1ECVT_R(3) Linux Programmer's Manual ECVT_R(3)
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6 ecvt_r, fcvt_r, qecvt_r, qfcvt_r - convert a floating-point number to a
7 string
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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(): _SVID_SOURCE || _BSD_SOURCE
27 || _XOPEN_SOURCE >= 500
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30 The functions ecvt_r(), fcvt_r(), qecvt_r() and qfcvt_r() are identical
31 to ecvt(3), fcvt(3), qecvt(3) and qfcvt(3), respectively, except that
32 they do not return their result in a static buffer, but instead use the
33 supplied buf of size len. See ecvt(3) and qecvt(3).
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36 These functions return 0 on success, and -1 otherwise.
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39 These functions are GNU extensions.
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42 These functions are obsolete. Instead, sprintf(3) is recommended.
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45 ecvt(3), qecvt(3), sprintf(3)
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48 This page is part of release 3.22 of the Linux man-pages project. A
49 description of the project, and information about reporting bugs, can
50 be found at http://www.kernel.org/doc/man-pages/.
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54GNU 2007-07-26 ECVT_R(3)