1ECVT_R(3)                  Linux Programmer's Manual                 ECVT_R(3)
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NAME

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

10       #include <stdlib.h>
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12       int ecvt_r(double number, int ndigits, int *decpt,
13                  int *sign, char *buf, size_t len);
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15       int fcvt_r(double number, int ndigits, int *decpt,
16                  int *sign, char *buf, size_t len);
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18       int qecvt_r(long double number, int ndigits, int *decpt,
19                  int *sign, char *buf, size_t len);
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21       int qfcvt_r(long double number, int ndigits, int *decpt,
22                  int *sign, char *buf, size_t len);
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24   Feature Test Macro Requirements for glibc (see feature_test_macros(7)):
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26       ecvt_r(), fcvt_r(), qecvt_r(), qfcvt_r():
27           /* Glibc since 2.19: */ _DEFAULT_SOURCE
28               || /* Glibc versions <= 2.19: */ _SVID_SOURCE || _BSD_SOURCE
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DESCRIPTION

31       The functions ecvt_r(), fcvt_r(), qecvt_r(), and qfcvt_r() are  identi‐
32       cal  to  ecvt(3), fcvt(3), qecvt(3), and qfcvt(3), respectively, except
33       that they do not return their result in a static  buffer,  but  instead
34       use the supplied buf of size len.  See ecvt(3) and qecvt(3).
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RETURN VALUE

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

40       For   an   explanation   of   the  terms  used  in  this  section,  see
41       attributes(7).
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43       ┌─────────────────────┬───────────────┬─────────┐
44       │Interface            │ Attribute     │ Value   │
45       ├─────────────────────┼───────────────┼─────────┤
46       │ecvt_r(), fcvt_r(),  │ Thread safety │ MT-Safe │
47       │qecvt_r(), qfcvt_r() │               │         │
48       └─────────────────────┴───────────────┴─────────┘

CONFORMING TO

50       These functions are GNU extensions.
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NOTES

53       These functions are obsolete.  Instead, sprintf(3) is recommended.
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SEE ALSO

56       ecvt(3), qecvt(3), sprintf(3)
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COLOPHON

59       This page is part of release 4.15 of the Linux  man-pages  project.   A
60       description  of  the project, information about reporting bugs, and the
61       latest    version    of    this    page,    can     be     found     at
62       https://www.kernel.org/doc/man-pages/.
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66GNU                               2016-03-15                         ECVT_R(3)
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