ecvt_r(3) - Linux manual page (original) (raw)

ecvtr(3) Library Functions Manual ecvtr(3)

NAME top

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

LIBRARY top

   Standard C library (_libc_, _-lc_)

SYNOPSIS top

   **#include <stdlib.h>**

   **[[deprecated]] int ecvt_r(double** _number_**, int** _ndigits_**,**
                             **int *restrict** _decpt_**, int *restrict** _sign_**,**
                             **char *restrict** _buf_**, size_t** _size_**);**
   **[[deprecated]] int fcvt_r(double** _number_**, int** _ndigits_**,**
                             **int *restrict** _decpt_**, int *restrict** _sign_**,**
                             **char *restrict** _buf_**, size_t** _size_**);**

   **[[deprecated]] int qecvt_r(long double** _number_**, int** _ndigits_**,**
                             **int *restrict** _decpt_**, int *restrict** _sign_**,**
                             **char *restrict** _buf_**, size_t** _size_**);**
   **[[deprecated]] int qfcvt_r(long double** _number_**, int** _ndigits_**,**
                             **int *restrict** _decpt_**, int *restrict** _sign_**,**
                             **char *restrict** _buf_**, size_t** _size_**);**

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 top

   The functions **ecvt_r**(), **fcvt_r**(), **qecvt_r**(), and **qfcvt_r**() are
   identical to [ecvt(3)](../man3/ecvt.3.html), [fcvt(3)](../man3/fcvt.3.html), [qecvt(3)](../man3/qecvt.3.html), and [qfcvt(3)](../man3/qfcvt.3.html),
   respectively, except that they do not return their result in a
   static buffer, but instead use the supplied _buf_ of size _size_.  See
   [ecvt(3)](../man3/ecvt.3.html) and [qecvt(3)](../man3/qecvt.3.html).

RETURN VALUE top

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

ATTRIBUTES top

   For an explanation of the terms used in this section, see
   [attributes(7)](../man7/attributes.7.html).
   ┌──────────────────────────────────────┬───────────────┬─────────┐
   │ **Interface** │ **Attribute** │ **Value** │
   ├──────────────────────────────────────┼───────────────┼─────────┤
   │ **ecvt_r**(), **fcvt_r**(), **qecvt_r**(),       │ Thread safety │ MT-Safe │
   │ **qfcvt_r**()                            │               │         │
   └──────────────────────────────────────┴───────────────┴─────────┘

STANDARDS top

   GNU.

NOTES top

   These functions are obsolete.  Instead, [sprintf(3)](../man3/sprintf.3.html) is recommended.

SEE ALSO top

   [ecvt(3)](../man3/ecvt.3.html), [qecvt(3)](../man3/qecvt.3.html), [sprintf(3)](../man3/sprintf.3.html)

COLOPHON top

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Linux man-pages 6.10 2024-11-17 ecvtr(3)

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