ndigits,
                                 int *restrict decpt, int *restrict sign,
                                 char *restrict buf, size_t len);

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

       ecvt_r(), fcvt_r(), qecvt_r(), qfcvt_r():
           /* glibc >= 2.19: */ _DEFAULT_SOURCE
               || /* glibc <= 2.19: */ _SVID_SOURCE || _BSD_SOURCE

DESCRIPTION
       The functions ecvt_r(), fcvt_r(), qecvt_r(), and qfcvt_r() are identical
       to ecvt(3), fcvt(3), qecvt(3), and qfcvt(3), respectively,  except  that
       they  do not return their result in a static buffer, but instead use the
       supplied buf of size len.  See ecvt(3) and qecvt(3).

RETURN VALUE
       These functions return 0 on success, and -1 otherwise.

ATTRIBUTES
       For an explanation of the terms used in this section, see attributes(7).
       ┌────────────────────────────────────────────┬───────────────┬─────────┐
       │ Interface                                  │ Attribute     │ Value   │
       ├────────────────────────────────────────────┼───────────────┼─────────┤
       │ ecvt_r(), fcvt_r(), qecvt_r(), qfcvt_r()   │ Thread safety │ MT-Safe │
       └────────────────────────────────────────────┴───────────────┴─────────┘

STANDARDS
       GNU.

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

SEE ALSO
       ecvt(3), qecvt(3), sprintf(3)

Linux man-pages 6.9.1              2024-05-02                         ecvt_r(3)

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