+++ /dev/null
-.\" Copyright 1993 David Metcalfe (david@prism.demon.co.uk)
-.\"
-.\" %%%LICENSE_START(VERBATIM)
-.\" Permission is granted to make and distribute verbatim copies of this
-.\" manual provided the copyright notice and this permission notice are
-.\" preserved on all copies.
-.\"
-.\" Permission is granted to copy and distribute modified versions of this
-.\" manual under the conditions for verbatim copying, provided that the
-.\" entire resulting derived work is distributed under the terms of a
-.\" permission notice identical to this one.
-.\"
-.\" Since the Linux kernel and libraries are constantly changing, this
-.\" manual page may be incorrect or out-of-date. The author(s) assume no
-.\" responsibility for errors or omissions, or for damages resulting from
-.\" the use of the information contained herein. The author(s) may not
-.\" have taken the same level of care in the production of this manual,
-.\" which is licensed free of charge, as they might when working
-.\" professionally.
-.\"
-.\" Formatted or processed versions of this manual, if unaccompanied by
-.\" the source, must acknowledge the copyright and authors of this work.
-.\" %%%LICENSE_END
-.\"
-.\" References consulted:
-.\" Linux libc source code
-.\" Lewine's _POSIX Programmer's Guide_ (O'Reilly & Associates, 1991)
-.\" 386BSD man pages
-.\" Modified Sat Jul 24 19:40:39 1993 by Rik Faith (faith@cs.unc.edu)
-.\" Modified Fri Jun 25 12:10:47 1999 by Andries Brouwer (aeb@cwi.nl)
-.\"
-.TH ECVT 3 2014-08-19 "" "Linux Programmer's Manual"
-.SH NAME
-ecvt, fcvt \- convert a floating-point number to a string
-.SH SYNOPSIS
-.B #include <stdlib.h>
-.sp
-.BI "char *ecvt(double " number ", int " ndigits ", int *" decpt ,
-.BI "int *" sign );
-.sp
-.BI "char *fcvt(double " number ", int " ndigits ", int *" decpt ,
-.BI "int *" sign );
-.sp
-.in -4n
-Feature Test Macro Requirements for glibc (see
-.BR feature_test_macros (7)):
-.in
-.sp
-.BR ecvt (),
-.BR fcvt ():
-.ad l
-.RS 4
-.PD 0
-.TP 4
-Since glibc 2.12:
-.nf
-_SVID_SOURCE ||
- (_XOPEN_SOURCE\ >=\ 500 ||
- _XOPEN_SOURCE\ &&\ _XOPEN_SOURCE_EXTENDED) &&
- !(_POSIX_C_SOURCE\ >=\ 200112L || _XOPEN_SOURCE\ >=\ 600)
-.fi
-.TP 4
-Before glibc 2.12:
-_SVID_SOURCE || _XOPEN_SOURCE\ >=\ 500 ||
-_XOPEN_SOURCE\ &&\ _XOPEN_SOURCE_EXTENDED
-.PD
-.RE
-.ad b
-.SH DESCRIPTION
-The
-.BR ecvt ()
-function converts \fInumber\fP to a null-terminated
-string of \fIndigits\fP digits (where \fIndigits\fP is reduced to a
-system-specific limit determined by the precision of a
-.IR double ),
-and returns a pointer to the string.
-The high-order digit is nonzero, unless
-.I number
-is zero.
-The low order digit is rounded.
-The string itself does not contain a decimal point; however,
-the position of the decimal point relative to the start of the string
-is stored in \fI*decpt\fP.
-A negative value for \fI*decpt\fP means that
-the decimal point is to the left of the start of the string.
-If the sign of
-\fInumber\fP is negative, \fI*sign\fP is set to a nonzero value,
-otherwise it is set to 0.
-If
-.I number
-is zero, it is unspecified whether \fI*decpt\fP is 0 or 1.
-.PP
-The
-.BR fcvt ()
-function is identical to
-.BR ecvt (),
-except that
-\fIndigits\fP specifies the number of digits after the decimal point.
-.SH RETURN VALUE
-Both the
-.BR ecvt ()
-and
-.BR fcvt ()
-functions return a pointer to a
-static string containing the ASCII representation of \fInumber\fP.
-The static string is overwritten by each call to
-.BR ecvt ()
-or
-.BR fcvt ().
-.SH ATTRIBUTES
-.SS Multithreading (see pthreads(7))
-The
-.BR ecvt ()
-and
-.BR fcvt ()
-functions are not thread-safe.
-.SH CONFORMING TO
-SVr2;
-marked as LEGACY in POSIX.1-2001.
-POSIX.1-2008 removes the specifications of
-.BR ecvt ()
-and
-.BR fcvt (),
-recommending the use of
-.BR sprintf (3)
-instead (though
-.BR snprintf (3)
-may be preferable).
-.SH NOTES
-.\" Linux libc4 and libc5 specified the type of
-.\" .I ndigits
-.\" as
-.\" .IR size_t .
-Not all locales use a point as the radix character ("decimal point").
-.SH SEE ALSO
-.BR ecvt_r (3),
-.BR gcvt (3),
-.BR qecvt (3),
-.BR setlocale (3),
-.BR sprintf (3)
-.SH COLOPHON
-This page is part of release 3.79 of the Linux
-.I man-pages
-project.
-A description of the project,
-information about reporting bugs,
-and the latest version of this page,
-can be found at
-\%http://www.kernel.org/doc/man\-pages/.
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