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

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

9       #include <stdlib.h>
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11       char *qecvt(long double number, int ndigits, int *restrict decpt,
12                   int *restrict sign);
13       char *qfcvt(long double number, int ndigits, int *restrict decpt,
14                   int *restrict sign);
15       char *qgcvt(long double number, int ndigit, char *buf);
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17   Feature Test Macro Requirements for glibc (see feature_test_macros(7)):
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19       qecvt(), qfcvt(), qgcvt():
20           Since glibc 2.19:
21               _DEFAULT_SOURCE
22           In glibc up to and including 2.19:
23               _SVID_SOURCE
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DESCRIPTION

26       The  functions  qecvt(), qfcvt(), and qgcvt() are identical to ecvt(3),
27       fcvt(3), and gcvt(3) respectively, except that they use a  long  double
28       argument number.  See ecvt(3) and gcvt(3).
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ATTRIBUTES

31       For  an  explanation  of  the  terms  used  in  this  section,  see at‐
32       tributes(7).
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34       ┌───────────────────────────────┬───────────────┬──────────────────────┐
35       │Interface                      │ Attribute     │ Value                │
36       ├───────────────────────────────┼───────────────┼──────────────────────┤
37       │qecvt()                        │ Thread safety │ MT-Unsafe race:qecvt │
38       ├───────────────────────────────┼───────────────┼──────────────────────┤
39       │qfcvt()                        │ Thread safety │ MT-Unsafe race:qfcvt │
40       ├───────────────────────────────┼───────────────┼──────────────────────┤
41       │qgcvt()                        │ Thread safety │ MT-Safe              │
42       └───────────────────────────────┴───────────────┴──────────────────────┘
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CONFORMING TO

45       SVr4.  Not seen in most common  UNIX  implementations,  but  occurs  in
46       SunOS.  Supported by glibc.
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NOTES

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

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

55       This  page  is  part of release 5.13 of the Linux man-pages project.  A
56       description of the project, information about reporting bugs,  and  the
57       latest     version     of     this    page,    can    be    found    at
58       https://www.kernel.org/doc/man-pages/.
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62GNU                               2021-03-22                          QECVT(3)
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