1.\" Copyright (c) 2007 Eric Anderson <anderson@FreeBSD.org> 2.\" Copyright (c) 2007 Pawel Jakub Dawidek <pjd@FreeBSD.org> 3.\" All rights reserved. 4.\" 5.\" Redistribution and use in source and binary forms, with or without 6.\" modification, are permitted provided that the following conditions 7.\" are met: 8.\" 1. Redistributions of source code must retain the above copyright 9.\" notice, this list of conditions and the following disclaimer. 10.\" 2. Redistributions in binary form must reproduce the above copyright 11.\" notice, this list of conditions and the following disclaimer in the 12.\" documentation and/or other materials provided with the distribution. 13.\" 14.\" THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND 15.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE 18.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24.\" SUCH DAMAGE. 25.\" 26.\" $FreeBSD$ 27.\" 28.Dd April 16, 2007 29.Dt EXPAND_NUMBER 3 30.Os 31.Sh NAME 32.Nm expand_number 33.Nd format a number from human readable form 34.Sh LIBRARY 35.Lb libutil 36.Sh SYNOPSIS 37.In libutil.h 38.Ft int 39.Fo expand_number 40.Fa "const char *buf" "int64_t *num" 41.Fc 42.Sh DESCRIPTION 43The 44.Fn expand_number 45function unformats the 46.Fa buf 47string and stores a signed 64-bit quantity at address pointed out by the 48.Fa num 49argument. 50.Pp 51The 52.Fn expand_number 53function 54follows the SI power of two convention. 55.Pp 56The prefixes are: 57.Bl -column "Prefix" "Description" "1000000000000000000" -offset indent 58.It Sy "Prefix" Ta Sy "Description" Ta Sy "Multiplier" 59.It Li k Ta No kilo Ta 1024 60.It Li M Ta No mega Ta 1048576 61.It Li G Ta No giga Ta 1073741824 62.It Li T Ta No tera Ta 1099511627776 63.It Li P Ta No peta Ta 1125899906842624 64.It Li E Ta No exa Ta 1152921504606846976 65.El 66.Sh RETURN VALUES 67.Rv -std 68.Sh ERRORS 69The 70.Fn expand_number 71function will fail if: 72.Bl -tag -width Er 73.It Bq Er EINVAL 74The given string contains no digits. 75.It Bq Er EINVAL 76An unrecognized prefix was given. 77.It Bq Er ERANGE 78Result doesn't fit into 64 bits. 79.El 80.Sh SEE ALSO 81.Xr humanize_number 3 82.Sh HISTORY 83The 84.Fn expand_number 85function first appeared in 86.Fx 6.3 . 87