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



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

SYNOPSIS
       #include <stdlib.h>

       int ecvt_r(double number, int ndigits, int *decpt,
                  int *sign, char *buf, size_t len);

       int fcvt_r(double number, int ndigits, int *decpt,
                  int *sign, char *buf, size_t len);

       int qecvt_r(long double number, int ndigits, int *decpt,
                  int *sign, char *buf, size_t len);

       int qfcvt_r(long double number, int ndigits, int *decpt,
                  int *sign, char *buf, size_t len);

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

       ecvt_r(), fcvt_r(), qecvt_r(), qfcvt_r(): _SVID_SOURCE || _BSD_SOURCE || _XOPEN_SOURCE >= 500

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.

CONFORMING TO
       These functions are GNU extensions.

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

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

COLOPHON
       This  page  is part of release 3.22 of the Linux man-pages project.  A description of the project, and informa-
       tion about reporting bugs, can be found at http://www.kernel.org/doc/man-pages/.



GNU                               2007-07-26                         ECVT_R(3)