NAME | LIBRARY | SYNOPSIS | DESCRIPTION | ATTRIBUTES | STANDARDS | HISTORY | SEE ALSO | COLOPHON |
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qecvt(3) Library Functions Manual qecvt(3)
qecvt, qfcvt, qgcvt - convert a floating-point number to a string
Standard C library (libc, -lc)
#include <stdlib.h> [[deprecated]] char *qecvt(long double number, int ndigits, int *restrict decpt, int *restrict sign); [[deprecated]] char *qfcvt(long double number, int ndigits, int *restrict decpt, int *restrict sign); [[deprecated]] char *qgcvt(long double number, int ndigit, char *buf); Feature Test Macro Requirements for glibc (see feature_test_macros(7)): qecvt(), qfcvt(), qgcvt(): Since glibc 2.19: _DEFAULT_SOURCE In glibc up to and including 2.19: _SVID_SOURCE
The functions qecvt(), qfcvt(), and qgcvt() are identical to ecvt(3), fcvt(3), and gcvt(3) respectively, except that they use a long double argument number. See ecvt(3) and gcvt(3).
For an explanation of the terms used in this section, see attributes(7). ┌────────────────────────┬───────────────┬──────────────────────┐ │ Interface │ Attribute │ Value │ ├────────────────────────┼───────────────┼──────────────────────┤ │ qecvt() │ Thread safety │ MT-Unsafe race:qecvt │ ├────────────────────────┼───────────────┼──────────────────────┤ │ qfcvt() │ Thread safety │ MT-Unsafe race:qfcvt │ ├────────────────────────┼───────────────┼──────────────────────┤ │ qgcvt() │ Thread safety │ MT-Safe │ └────────────────────────┴───────────────┴──────────────────────┘
None.
SVr4, SunOS, GNU. These functions are obsolete. Instead, snprintf(3) is recommended.
ecvt(3), ecvt_r(3), gcvt(3), sprintf(3)
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Linux man-pages 6.9.1 2024-05-02 qecvt(3)
Pages that refer to this page: ecvt(3), ecvt_r(3)