This patch imports the unmodified current version of NetBSD libc. The NetBSD includes are in /nbsd_include, while the libc code itself is split between lib/nbsd_libc and common/lib/libc.
150 lines
3.9 KiB
Groff
150 lines
3.9 KiB
Groff
.\" $NetBSD: strsuftoll.3,v 1.11 2010/12/14 13:00:34 jruoho Exp $
|
|
.\"
|
|
.\" Copyright (c) 2002,2007 The NetBSD Foundation, Inc.
|
|
.\" All rights reserved.
|
|
.\"
|
|
.\" This code is derived from software contributed to The NetBSD Foundation
|
|
.\" by Luke Mewburn.
|
|
.\"
|
|
.\" Redistribution and use in source and binary forms, with or without
|
|
.\" modification, are permitted provided that the following conditions
|
|
.\" are met:
|
|
.\" 1. Redistributions of source code must retain the above copyright
|
|
.\" notice, this list of conditions and the following disclaimer.
|
|
.\" 2. Redistributions in binary form must reproduce the above copyright
|
|
.\" notice, this list of conditions and the following disclaimer in the
|
|
.\" documentation and/or other materials provided with the distribution.
|
|
.\"
|
|
.\" THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
|
|
.\" ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
|
|
.\" TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
|
|
.\" PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
|
|
.\" BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
|
|
.\" CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
|
|
.\" SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
|
.\" INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
|
|
.\" CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
|
.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
|
.\" POSSIBILITY OF SUCH DAMAGE.
|
|
.\"
|
|
.Dd December 14, 2010
|
|
.Dt STRSUFTOLL 3
|
|
.Os
|
|
.Sh NAME
|
|
.Nm strsuftoll ,
|
|
.Nm strsuftollx
|
|
.Nd "convert a string to a long long, with suffix parsing"
|
|
.Sh LIBRARY
|
|
.Lb libc
|
|
.Sh SYNOPSIS
|
|
.In stdlib.h
|
|
.Ft long long
|
|
.Fn strsuftoll "const char *desc" "const char *val" "long long min" "long long max"
|
|
.Ft long long
|
|
.Fn strsuftollx "const char *desc" "const char *val" "long long min" "long long max" "char *errbuf" "size_t errbuflen"
|
|
.Sh DESCRIPTION
|
|
The functions
|
|
.Fn strsuftoll
|
|
and
|
|
.Fn strsuftollx
|
|
convert
|
|
.Fa val
|
|
into a number of type
|
|
.Vt long long ,
|
|
checking that the result is not smaller than
|
|
.Fa min
|
|
or larger than
|
|
.Fa max .
|
|
Two or more decimal numbers may be separated by an
|
|
.Dq x
|
|
to indicate a product.
|
|
.Pp
|
|
Each decimal number may have one of the following optional suffixes:
|
|
.Pp
|
|
.Bl -tag -width 3n -offset indent -compact
|
|
.It Em b
|
|
Block; multiply by 512
|
|
.It Em k
|
|
Kibi; multiply by 1024 (1 KiB)
|
|
.It Em m
|
|
Mebi; multiply by 1048576 (1 MiB)
|
|
.It Em g
|
|
Gibi; multiply by 1073741824 (1 GiB)
|
|
.It Em t
|
|
Tebi; multiply by 1099511627776 (1 TiB)
|
|
.It Em w
|
|
Word; multiply by the number of bytes in an integer
|
|
.El
|
|
.Pp
|
|
In the case of an error (range overflow or an invalid number),
|
|
.Fn strsuftollx
|
|
places an error message into
|
|
.Fa errbuf
|
|
(which is
|
|
.Fa errbuflen
|
|
bytes long) and returns 0,
|
|
and
|
|
.Fn strsuftoll
|
|
displays that error and terminates the process.
|
|
The parameter
|
|
.Fa desc
|
|
is used to construct
|
|
.Fa errbuf .
|
|
.Pp
|
|
Neither
|
|
.Fa desc
|
|
nor
|
|
.Fa val
|
|
may be
|
|
.Dv NULL .
|
|
.Sh RETURN VALUES
|
|
The functions
|
|
.Fn strsuftoll
|
|
and
|
|
.Fn strsuftollx
|
|
return either the result of the conversion,
|
|
unless the value overflows or is not a number;
|
|
in the latter case,
|
|
.Fn strsuftoll
|
|
displays an error message and terminates the process with exit code
|
|
.Dv EXIT_FAILURE ,
|
|
and
|
|
.Fn strsuftollx
|
|
returns with 0 and
|
|
.Fa errbuf
|
|
contains a non-empty error message.
|
|
.Sh ERRORS
|
|
.Bl -tag -width Er
|
|
.It Bq Er ERANGE
|
|
The given string was out of range; the value converted has been clamped.
|
|
.El
|
|
.Sh SEE ALSO
|
|
.Xr errx 3 ,
|
|
.Xr strtoll 3 ,
|
|
.Xr orders 7
|
|
.Sh BUGS
|
|
At least few limitations should be mentioned:
|
|
.Bl -bullet
|
|
.It
|
|
Both functions ignore the current locale.
|
|
.It
|
|
Neither
|
|
.Fn strsuftoll
|
|
nor
|
|
.Fn strsuftollx
|
|
fail gracefully in case of invalid,
|
|
.Dv NULL ,
|
|
pointers.
|
|
.It
|
|
Arguably the return type should be
|
|
.Vt intmax_t
|
|
instead of
|
|
.Vt long long .
|
|
.It
|
|
The
|
|
.Fn strsuftollx
|
|
function is prone to buffer overflows if used incorrectly.
|
|
Arguably only
|
|
.Fn strsuftoll
|
|
should be exposed to a caller.
|
|
.El
|