1*eb7c1594Sagc.\" $NetBSD: atof.3,v 1.9 2003/08/07 16:43:38 agc Exp $ 26dda330eSthorpej.\" 35f8a6c06Sperry.\" Copyright (c) 1991, 1993 45f8a6c06Sperry.\" The Regents of the University of California. All rights reserved. 561f28255Scgd.\" 661f28255Scgd.\" This code is derived from software contributed to Berkeley by 761f28255Scgd.\" the American National Standards Committee X3, on Information 861f28255Scgd.\" Processing Systems. 961f28255Scgd.\" 1061f28255Scgd.\" Redistribution and use in source and binary forms, with or without 1161f28255Scgd.\" modification, are permitted provided that the following conditions 1261f28255Scgd.\" are met: 1361f28255Scgd.\" 1. Redistributions of source code must retain the above copyright 1461f28255Scgd.\" notice, this list of conditions and the following disclaimer. 1561f28255Scgd.\" 2. Redistributions in binary form must reproduce the above copyright 1661f28255Scgd.\" notice, this list of conditions and the following disclaimer in the 1761f28255Scgd.\" documentation and/or other materials provided with the distribution. 18*eb7c1594Sagc.\" 3. Neither the name of the University nor the names of its contributors 1961f28255Scgd.\" may be used to endorse or promote products derived from this software 2061f28255Scgd.\" without specific prior written permission. 2161f28255Scgd.\" 2261f28255Scgd.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 2361f28255Scgd.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 2461f28255Scgd.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 2561f28255Scgd.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 2661f28255Scgd.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 2761f28255Scgd.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 2861f28255Scgd.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 2961f28255Scgd.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 3061f28255Scgd.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 3161f28255Scgd.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 3261f28255Scgd.\" SUCH DAMAGE. 3361f28255Scgd.\" 345f8a6c06Sperry.\" from: @(#)atof.3 8.1 (Berkeley) 6/4/93 3561f28255Scgd.\" 365f8a6c06Sperry.Dd June 4, 1993 3761f28255Scgd.Dt ATOF 3 3861f28255Scgd.Os 3961f28255Scgd.Sh NAME 4061f28255Scgd.Nm atof 4161f28255Scgd.Nd convert 4261f28255Scgd.Tn ASCII 4361f28255Scgdstring to double 44312aca53Sperry.Sh LIBRARY 45312aca53Sperry.Lb libc 4661f28255Scgd.Sh SYNOPSIS 47472351e1Swiz.In stdlib.h 4861f28255Scgd.Ft double 4961f28255Scgd.Fn atof "const char *nptr" 5061f28255Scgd.Sh DESCRIPTION 5161f28255ScgdThe 5261f28255Scgd.Fn atof 5361f28255Scgdfunction converts the initial portion of the string pointed to by 5461f28255Scgd.Ar nptr 5561f28255Scgdto 5661f28255Scgd.Ar double 5761f28255Scgdrepresentation. 5861f28255Scgd.Pp 5961f28255ScgdIt is equivalent to: 6061f28255Scgd.Bd -literal -offset indent 6161f28255Scgdstrtod(nptr, (char **)NULL); 6261f28255Scgd.Ed 6361f28255Scgd.Sh SEE ALSO 6461f28255Scgd.Xr atoi 3 , 6561f28255Scgd.Xr atol 3 , 6661f28255Scgd.Xr strtod 3 , 6761f28255Scgd.Xr strtol 3 , 6861f28255Scgd.Xr strtoul 3 6961f28255Scgd.Sh STANDARDS 7061f28255ScgdThe 7161f28255Scgd.Fn atof 7261f28255Scgdfunction conforms to 7361f28255Scgd.St -ansiC . 74