mirror of https://github.com/mkerrisk/man-pages
119 lines
3.2 KiB
Groff
119 lines
3.2 KiB
Groff
.\" Copyright (C) 2002 Andries Brouwer <aeb@cwi.nl>
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.\"
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.\" %%%LICENSE_START(VERBATIM)
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.\" Permission is granted to make and distribute verbatim copies of this
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.\" manual provided the copyright notice and this permission notice are
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.\" preserved on all copies.
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.\"
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.\" Permission is granted to copy and distribute modified versions of this
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.\" manual under the conditions for verbatim copying, provided that the
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.\" entire resulting derived work is distributed under the terms of a
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.\" permission notice identical to this one.
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.\"
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.\" Since the Linux kernel and libraries are constantly changing, this
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.\" manual page may be incorrect or out-of-date. The author(s) assume no
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.\" responsibility for errors or omissions, or for damages resulting from
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.\" the use of the information contained herein. The author(s) may not
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.\" have taken the same level of care in the production of this manual,
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.\" which is licensed free of charge, as they might when working
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.\" professionally.
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.\"
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.\" Formatted or processed versions of this manual, if unaccompanied by
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.\" the source, must acknowledge the copyright and authors of this work.
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.\" %%%LICENSE_END
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.\"
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.\" This replaces an earlier man page written by Walter Harms
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.\" <walter.harms@informatik.uni-oldenburg.de>.
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.\"
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.TH QECVT 3 2015-03-02 "GNU" "Linux Programmer's Manual"
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.SH NAME
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qecvt, qfcvt, qgcvt \- convert a floating-point number to a string
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.SH SYNOPSIS
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.B #include <stdlib.h>
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.sp
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.BI "char *qecvt(long double " number ", int " ndigits ", int *" decpt ,
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.BI "int *" sign );
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.sp
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.BI "char *qfcvt(long double " number ", int " ndigits ", int *" decpt ,
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.BI "int *" sign );
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.sp
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.BI "char *qgcvt(long double " number ", int " ndigit ", char *" buf );
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.sp
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.in -4n
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Feature Test Macro Requirements for glibc (see
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.BR feature_test_macros (7)):
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.in
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.sp
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.ad l
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.BR qecvt (),
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.BR qfcvt (),
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.BR qgcvt ():
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_SVID_SOURCE
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.ad b
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.\" FIXME . The full FTM picture looks to have be something like the
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.\" following mess:
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.\" glibc 2.20 onward
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.\" _DEFAULT_SOURCE
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.\" glibc 2.18 to glibc 2.19
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.\" _BSD_SOURCE || _SVID_SOURCE
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.\" glibc 2.10 to glibc 2.17
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.\" _SVID_SOURCE || (_XOPEN_SOURCE >= 500 ||
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.\" (_XOPEN_SOURCE && _XOPEN_SOURCE_EXTENDED) &&
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.\" ! (_POSIX_C_SOURCE >= 200809L || _XOPEN_SOURCE >= 700))
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.\" Before glibc 2.10:
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.\" _SVID_SOURCE || _XOPEN_SOURCE >= 500 ||
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.\" (_XOPEN_SOURCE && _XOPEN_SOURCE_EXTENDED)
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.SH DESCRIPTION
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The functions
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.BR qecvt (),
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.BR qfcvt (),
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and
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.BR qgcvt ()
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are identical to
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.BR ecvt (3),
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.BR fcvt (3),
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and
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.BR gcvt (3)
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respectively, except that they use a
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.I "long double"
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argument
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.IR number .
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See
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.BR ecvt (3)
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and
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.BR gcvt (3).
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.SH ATTRIBUTES
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For an explanation of the terms used in this section, see
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.BR attributes (7).
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.TS
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allbox;
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lb lb lb
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l l l.
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Interface Attribute Value
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T{
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.BR qecvt ()
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T} Thread safety MT-Unsafe race:qecvt
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T{
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.BR qfcvt ()
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T} Thread safety MT-Unsafe race:qfcvt
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T{
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.BR qgcvt ()
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T} Thread safety MT-Safe
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.TE
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.SH CONFORMING TO
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SVr4.
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Not seen in most common UNIX implementations,
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but occurs in SunOS.
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.\" Not supported by libc4 and libc5.
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Supported by glibc.
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.SH NOTES
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These functions are obsolete.
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Instead,
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.BR snprintf (3)
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is recommended.
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.SH SEE ALSO
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.BR ecvt (3),
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.BR ecvt_r (3),
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.BR gcvt (3),
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.BR sprintf (3)
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